Top Banner
Information System Description (SYD) SURPASS hiX 5200 V1.1 A50010-X3-A1-6-7618
46
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Page 1: HiX5200

Information

System Description (SYD)

SURPASS hiX 5200 V1.1

A50010-X3-A1-6-7618

Page 2: HiX5200

SURPASS hiX 5200 V1.1 Information System Description (SYD)

2 A50010-X3-A1-6-7618

The information in this document is subject to change without notice and describes only the product defined in the introduction of this documentation. This documentation is intended for the use of Nokia Siemens Networks customers only for the purposes of the agreement under which the document is submitted, and no part of it may be used, reproduced, modified or transmitted in any form or means without the prior written permission of Nokia Siemens Networks. The documentation has been prepared to be used by professional and properly trained personnel, and the customer assumes full responsibility when using it. Nokia Siemens Networks welcomes customer comments as part of the process of continuous development and improvement of the documentation.

The information or statements given in this documentation concerning the suitability, capacity, or performance of the mentioned hardware or software products are given "as is" and all liability arising in connection with such hardware or software products shall be defined conclusively and finally in a separate agreement between Nokia Siemens Networks and the customer. However, Nokia Siemens Networks has made all reasonable efforts to ensure that the instructions contained in the document are adequate and free of material errors and omissions. Nokia Siemens Networks will, if deemed necessary by Nokia Siemens Networks, explain issues which may not be covered by the document. Nokia Siemens Networks will correct errors in this documentation as soon as possible. IN NO EVENT WILL NOKIA SIEMENS NETWORKS BE LIABLE FOR ERRORS IN THIS DOCUMEN-TATION OR FOR ANY DAMAGES, INCLUDING BUT NOT LIMITED TO SPECIAL, DIRECT, INDIRECT, INCIDENTAL OR CONSEQUENTIAL OR ANY LOSSES, SUCH AS BUT NOT LIMITED TO LOSS OF PROFIT, REVENUE, BUSINESS INTERRUPTION, BUSINESS OPPORTUNITY OR DATA,THAT MAY ARISE FROM THE USE OF THIS DOCUMENT OR THE INFORMATION IN IT. This documentation and the product it describes are considered protected by copyrights and other intellectual property rights according to the applicable laws. The wave logo is a trademark of Nokia Siemens Networks Oy. Nokia is a registered trademark of Nokia Corporation. Siemens is a registered trademark of Siemens AG. Other product names mentioned in this document may be trademarks of their respective owners, and they are mentioned for identification purposes only. Copyright © Nokia Siemens Networks 2009. All rights reserved.

Tf T Important Notice on Product Safety Elevated voltages are inevitably present at specific points in this electrical equipment. Some of the parts may also have elevated operating temperatures.

Non-observance of these conditions and the safety instructions can result in personal injury or in property damage.

Therefore, only trained and qualified personnel may install and maintain the system.

The system complies with the standard EN 60950 / IEC 60950. All equipment connected has to comply with the applicable safety standards.

The same text in German:

Wichtiger Hinweis zur Produktsicherheit

In elektrischen Anlagen stehen zwangsläufig bestimmte Teile der Geräte unter Spannung. Einige Teile können auch eine hohe Betriebstemperatur aufweisen.

Eine Nichtbeachtung dieser Situation und der Warnungshinweise kann zu Körperverletzungen und Sachschäden führen.

Deshalb wird vorausgesetzt, dass nur geschultes und qualifiziertes Personal die Anlagen installiert und wartet.

Das System entspricht den Anforderungen der EN 60950 / IEC 60950. Angeschlossene Geräte müssen die zutreffenden Sicherheitsbestimmungen erfüllen.

Page 3: HiX5200

Information SURPASS hiX 5200 V1.1System Description (SYD)

A50010-X3-A1-6-7618 3

Reason for Update

Summary:

Details:

Chapter/Section Reason for Update

all Rebranding

Product Overview LU_POTS64_E, PM_B_E: new product number

Issue history

Issue

Number

Date of Issue Reason for Update

1 11/2003 First edition

2 03/2004 1P

stP update

3 05/2004 2P

ndP update

4 07/2004 3P

rdP update

5 07/2005 4P

thP update

6 02/2009 5P

thP update

Page 4: HiX5200

SURPASS hiX 5200 V1.1 Information System Description (SYD)

4 A50010-X3-A1-6-7618

This document consists of a total of 46 pages. All pages are issue 4.

Contents

1 Introduction .................................................................................................8 1.1 SURPASS Next Generation Access.............................................................8 1.2 SURPASS hiX Product Family.....................................................................8 1.3 Conventions ................................................................................................9 1.4 Main Features .............................................................................................9

2 Applications and Benefits...........................................................................10

3 System Architecture Overview ...................................................................11 3.1 General Aspects........................................................................................11 3.2 Shelf Architecture ......................................................................................11 3.3 System Architecture...................................................................................12

4 Feature Description ...................................................................................13 4.1 PSTN Features..........................................................................................13 4.1.1 POTS ........................................................................................................13 4.1.2 ISDN BRA .................................................................................................13 4.1.3 V5.2 Interface............................................................................................14 4.2 Operation & Maintenance ..........................................................................15 4.2.1 Performance Management.........................................................................15 4.2.2 Software Upgrade......................................................................................16 4.3 Redundancy ..............................................................................................16 4.4 Power Supply and Grounding ....................................................................17 4.5 Subscriber Line Testing for POTS and ISDN..............................................17 4.5.1 Subscriber Line Testing Overview..............................................................17 4.5.2 Maintenance Mode Overview.....................................................................18 4.5.3 Integrated Line Test Function ....................................................................19 4.5.4 Integrated Line Test for ISDN Lines via one POTS Channel.......................19 4.6 Lightning and Overvoltage Protection.........................................................20

5 System Hardware Modules ........................................................................21 5.1 TDM Star...................................................................................................21 5.2 Central Controller Units..............................................................................21 5.2.1 Central Switching Units CXU_T_E1 ...........................................................21 5.2.2 Extension Unit EXU_T ...............................................................................22 5.3 Line Units for PSTN Services.....................................................................23 5.3.1 Line Unit LU_POTS64 ...............................................................................23 5.3.2 Line Unit LU_ISDN32 ................................................................................25 5.4 Power Modules..........................................................................................28 5.4.1 Power Module PM_A.................................................................................28 5.4.2 Power Module PM_B.................................................................................28 5.5 Test Access Point Distributor TAP_D.........................................................29 5.6 Diode Module ............................................................................................29

6 Physical Design.........................................................................................30 6.1 System Shelves.........................................................................................30 6.1.1 Main Shelf .................................................................................................30

Page 5: HiX5200

Information SURPASS hiX 5200 V1.1System Description (SYD)

A50010-X3-A1-6-7618 5

6.1.2 Extension Shelf..........................................................................................31 6.2 Racks for Indoor Operation........................................................................32

7 Network Element Management System......................................................33 7.1 Features ....................................................................................................33 7.2 Hardware and Software Platform ...............................................................34 7.3 Graphical User Interface ............................................................................35 7.3.1 AccessIntegrator Main Window..................................................................35 7.3.2 Alarm Management ...................................................................................36 7.3.3 Security .....................................................................................................36 7.3.4 Interfaces ..................................................................................................36 7.3.5 Profile Management...................................................................................37 7.3.6 Additional Management Tools....................................................................37

8 Technical Data...........................................................................................38 8.1 System Parameters ...................................................................................38 8.1.1 Environmental Conditions and Standards...................................................38 8.1.2 Equipment Practice....................................................................................38 8.1.3 Narrowband Uplink Interface......................................................................39 8.1.4 Shelf Extension Interfaces .........................................................................39 8.1.5 Shelf Internal Interfaces .............................................................................39 8.1.6 Other System Interfaces ............................................................................39 8.1.7 Synchronization .........................................................................................39 8.1.8 Redundancy ..............................................................................................39 8.2 Parameters of External Interfaces..............................................................40 8.2.1 E1 Interface...............................................................................................40 8.2.2 POTS Interface..........................................................................................40 8.2.2.1 VF Parameter ............................................................................................40 8.2.2.2 Line Parameter ..........................................................................................41 8.2.2.3 Signaling Parameter ..................................................................................41 8.2.3 ISDN (2B1Q) Interface...............................................................................42 8.2.4 ISDN (4B3T) Interface ...............................................................................42 8.2.5 T3 Interface ...............................................................................................43 8.2.6 TMN Interface............................................................................................43

9 Product Overview ......................................................................................44

10 Abbreviation ..............................................................................................45

Page 6: HiX5200

SURPASS hiX 5200 V1.1 Information System Description (SYD)

6 A50010-X3-A1-6-7618

Illustrations TUFig. 1 SURPASS hiX 5200 for the Provisioning of Traditional Telephony Services UT ....10 TUFig. 2 Main Shelf ViewUT ..............................................................................................11 TUFig. 3 Extension Shelf ViewUT ......................................................................................12 TUFig. 4 SURPASS hiX 5200 with Main and Extension Shelves for V5.2UT.......................12 TUFig. 5 Line Test Functions OverviewUT .........................................................................18 TUFig. 6 Line Test for ISDN Line with one POTS Channel via Shelf Test BusUT................19 TUFig. 7 LU_POTS64 in the SURPASS hiX 5200UT .........................................................23 TUFig. 8 LU_ISDN32 in the SURPASS hiX 5200UT...........................................................26 TUFig. 9 Shelf hiX52S and Module Options used as Main Shelf UT ....................................30 TUFig. 10 Shelf hiX52S and Module Options used as Extension Shelf UT...........................31 TUFig. 11 SURPASS hiX 5200 ETSI Racks (Example)UT..................................................32 TUFig. 12 Architecture of AccessIntegratorUT ...................................................................33 TUFig. 13 AccessIntegrator Graphical User InterfaceUT ....................................................35

Page 7: HiX5200

Information SURPASS hiX 5200 V1.1System Description (SYD)

A50010-X3-A1-6-7618 7

Tables TUTab. 1 Physical Layer Performance Monitoring ParametersUT ..................................... 15 TUTab. 2 BORSCHT Function of LU_POTS64UT ............................................................. 24 TUTab. 3 Slots of the hiX52S Used as Main ShelfUT ........................................................ 31 TUTab. 4 Slots of the hiX52S Used as Extension ShelfUT ................................................ 32 TUTab. 5 F Max. Loop Resistance I>18 mAUT ................................................................. 41 TUTab. 6 Max. Loop Resistance I>23 mAUT .................................................................... 41

Page 8: HiX5200

SURPASS hiX 5200 V1.1 Information System Description (SYD)

8 A50010-X3-A1-6-7618

1 Introduction

1.1 SURPASS Next Generation Access Operators around the world currently face the challenges of offering a complete service portfolio to their customers. They are continuously introducing new revenue generating services – especially in the area of broadband access - and realize that they have to transform their voice-optimized network into a multiservice IP network, supporting real-time applications, e-commerce solutions, multimedia and mobility services.

Access technologies must offer cost-effective solutions to address these challenges. While traditionally multiple access technologies have been used to effectively address different market and customer segments, the demand is there to handle all required services by means of one single, universal access platform. Next Generation access thus asserts the operator’s claim to attain a single platform that supports any service irrespective whether it is video, voice or data.

SURPASS next generation access solutions give operators the flexibility to deploy, replace or expand access equipment with both traditional multi-vendor ATM/TDM networks and any multi-vendor next generation network. SURPASS next generation access solutions can be effectively combined with existing narrowband and broadband gear thus offering a clear and painless migration path to the next generation, “all-IP” network of the future. These solutions protect the operator’s access investment and allow him to migrate the backbone as the core part of the network at any time, whenever it makes economic sense.

SURPASS next generation access solutions comprise SURPASS evolving voice access for voice services and SURPASS DSL broadband access.

1.2 SURPASS hiX Product Family SURPASS hiX is the next generation access platform for the delivery of voice, video and broadband data services. Based on a common modular architecture, the SURPASS hiX product family provides a complete range of modular end-to-end solutions that give network operators the flexibility to offer any service in today’s and tomorrow’s networks. The SURPASS hiX product family comprises two products:

SURPASS hiX 5200 is optimized for connecting subscribers to the existing TDM PSTN or next generation core network. On the subscriber side it provides high-density POTS and ISDN voice interfaces. On the network side towards the backbone, the open, standardized V5.2 interface is used, which offers concentration of voice bearer channels and thus guarantees optimum utilization of bandwidth.

SURPASS hiX 5300 is the perfect solution to fulfill all kinds of bandwidth demands. The SURPASS hiX 5300 DSLAM reduces CAPEX by bringing all types of DSL technologies, whether ADSL, SHDSL or VDSL, onto a single platform. Thanks to its variety of SDH and Ethernet feeder interfaces it fits seamlessly into existing ATM and IP networks. Deployment is optimized through best-in-class port density, comprehensive attachment options and full scalability.

Page 9: HiX5200

Information SURPASS hiX 5200 V1.1System Description (SYD)

A50010-X3-A1-6-7618 9

1.3 Conventions The current system description gives a general overview of the setup and function of the SURPASS hiX Version 1.1 product family for the ETSI market. Furthermore the system description gives a complete product overview with all of its components for the SURPASS hiX 5200 V1.1 product.

In the following description SURPASS hiX is used as short name for the two products SURPASS hiX 5200 and SURPASS hiX 5300 of the SURPASS hiX product family.

The extension _E, for ETSI, in the names of shelves and plug-in units is only used in chapter X9X XProduct OverviewX of this description.

1.4 Main Features

Main Shelf and Extension Shelf Concept with Front Access

One shelf may be equipped for example with:

Up to 1024 POTS ports or Up to 512 ISDN ports

Service Interfaces

POTS (64 ports per line unit) ISDN-BRI (32 ports per line unit)

Network Interfaces

Voice: n x E1/V5.2

Redundancy

1+1 redundancy for control, uplink and power supply

Deployment Options

Open rack for central locations

Page 10: HiX5200

SURPASS hiX 5200 V1.1 Information System Description (SYD)

10 A50010-X3-A1-6-7618

2 Applications and Benefits Traditional Narrowband Services

SURPASS evolving voice access is our access network solution for voice only scenarios. With SURPASS evolving voice access the operator’s valuable voice services are migrated to a state of the art and future proof architectural base. This application addresses incumbent carriers who want to replace overaged line frames as well as CLEC green-field scenarios where new carriers want to address the valuable voice market without any existing infrastructure.

Availability of services such as POTS, ISDN as well as V5.2 interfaces is important in guaranteeing the major revenue stream. A solution designed to deliver feature-optimized voice access services is therefore key in ensuring successful operation.

The SURPASS hiX 5200 enables native voice services (analog a/b and ISDN) to be deployed at very high port densities. It supports full class 5 features managed by any vendor’s control platforms via open protocols that are either TDM-based (V5.2) or IP-based (H.248/MEGACO) in the future. The network interface is open standards based (V5.2), and thus can provide interoperability with any V5.2 enabled voice switch.

SURPASS hiX 5200

POTS

ISDN-BRI

V5.2

Any Switch

Local ExchangeManagement SystemAccessIntegrator

SURPASS hiX 5200

POTS

ISDN-BRI

V5.2

Any Switch

Local ExchangeManagement SystemAccessIntegrator

Fig. 1 SURPASS hiX 5200 for the Provisioning of Traditional Telephony Services

Page 11: HiX5200

Information SURPASS hiX 5200 V1.1System Description (SYD)

A50010-X3-A1-6-7618 11

3 System Architecture Overview

3.1 General Aspects The SURPASS hiX 5200 is a single platform which uses common components to support:

All types of service Interoperability with all standard network types and protocols: PSTN (V5.2) Changing traffic requirements for the fast introduction of new services Pay-as-you-grow traffic scenarios using extension shelves and cascading options

Additionally, this flexible system architecture allows for the implementation of future technology developments. The advanced network management system AccessIntegrator (ACI) which supports the SURPASS hiX includes mass operation tools and multiple hierarchies to enable management capabilities at all network levels.

3.2 Shelf Architecture The SURPASS hiX 5200 uses a modular physical design with multiple shelves that form an access node. The architecture supports large deployments through a multiple shelf concept, consisting of main shelves and several local extension shelves, each being controlled by the main shelf with one single central processor unit for the whole system. The interconnection of main shelf and its associated extension shelves is realized through bus extension adapter cables.

Each main shelf, see XFig. 2X, consists of central switching unit (CXU or CXU_T_E1) slots for control and sixteen universal slots that can be equipped with line units (LU) and subscriber units (SU) to provide subscriber services such as POTS, ISDN, ADSL, SHDSL and VDSL. Two out of these sixteen slots can optionally be equipped with the central voice unit CVU to support migration towards a VoIP access gateway. The CVU is a part of its successor version SURPASS hiX V1.2.

1

Main shelf

LU LU

PM

_AP

M_B

2 3 4 5 6 7 9 12 13 14 15 16 17 18 19

20

10

Fan tray

CXU

_T_E

1

LU LU LU

LU

LU

LU LU

LU

LU LU LU LU

8

LU

11

LU

CXU

_T_E

1

Fig. 2 Main Shelf View

Page 12: HiX5200

SURPASS hiX 5200 V1.1 Information System Description (SYD)

12 A50010-X3-A1-6-7618

The extension shelves, see XFig. 3X, are designed for the support of voice line units (POTS, ISDN). Sixteen slots can be equipped with line units while the remaining two slots are prepared for the so-called extension units EXU_T to handle the control from the main shelf. A chain of up to four extension shelves may be connected to one main shelf. The interconnection between main shelf and extension shelves is via redundant TDM links using direct electrical cabling between the central switching units CXU_T_E1 in the main shelf and the EXU_T in the first extension shelf.

1

Extension shelf

LU LU LU LU LU LU LU

EXU

_T

LU LU LU LU LU LU LU

PM_A

PM_B

2 3 4 5 6 7 8 9 12 13 14 15 16 17 18 19

20EX

U_T

10 11

Fan tray

LU LU

Fig. 3 Extension Shelf View

All electrical and optical connectors are designed for front access thus eliminating the need for separate connection panels and at the same time increasing the port density.

3.3 System Architecture In XFig. 4X the classical system architecture of the SURPASS hiX 5200 is shown, providing POTS and ISDN ports with open V5.2 interface towards the PSTN network. The option of cascading up to four extension shelves with one main shelf provides a very cost effective solution for large, central office based deployments of telephony services.

V5.2

SURPASS hiX 5200

Main shelf hiX52S

LU_I

SDN

32 …

CXU

_T_E

1

Extension shelves hiX52S

LU_P

OTS

64

Extension shelf hiX52S

EXU

_T…

LU_I

SDN

32

LU_P

OTS

64

LU_I

SDN

32

LU_P

OTS

64

LU_I

SDN

32

LU_P

OTS

64

Fig. 4 SURPASS hiX 5200 with Main and Extension Shelves for V5.2

Page 13: HiX5200

Information SURPASS hiX 5200 V1.1System Description (SYD)

A50010-X3-A1-6-7618 13

4 Feature Description

4.1 PSTN Features

4.1.1 POTS LU_POTS64 is a plug-in unit, which provides the narrowband POTS service on twisted-pair copper drop wires.

The interface characteristic allows connections to analog telephony equipment like

Normal telephone (POTS) Fax Answering machine Analog modem

VF parameters for POTS meet the recommendation ITU Q.552. The parameters are programmable by software in order to adopt to project or country specific parameters.

All characteristics of the BORSCHT function are supported:

Subscriber loop feeding 18 mA/1800 Overvoltage and power contact protection Balanced ringing with ring tripping at zero crossing High impedance line supervision in power down state Loop start function Ground start function Dial pulse detection and MFC dialing Injection of charging pulses 12 kHz/16 kHz Hard and silent reversal Encoding and decoding of the VF signal (A- or -law) Programmable hybrid characteristics and impedances Programmable VF levels Subscriber line testing

Eight interfaces per LU are able to support coin boxes with dedicated feeding characteristic.

The a/b interfaces are directly connected via the front access connector to MDF.

One line interface can be configured to the internal system test bus to measure the outward line parameters of the LU_ISDN32 (channel No. 64).

4.1.2 ISDN BRA The line unit LU_ISDN32 variants provide the ISDN Basic Rate Access (ISDN BRA) service by using twisted-pair copper drop wires. The line unit LU_ISDN322 offers 32 UBk0B interfaces with line code 2B1Q and the LU_ISDN324 offers 32 UBk0B interfaces with line code 4B3T. Each interface can be connected to a NTBA and works together with digital CPE interfaces like ISDN telephones, small branch exchanges for SB0 B bus, terminal adapters or digital modems.

The UBk0B interface of the LU is able to feed the remote NTBA in normal or emergency condition.

Page 14: HiX5200

SURPASS hiX 5200 V1.1 Information System Description (SYD)

14 A50010-X3-A1-6-7618

Regenerator feeding is supported from four ports (I < 45 mA).

The following functions are supported:

Standard UBk0B interface with line code 2B1Q or 4B3T Adaptive echo cancellation Overvoltage and power contact protection Test bus access for outward subscriber line testing HDLC D-channel data 16 kbit/s Quick test (remote feeding off/on, loop2 with looped B-channel bit pattern) Supervision of the quality of service (RDS errors) Maintenance functions:

– BER measurement – Loop 1 and loop 2 – Transmission of single pulses – Forced line activation – Support of EOC (2B1Q)

4.1.3 V5.2 Interface SURPASS hiX 5200 supports V5.2 interfaces to local exchange connections for narrowband call processing. The bearer and the call control of the subscribers connected to the narrowband line units LU_POTS64 and LU_ISDN32 will be transmitted via V5.2 interfaces to the local exchange (LE).

The V5.2 interface is characterized by:

Support of V5.2 1P

stP and 2P

ndP edition according ITU-T

Support of POTS and ISDN-BRA subscribers Support of up to four V5.2 interfaces using up to 16 E1 links total (V5.2S-interface

with eight E1 links for inter-working with Nokia Siemens Networks EWSD and V5.2 interface with 16 E1 are possible)

Support of E1 transmission via G.703/704 interface Support of up to 5120 subscribers (the maximum number of supported ISDN

subscribers is 2048) Support of V5.2-profiling for customer project specific adaptations

The V5 core has the following functionality:

Termination of the different data links for control, BCC, link control, PSTN and protection protocols

A frame relay function to relay the ISDN D-channel frames System management to control the processing of the different state machines in

case of start-up of the V5 interface, of failure, of protection switching V5 resource management to control the timeslot interchanger in order to cross

connect the timeslots at the LE side with the subscriber side ports via the TDM back plane. V5.2 BCC protocol controlled by the local exchange will perform the timeslot allocation.

Termination of the layer 3 for all protocols, which are transported via a data link

The 16 physical E1 interfaces used for the V5.2 interfaces are distributed between both redundant central switching units. In case of loss of one central switching unit the number of available links is reduced to eight, because the mechanical connections of the E1 links are divided on two plug-in units.

Page 15: HiX5200

Information SURPASS hiX 5200 V1.1System Description (SYD)

A50010-X3-A1-6-7618 15

4.2 Operation & Maintenance

4.2.1 Performance Management Performance management (PM) within SURPASS hiX 5200 covers performance monitoring (PMo) and protocol monitoring (PrM) on physical layer.

Performance Monitoring

PMo on physical layer is supported for feeder interfaces in receive direction and for E1. The supported PMo counters can be seen in XTab. 1X below.

E1

Error seconds x

Severely error seconds x

Unavailable seconds x

Background block errors x

SYN error seconds x

AIS error seconds x

LOS error seconds x

ICP violations x

Tab. 1 Physical Layer Performance Monitoring Parameters

Protocol Monitoring

Within PrM on physical layer (drop area) Header Error Control (HEC) violations and the number of cells discarded because of that are counted.

PrM is performed by the CXU_T_E1 in the V5 layer. Following parameters are supported for a V5.2 interface:

Number of successful allocations/de-allocations Number of rejected allocations/de-allocations Max. number of allocated time slots (total/percentage) Min./max. number of available time slots Overload time allocated time slots Unavailable time of V5 interface Unavailable time of link Number of received/transmitted HDLC frames (layer 2) on c-channel Number of detected data link failures (layer 2) Number of received frames with wrong layer 3 address Min. number of unblocked subscribers

For V5 the parameters are calculated by the SW each 15 minutes and 24 hours. The CXU_T_E1 supports to store V5 PrM data up to 96 entries for 15 minutes records and four records for 24 hours records. The PMo can be switched on for every V5.2 interface on CXU_T_E1.

Page 16: HiX5200

SURPASS hiX 5200 V1.1 Information System Description (SYD)

16 A50010-X3-A1-6-7618

4.2.2 Software Upgrade Within SURPASS hiX 5200 SW upgrades are performed with minimized service interruption regarding user traffic. This can be reached by separating the software upgrade into two steps:

Download of the relevant module(s) to the intended unit(s) – not service affecting Activation of the new load(s) – service affecting

The first step of the SW upgrade is possible during normal operation, because the download phase is performed in background without service or traffic interruption. New SW is downloaded via the internal connections towards the SURPASS hiX 5200-internal and SURPASS hiX 5500-internal peripheral units (PUs).

In SURPASS hiX 5200 redundancy for the CXU_T_E1 and the EXU_T is provided. In case of SW upgrade of the CXU_T_E1 this means that the new SW is downloaded to both CXU_T_E1. Afterwards the standby CXU_T_E1 is activated and when the internal procedures have been finished it takes over the traffic. This swap takes less than 50 ms and is not service affecting. The activation phase for the line and subscriber units is service-affecting with respect to the user connections. At the end, the new SW is also activated on the former active CXU_T_E1.

Both actions – download and activation - are separately requested by the TMN OS. Within the TMN OS requests, it can be differentiated whether only one specific unit or all units of a specific type or the complete system are to be upgraded.

4.3 Redundancy SURPASS hiX 5500 supports redundancy for all central switching units. The purpose is to improve the line-down-time of all subscriber interfaces and to reduce operation & maintenance costs of the system (deferred maintenance).

Line redundancy is supported for STM-1 optical interfaces to improve the system availability in case of fiber breaks.

Switchover processes for plug-in unit redundancy are partly independent. A plug-in unit switchover causes a line switchover, only if the active line was located on the plug-in unit, which became un-operational. A plug-in unit switchover caused by an operator command will not cause a line switchover. Therefore it is quite possible that the active line is served by the standby unit and vice versa.

All plug-in units have two power supply inputs. So a real redundant power supply distribution are realized.

According to the applied principles, the plug-in unit redundancy control is based on a work split between HW and SW.

The HW control part implements following functions:

Selector control for narrowband subscriber interfaces on line units, relay control for system interfaces on the plug-in unit PM_B and control of redundancy state dependent board internal HW components (so as E1 Matrix, synchronization block) via CXU_T_E1/EXU_T active signal

Support of both redundant (dual CXU_T_E1/EXU_T) as non-redundant (single CXU_T_E1/EXU_T) equipping

HW active/standby pre-decision during plug-in unit start up by considering presence and operational state of the mate plug-in unit and CXU_T_E1/EXU_T position in the default working/protection slot

Page 17: HiX5200

Information SURPASS hiX 5200 V1.1System Description (SYD)

A50010-X3-A1-6-7618 17

Watchdog function for plug-in unit processor operation Redundancy state switching even in the case of a power supply or plug-in unit

controller failure on the local plug-in unit to mate plug-in unit activity

4.4 Power Supply and Grounding All plug-in units in SURPASS hiX 5200 shelves are operated with –40.5 VDC to –72 VDC power according to ETS 300 132-2. A normal work of all plug-in units is possible in an extended voltage range from –38 VDC to –75 VDC.

The power supply is connected to the main EMC filter and overvoltage protection on the power modules PM_A and PM_B via 3W3 SubD connectors located on the power modules.

The positive pole of the power supply voltage is used as the GND potential on the backplane. The negative pole is distributed as MUP1 (from PM_A) and MUP2 (from PM_B).

The SURPASS hiX 5200 uses ETSI principles for the ground distribution:

Free protective ground is connected to the rack. There are conductive connections between rack and shelf as well as between shelf and front panels.

The supply voltage feed is floating. The connection of the positive pole with ground is required outside of the shelf. Filters in the DC input guarantee EMC protection.

The signal ground GND has only a capacitive connection to GND_S. GND is connected to the positive pole of the supply voltage.

4.5 Subscriber Line Testing for POTS and ISDN The test functions for line units consists of subscriber line testing and maintenance mode. For line units in normal operation the Subscriber Line Testing (SLT) can measure a variety of line parameters like resistor R and capacitor C and can check the circuit functionality of POTS line units. The maintenance mode is helpful to support installation staff.

4.5.1 Subscriber Line Testing Overview A Subscriber Line Testing (SLT) feature is implemented as an Integrated Line Test Function (ILTF) in the SURPASS hiX.

The SLT supports the line testing (outward) and circuit testing (inward) for 2-wire services POTS and the line testing (outward) for 2-wire services ISDN. For POTS and ISDN services a wiring test is applied with test tone insertion to the selected line. An exhaustive CPE test for POTS service is implemented. The very successful test class of operation is the ILTF, which is part of POTS line unit. No external test equipment necessary because of using ILTF. This ILTF feature is implemented in the SW for LU_POTS64. A dedicated port of one LU_POTS64 (TPP) provides line testing (outward) on demand for the LU_ISDN32.

The special feature Periodic Access Test (PAT) in the line unit LU_POTS64 works like a “watch dog” of each subscriber line. About every five minutes a quick check is running if the POTS line is in idle state. If there is a fault a supervisor will promptly be informed via ACI.

Page 18: HiX5200

SURPASS hiX 5200 V1.1 Information System Description (SYD)

18 A50010-X3-A1-6-7618

4.5.2 Maintenance Mode Overview For installation of services the maintenance mode is implemented. This function is subdivided in outward test and interface test. The outward test includes simply test of telephone set (CPE) of the customers and check of wiring with craft support. Wiring test can be done by tone insertion to a dedicated line. By means of a headset or with tone detection the craft person can detect the line at distribution frames etc. The interface test includes switching of different loops and especially for ISDN service forced activation of ISDN port, single pulse sending and BER test. For further interface tests additional test equipment is necessary for measurement.

Integrated Line Test Function (ILTF)

Automatic Test

Periodic Access Test Periodic Access Test (PAT) for each POTS channel

on board • function capability test

Automatic Line Automatic Line Measurement for each POTS channel

on board • extensive measurement

Normal Normal Measurement for each POTS channel

on board for ISDN via shelf test bus • on IDLE and BLOCKED

Forced Forced Measurement for each POTS channel

on board for ISDN

via shelf test bus • on IDLE and BLOCKED and BUSY

Subscriber Line Testing (SLT)

Line Access

TAP

Maintenance Mode

Outward Test Interface Test

CPE Wiring

for ISDN outward

Test on Demand

for each POTS on board

• feeding • metering • terminal test

for each POTS channel on board

for ISDN via shelf test bus

• test tone insertion

for POTS channel • loop at CODEC for ISDN channel • loop 1,2 • forced activation • single pulse sending • BER measurement

Test Functions

Fig. 5 Line Test Functions Overview

Page 19: HiX5200

Information SURPASS hiX 5200 V1.1System Description (SYD)

A50010-X3-A1-6-7618 19

4.5.3 Integrated Line Test Function The Integrated Line Test Function (ILTF) has a sufficient accuracy and is able to find out failures of a line or a circuit. The automatic line measurement is intended for testing idle or blocked lines once a day, week, fortnight or month.

In addition the Periodic Access Test (PAT) recognizes early limit violations and generates an operator information. This is a “watch dog” feature that searches the subscriber line network and circuits for serious faults every five minutes around the clock in the idle state.

4.5.4 Integrated Line Test for ISDN Lines via one POTS Channel The ISDN line can be measured with a SLIC from a POTS line unit. For this test one normal POTS channel (TPP) is reserved only for the ISDN line test function and is connected to the internal shelf test bus. One line unit with POTS service with a reserved test channel is necessary per shelf. The Test Access Point (TAP) for measurement equipments is connected to the internal shelf test bus.

MDF

LU_ISDN32LU_POTS64

SLIC

CXU-TEXU-T

TDM Link

TBA

TBA

SLIC SLIC AFE

Feeding -95V

TPP

Shelf Test Bus TAP

A

select port Start test Display result

Shelf 1

MT

A D

istr

ibu

tion

Fie

ld

wire

Shelf n

Fig. 6 Line Test for ISDN Line with one POTS Channel via Shelf Test Bus

Page 20: HiX5200

SURPASS hiX 5200 V1.1 Information System Description (SYD)

20 A50010-X3-A1-6-7618

4.6 Lightning and Overvoltage Protection The SURPASS hiX system contains a common lightning and overvoltage protection mechanism. This mechanism consists of a chain of protection elements:

The secondary protection with 2-steps gas-discharge protectors is located in the line side main distribution frame. The fine protection and protection against power contact is located on board.

The primary protection is protected by the customer.

Page 21: HiX5200

Information SURPASS hiX 5200 V1.1System Description (SYD)

A50010-X3-A1-6-7618 21

5 System Hardware Modules

5.1 TDM Star Point-to-point connections are implemented between the central switching unit CXU_T_E1 and each line unit in the main shelf and between the CXU_T_E1 in the main shelf and the extension units EXU_T in the extension shelves. The same physical star structure is used inside the extension shelves. The total bit rate is 49 Mbit/s.

5.2 Central Controller Units

5.2.1 Central Switching Units CXU_T_E1 The CXU_T_E1 acts as the central controller for all system modules of the SURPASS hiX 5200 and is used in the main shelf only. It handles operation and maintenance tasks of the complete system including up to four extension shelves. The CXU_T_E1 also provides the V5.2 interface towards the telephony switch. Eight E1 links per CXU_T_E1 are available to support up to four V5.2 interfaces.

The following functions are performed by the CXU_T_E1:

Central Shelf Controller

The CXU_T_E1 controller block consists of the controller itself including RAM and flash memory, a real time clock (RTC) circuit and an Ethernet PHY for management access.

The controller block performs:

Central controller function for all subscriber units in the main shelf and for all line units in the main shelf and (if present) in all extension shelves

Communication to the LCT (outband communication over the Ethernet interface) and to the TMN OS

Internal communication to all line units and extension unit EXU_T over the TDM star message channel

Central SW maintenance (including SW download) for all plug-in units in the main shelf and (if present) in the extension shelves

Central HW maintenance (including remote inventory) for all plug-in units in the main shelf and (if present) in the extension shelves

Initialization and configuration of all network element components Reset generation for all plug-in units of the main shelf Protection switching control for line and plug-in unit redundancy Call processing for POTS and ISDN Relaying and monitoring of D-channel messages Collection of performance monitoring data

Page 22: HiX5200

SURPASS hiX 5200 V1.1 Information System Description (SYD)

22 A50010-X3-A1-6-7618

Narrowband Part

The CXU_T_E1 narrowband part performs the physical and frame termination of the E1 links, the HW related functions of V5.2 processing and the TDM star interface to narrowband line units. It consists of following components:

E1 line interface circuit (optional equipped for application in central locations) For operation in central locations, the CXU_T_E1 provides the physical termination for 8 x E1 symmetrical links with impedance of 120 . The line interface consists of overvoltage protection, impedance matching components and magnetic.

E1 framer The CXU provides E1 framing functions (i.e. frame alignment, elastic store, timeslot 0 insertion resp. evaluation and removal) for 8 E1 links.

TDM star interface Transmission of TDM payload and management data between the CXU_T_E1 and narrowband line units.

Eight E1 ports are supported. From the switch side, the signal come to the line interface circuit. Then follow the matrix and the framer. The framer has connection to the TDM interface module. The TDM interface module processes the data to the backplane and to the CXU_T_E1 microcontroller. All ways are bi-directional.

Clocking Part

The clocking part consists of the synchronization unit.

Power Supply

The power supply units generate the board internal voltages for circuit operation from the redundant 48 V battery voltage. The power supply supports a redundant power feeding of the E1 matrix and the line interface circuits.

5.2.2 Extension Unit EXU_T The extension unit EXU_T is the central card in extension shelves for telephony services. This module supports POTS and ISDN line units and also comprises the interfaces to additional extension shelves, thus allowing additional shelf connections in a daisy-chaining manner.

The following functions are done by the EXU_T:

Up- and downlink communication to the CXU_T_E1 and EXU_T Up- and downlink supervision Redundancy management software states I P

2PC management of the EXU_T and the shelf

Shelf address management with the CXU_T_E1 I P

2PC product identification data read from the LU

I P

2PC shelf address distribution

Links to the line units Buffer manager LU reset handling Deliver active and standby link check information to the CXU_T_E1 Clock recovery

Page 23: HiX5200

Information SURPASS hiX 5200 V1.1System Description (SYD)

A50010-X3-A1-6-7618 23

5.3 Line Units for PSTN Services

5.3.1 Line Unit LU_POTS64 LU_POTS64 is a line unit, which provides the narrowband POTS service on twisted-pair copper drop wires.

The following functions are performed by the LU_POTS64:

The line unit LU_POTS64 feeds per interface analog CPE like normal telephone, fax, answering machine or analog modem

All requirements of voice parameters for POTS meet the recommendation ITU Q.552

The parameters of line interface are programmable and support project specific SW versions

The line unit LU_POTS64 provides the BORSCHT function One channel of the line interface (channel No. 64) is able to measure the outward

line parameters of the LU_ISDN32 via test bus

LU_POTS64 is physically connected towards the system with the TDM interfaces A or B. The line unit can be plugged in into any plug-in unit slot with TDM interface, see XFig. 7X.

Fig. 7 LU_POTS64 in the SURPASS hiX 5200

LU_POTS64

LU_ISDN32 TDM star(A+B)

Uk0

CXU_T_E1 a/b V5.2 (E1)

Main shelf hiX52S

PCM channelAddress channelMessage channel

ooo

PCM c lock 49152MHz

Extension shelf

LU_POTS64

LU_ISDN32 TDM star(A+B)

Extension shelf hiX52S

Uk0

EXU_T a/b

Internal TDM link

PCM channelAddress channelMessage channel

ooo

PCM c lock 49152 MHz

Page 24: HiX5200

SURPASS hiX 5200 V1.1 Information System Description (SYD)

24 A50010-X3-A1-6-7618

The a/b interface is available via the front access connector to MDF.

Inventory data are readable from the CXU_T_E1/EXU_T via IP

2PC bus.

General characteristics of the LU_POTS64:

Number of interfaces The line unit LU_POTS64 provides 64 POTS interfaces. Subscriber port 64 can be used as test probe port (TPP) to measure any selected line (outward measurement) of LU_ISDN32 in the same shelf via shelf test bus access. The subscriber interface is not able to provide POTS service when it is configured as TPP.

Put into operation LU_POTS64 can be hot inserted and pulled out. Other units will never be disturbed by handling with subscriber units. The line unit can be plugged in into any narrowband plug-in unit slot.

Lightning and overvoltage protection LU_POTS64 is protected against destruction through lightning, overvoltage or power contact.

Overtemperature protection Line interface circuits

The line unit meets the BORSCHT function:

Battery - Constant current feeding with programmable current values

- Loop open

Overvoltage - LU_POTS64 is protected against overvoltage like power contact and lightning surge

Ringing - Balanced ringing with selectable frequencies

- Ring tripping at zero crossing of ringing voltage

Signaling - High-impedance line supervision in power down state

- Loop start function (supervision of DC loop)

- Ground start function (supervision of earth connection)

- Dial pulse detection

- Metering pulse injection (12 kHz/16 kHz)

- Hard/silent reversal

Coding - Encoding/decoding speech signals acc. to A-law or -law

Hybrid - Programmable line balancing

- Programmable relative transmit and receive levels

- Programmable 2-wire impedance

Testing - Ground fault

- Integrated Line Test Function (ILTF)

Tab. 2 BORSCHT Function of LU_POTS64

LU_POTS64 is able to feed a loop resistance of maximum 1800 with the loop current of < 18 mA by a nominal battery voltage of –48 V/ 60 V. Eight fixed ports are able to feed coin telephones with a feeding current of 33 mA. In this case, the maximal loop resistance is about 1000 by a nominal battery voltage of –48 V. The VF parameters fulfill the ITU-T recommendation Q.552.

Page 25: HiX5200

Information SURPASS hiX 5200 V1.1System Description (SYD)

A50010-X3-A1-6-7618 25

Test bus access for only one POTS interface (port No. 64) is provided in order to perform the outward test on demand for the subscriber lines of LU_ISDN32. TBA is realized with two relays to switch over the subscriber line to the test bus and discharge the capacitor of a connected NTBA and the line capacity.

Controller and interface module The controller is the central part of the LU and provides the following main functions: – Two independent interfaces via TDM star to the central units with PCM and

address channel and message channel – Termination of the V5.2 PSTN protocol and call processing – Control of line measuring and self-test procedures

Power distribution module to generate and supervise all internal voltages

LU_POTS64 has a typical basic power consumption of 9.0 W. Each busy port takes additional 1.57 W in the average, each ringing port additional 1.04 W.

The typical power dissipation is 9.0 W plus 0.94 W per busy port.

5.3.2 Line Unit LU_ISDN32 The line unit LU_ISDN32 variants are classified according to their line code:

LU_ISDN322 for 2B1Q or LU_ISDN324 for 4B3T

LU_ISDN32 is a line unit, which provides the narrowband ISDN service on twisted-pair copper drop wires.

The following functions are performed by the LU_ISDN32:

The line unit LU_ISDN322 offers 32 ISDN UBk0B-interfaces with line code 2B1Q. The line unit LU_ISDN324 offers 32 ISDN UBk0B-interfaces with line code 4B3T. Every interface can be connected with a NTBA and works together with digital

CPE interfaces like ISDN telephones, little branch exchanges with SB0 B bus interface, terminal adapters or digital modems.

LU_ISDN32 is able to feed remote one NTBA in normal or emergency conditions per line.

LU_ISDN32 is physically connected with the TDM interfaces A and/or B to the system. The line unit can be plugged in into any plug-in unit slot with TDM interface, see XFig. 8X.

Page 26: HiX5200

SURPASS hiX 5200 V1.1 Information System Description (SYD)

26 A50010-X3-A1-6-7618

Fig. 8 LU_ISDN32 in the SURPASS hiX 5200

The front access connector provides the UBk0B interface access to MDF.

Inventory data are readable via IP

2PC bus from CXU_T_E1 and line unit host controller.

General characteristics of the LU_ISDN32:

Number of interfaces The line unit LU_ISDN32 provides 32 ISDN BRA interfaces. Each subscriber pair wires (outward connection) is able to switch over to the test bus. Simultaneous only one twisted pair wires can be switched on to the test bus.

Put into operation LU_ISDN32 can be hot inserted and pulled out. Other units will never be disturbed by handling with subscriber units. The line unit can be plugged in into any narrowband plug-in unit slot.

Lightning and Overvoltage protection LU_ISDN32 is protected against destruction through lightning, overvoltage or power contact.

Overtemperature protection

LU_ISDN32

LU_POTS64 TDM star(A+B)

Uk0CXU_T_E1

a/b

V5.2 (E1)

Main shelf hiX52S

clock, frame

PCM channelAddress channelMessage channel

ooo

S0

NTBA NTBA

LU_ISDN32

LU_POTS64 TDM star(A+B)

Extension shelf hiX52S

Uk0EXU_T

a/b

Internal TDM link

PCM channelAddress channelMessage channel

ooo

S0

NTBA NTBA PCM clock 49152 MHz

Page 27: HiX5200

Information SURPASS hiX 5200 V1.1System Description (SYD)

A50010-X3-A1-6-7618 27

Controller and interface module The controller is the central part of the LU and provides the following main functions: – Control and supervision of the narrowband ISDN line interface circuits – Control and supervision of the remote feeding control circuits – Termination of the V5.2 port control protocol – Control of ISDN layer 1 – Temperature supervision and control of the indicator LEDs on the board – Control of self-test procedures and test bus access

ISDN line interface module – The module provides ISDN interfaces via 2-wire transceiver inclusive of

adaptive echo cancellation, in coupling of remote power feeding into the wires and protection against overvoltage and lightning. For outward subscriber line tests, it is possible to connect each subscriber wire pair with the test bus by relay switching.

– The remote feeding control supervises the remote power feeding process. Each subscriber line is fed by a central DC/DC-converter and the feeding current is supervised and limited. If a threshold for the feeding current ( 45 mA) is violated for about 1.5 s the remote power feeding will be switched off for 22 s to 30 s. After this time the remote power feeding is switched on again. The line feeding is resistant to short cuts. Overtemperature protection per channel is integrated on chip.

Test bus access (TBA) Test bus connecting on demand for each line interface for outward measuring. One connection to the test bus is allowed in a shelf at the time.

The power distribution module generates and supervises all internal voltages.

Each ISDN port is able to feed one NTBA with 1.1 W in normal feeding (acc. to TS102080).

LU_ISDN32 has a typical basic power consumption of 11.1 W. Each active port takes additional 0.96 W for normal NTBA operation or 1.81 W for emergency NTBA operation in the average. The typical power dissipation is 11.1 W plus 0.35 W (normal NTBA operation) or 0.5 W (emergency NTBA operation) per active port.

Page 28: HiX5200

SURPASS hiX 5200 V1.1 Information System Description (SYD)

28 A50010-X3-A1-6-7618

5.4 Power Modules Each shelf accommodates two power modules PM_A and PM_B for shelf-central functions.

5.4.1 Power Module PM_A The following main functions are performed by the PM_A:

Power supply interface with central EMC filter and reverse-connect protection

Generator for auxiliary ringing voltage for the ringing generator of the LU_POTS64. The output level of the generated positive DC voltage depends of the level of the input station voltage. The generator is supervised on overvoltage and over current.

Front access for T3 interface with switchable termination resistance for synchronizing of the CXU_T_E1

Test access point Via the front access connector the test busses of the shelves can be connected to a test access point distributor TAP_D.

LED alarm signaling to indicate faults and operating states

5.4.2 Power Module PM_B The module PM_B has the following functions:

Power supply interface with central EMC filter and reverse-connect protection for the second primary voltage

Fan control with alarming, temperature measurement, fan failure detection and fan voltage control

Front access for 10/100BaseT-Ethernet interface for TMN Front access for alarm input interface to collect three (variant –A1) or seven

(variant –B1) external alarms LED alarm signaling to indicate faults and operating states

Page 29: HiX5200

Information SURPASS hiX 5200 V1.1System Description (SYD)

A50010-X3-A1-6-7618 29

5.5 Test Access Point Distributor TAP_D The test access point distributor TAP_D is located in the terminal panel at the top of the rack. The TAP_D is only necessary if extension shelves are used.

The TAP RJ45 connector on power modules PM_A in the main shelf and in the extension shelves must be connected with the corresponding RJ45 connector on the TAP_D.

External, customer-specific test equipment (for example, an ISDN telephone) can be connected to the RJ45 connector “TAP” on TAP_D.

5.6 Diode Module The diode module is located in the terminal panel at the top of the rack.

The diode module is only necessary for power redundancy. Two direct voltages (UBa1 B and UBb2 B) are combined in the diode module via diodes. This prevents a mutual influence from occurring between the two direct voltage sources.

Page 30: HiX5200

SURPASS hiX 5200 V1.1 Information System Description (SYD)

30 A50010-X3-A1-6-7618

6 Physical Design

6.1 System Shelves The system SURPASS hiX 5200 is housed in the narrowband shelf hiX52S:

The system consists of at least one shelf hiX52S:

One main shelf hiX52S (must always be included) Maximum of four extension shelves hiX52S (optional)

The narrowband shelf hiX52S has 20 slots, 18 slots with normal (full) size for central controller units (CXU_T_E1 and EXU_T) and line units (LU) and two slots (half size) for the power modules (PM_A, PM_B) for DC-filtering, ringing voltage and power connector access. Slot 9 and 20 are dedicated to the central switching unit CXU_T_E1 and the extension unit EXU_T.

6.1.1 Main Shelf The shelf hiX52S only contains the TDM backplane, so the shelf supports a narrowband system and contains the system modules, which can be equipped according to the services and interfaces required.

XFig. 9X shows the shelf hiX52S used as main shelf in the SURPASS hiX 5200 and XTab. 3X show the module equipping options.

Fan Tray

119

LU_P

OTS

64/L

U_I

SDN

322

LU_P

OTS

64/L

U_I

SDN

322

LU_P

OTS

64/L

U_I

SDN

322

LU_P

OTS

64/L

U_I

SDN

322

LU_P

OTS

64/L

U_I

SDN

322

LU_P

OTS

64/L

U_I

SDN

322

LU_P

OTS

64/L

U_I

SDN

322

LU_P

OTS

64/L

U_I

SDN

322

CXU

_T_E

!

CX

U_T

_E1

LU_P

OTS

64/L

U_I

SDN

322

LU_P

OTS

64/L

U_I

SDN

322

LU_P

OTS

64/L

U_I

SDN

322

LU_P

OTS

64/L

U_I

SDN

322

LU_P

OTS

64/L

U_I

SDN

322

LU_P

OTS

64/L

U_I

SDN

322

LU_P

OTS

64/L

U_I

SDN

322

LU_P

OTS

64/L

U_I

SDN

322

101

Fan Tray102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 120

LU LU LU LU LU LU LU LU

CX

U_T

_E1

CX

U_T

_E1

LU LU LU LU LU LU LU LU

PM

_APM

_B

Fig. 9 Shelf hiX52S and Module Options used as Main Shelf

Page 31: HiX5200

Information SURPASS hiX 5200 V1.1System Description (SYD)

A50010-X3-A1-6-7618 31

Slot

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

Unit

CXU_T_E1 x x

LU_POTS64 x x x x x x x x x x x x x x x x

LU_ISDN322 x x x x x x x x x x x x x x x x

LU_ISDN324 x x x x x x x x x x x x x x x x

PM_A x

PM_B x

Tab. 3 Slots of the hiX52S Used as Main Shelf

6.1.2 Extension Shelf The shelf hiX52S used as extension shelf, see XFig. 10X, can be used together with the main shelf hiX52S for voice service expansion and feature the same mechanical dimensions as the main shelf. Up to 4 extension shelves may be used in one system. The interconnection between main shelf and extension shelves is realized via redundant TDM links using direct electrical cabling between CXU_T_E1 and EXU_T.

The spacing between the full size slots is 25 mm and 35 mm for half size slots, respectively.

Fan Tray

116

119

LU_P

OTS

64/L

U_I

SDN

322

LU_P

OTS

64/L

U_I

SDN

322

LU_P

OTS

64/L

U_I

SDN

322

LU_P

OTS

64/L

U_I

SDN

322

LU_P

OTS

64/L

U_I

SDN

322

LU_P

OTS

64/L

U_I

SDN

322

LU_P

OTS

64/L

U_I

SDN

322

LU_P

OTS

64/L

U_I

SDN

322

CXU

_T_E

!

CX

U_T

_E1

LU_P

OTS

64/L

U_I

SDN

322

LU_P

OTS

64/L

U_I

SDN

322

LU_P

OTS

64/L

U_I

SDN

322

LU_P

OTS

64/L

U_I

SDN

322

LU_P

OTS

64/L

U_I

SDN

322

LU_P

OTS

64/L

U_I

SDN

322

LU_P

OTS

64/L

U_I

SDN

322

LU_P

OTS

64/L

U_I

SDN

322

101

Fan Tray102 103 104 105 106 107 108 109 110 111 112 113 114 115 117 118 120

LU LU LU LU LU LU LU LU

EXU

_T

EXU

_T

LU LU LU LU LU LU LU LU

PM

_APM

_B

Fig. 10 Shelf hiX52S and Module Options used as Extension Shelf

X

XTab. 4X shows the equipping possibilities for individual units.

Page 32: HiX5200

SURPASS hiX 5200 V1.1 Information System Description (SYD)

32 A50010-X3-A1-6-7618

Slot

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

Unit

EXU_T x x

LU_POTS64 x x x x x x x x x x x x x x x x

LU_ISDN322 x x x x x x x x x x x x x x x x

LU_ISDN324 x x x x x x x x x x x x x x x x

PM_A x

PM_B x

Tab. 4 Slots of the hiX52S Used as Extension Shelf

6.2 Racks for Indoor Operation SURPASS hiX 5200 is designed for indoor operation in central office or collocation rooms with controlled environmental conditions (ETS 300 019-1-3). The shelves are mounted in 2200 600 300 mm ETSI racks (H W D).

Normally the hiX52S is used in open racks without rack door. If a closed rack is used, the hiX52S fits in the 300 mm deep ETSI rack with a modified rack door.

The hiX52S main shelf can be installed in an ETSI rack together with one hiX52S extension shelf. Every rack with a hiX52S main shelf requires a terminal panel with a fuse panel that is mounted at the top of the rack. If the hiX52S main shelf is used in a closed rack, baffle must be mounted above the main shelf in the middle of the rack.

An additional rack can be used with up to three hiX52S extension shelves.

SURPASS h iX S SURPASS hiX

hiX52S extension shelf

SURPASS hiX

Fuse and Terminal panel

hiX52S main shelf

hiX52S extension shelf

hiX52S extension shelf

hiX52S extension shelf

Baffle

Fig. 11 SURPASS hiX 5200 ETSI Racks (Example)

Page 33: HiX5200

Information SURPASS hiX 5200 V1.1System Description (SYD)

A50010-X3-A1-6-7618 33

7 Network Element Management System The AccessIntegrator (ACI) is the network management solution designed to manage a complete access network, including the SURPASS hiX product family and many other Nokia Siemens Networks access products.

ACI is a highly modular and scalable system. The components for management of the SURPASS hiX product family are: ACI Element Managers (EM) for the different NE types, e.g. EM hiX for the SURPASS hiX network elements.

ACI Cross Domain Manager (CDM), the central component of the ACI Element Management System (EMS). In the ACI EMS there is a set of EM integrated under a CDM.

Generic EM providing a more pragmatic way for integration of new network elements (LCT integration).

LCT for operation, administration and maintenance (OAM) tasks on NE site

XFig. 12X shows the system structure of the whole ACI solution.

ACI Cross Domain Manager CDM

EM XL EM AMGW

ACINetwork Manager

TDM

Dom

ain

Man

agem

ent

Laye

r

Elem

ent

Man

agem

ent

Laye

r

Net

wor

kM

anag

emen

tLa

yer

DM(Fastlink

EM)

EM Generic

EM MSAPEM hiX EM

ONU-S EM XP EM ULAF Va

lue-

adde

d ap

plic

atio

ns

CORBA/SNMP

CORBA/SNMP

Advanced Provisioning Manager

e.g. ASCII/RPC, XML

OSS/BSS

Mediation Layer

External Management System

Fig. 12 Architecture of AccessIntegrator

7.1 Features The ACI offers a wide variety of comfortable management functions for the FCAPS functional areas of network element management acc. to the ITU-T M.3010 standard:

Security administration Configuration management including SW management and inventory data

retrieval Alarm surveillance, line test and equipment test Retrieval of quality data

Page 34: HiX5200

SURPASS hiX 5200 V1.1 Information System Description (SYD)

34 A50010-X3-A1-6-7618

Additionally functions are offered to ensure an easy and safe operation of the management system, like

Data surveillance and recovery SW Management Automatic consistency checks of the database Time-scheduled execution of the management tasks Export of data Logging of system events

The value added applications are optional features, offering functions like northbound interfaces (TMF CORBA, SNMP) or NE access control.

The intuitive user interface is based on the graphical representation of the network and the equipment within the network, which displays all information up-to-date to the user. A network map shows the network topology and the states of network elements. It is possible to subsume network elements to sub-networks, depending on the overall size of the network and geographical locations. The equipment view delivers information on the configuration and current states of the subracks and network elements. The user interface is optimized to finish given tasks by only a few mouse clicks.

7.2 Hardware and Software Platform ACI runs on standard Intel-based PCs as well as on Unix workstations and servers. High availability solutions can be provided on demand in several steps starting from redundant hard disk approach up to a hot-standby server cluster solution.

The SW platform provides the following features:

Developed on the most advanced SW techniques (e.g. C++, Java, CORBA) and based on a future proof system architecture and on communication principles guaranteeing a high performance

Running on Windows® 2000 and higher and Solaris The database guarantees data persistency. This saves the time necessary for

requesting the complete information from the NE and enables a quick start-up after an ACI shut down.

Client-server architecture, which allows the distribution of ACI work places Multi-user: several users can work in parallel on the data

The layered multi-client multi-server concept of ACI offers a highly scalable management solution. It can grow from a stand-alone PC-solution for small networks to multi-server solutions for very large networks.

On the other hand the user of the ACI management system doesn’t have to know the structure of the management system. The user can connect from any place with one client to any node.

Page 35: HiX5200

Information SURPASS hiX 5200 V1.1System Description (SYD)

A50010-X3-A1-6-7618 35

7.3 Graphical User Interface ACI provides an intuitive and task-oriented graphical user interface to access its features and applications. ACI uses the well established building blocks for user interface design like menus, windows, forms, buttons, scrollable lists and was developed in accordance with the Microsoft® user interface style guide offering the same “Look and Feel”.

7.3.1 AccessIntegrator Main Window

Fig. 13 AccessIntegrator Graphical User Interface

ACI’s main window is opened automatically at start-up time and will only be closed at log-out time. This main window is the central window with menu-bar, toolbar and status bar. Further windows with icons, various views, dialog boxes, etc. are opened either via the menu or via double click on an object, for which these operations are defined. All objects (e.g. sub networks, network elements, etc.), which are displayed in the views, provide a context pop-up menu, which offers the most important functions available for this object.

Access to the functionality via the menu-bar or by pop-menus is context-sensitive; i.e. the user can only call those functions that are available under the current context.

ACI offers a comfortable equipment view of SURPASS hiX NE showing the shelf with the plug-in units and their states.

Page 36: HiX5200

SURPASS hiX 5200 V1.1 Information System Description (SYD)

36 A50010-X3-A1-6-7618

7.3.2 Alarm Management The Alarm management is a key functionality of every management system. The user must be sure, that the alarm status shown in the management client is really the same as in the managed network. In addition, the occurrence of high alarm loads must be handled without any problems.

Beside these key features the following features are implemented:

Secure synchronization mechanism for alarm log, alarm list, alarm status list, alarm counter and media interface

High performance and functionality of the alarm log A global alarm list presents all active alarms The log record structure as described in ITU-T X.733 and X.735 User-friendly and high performance filter and sorting mechanism in alarm list and

alarm log Structured naming for alarms (based on ITU-T) necessary for user-friendly filtering

and easier interpretation of alarms

7.3.3 Security The security policy of the ACI system captures 3 mechanisms:

User identification and authentication: Login to ACI is identical to the OS login. The user group(s) of the user determines the access rights within ACI, see next points.

Access rights to network elements: Access to NE, as a whole can be enabled/disabled. That works by grouping the NE into domains and assigning them to user groups. By default the global domain capturing all NE is assigned.

Execution permissions: To user groups execution rights for ACI functions are assigned. That assignment is corresponding to the menu structure of ACI. If access rights to network elements are used the execution rights are individual to user groups and NE domains.

The platforms like Microsoft® Windows® 2000 Server operating system deliver an integrated set of tools and services that lets administrators implement security within the enterprise or protect the privacy of inter-company communications.

7.3.4 Interfaces For time-critical tasks, such as alarm forwarding, on-line interfaces are a prerequisite for management system integration. For less time-critical tasks such as log export or configuration data import, off-line interfaces are the generally preferred solution.

ACI provides standard TMF CORBA interfaces as well as SNMP interfaces to communicate with external systems.

ACI allows exporting a wide variety of data in form of ASCII files. Exportable data include lists, logs, configuration data and inventory data. The export can be initiated manually via the “export” button in the corresponding window and partly on a time-scheduled basis (e.g. lists, logs).

Page 37: HiX5200

Information SURPASS hiX 5200 V1.1System Description (SYD)

A50010-X3-A1-6-7618 37

7.3.5 Profile Management To speed up and facilitate the configuration process for SURPASS hiX, ACI provides a very powerful profile concept. A profile is a set of configuration data, needed to completely configure a specific entity of the SURPASS hiX. Profiles may be created by the operator, named, stored, and assigned to the corresponding entities. In the EM for SURPASS hiX profiles are available for xDSL lines and for traffic parameters.

7.3.6 Additional Management Tools Additionally to the EM, the management system provides a BOOTP server and a FTP server. The BOOTP server is responsible for the assignment of IP addresses to the SURPASS hiX system. The FTP server provides access to configuration files, SW load modules, log files, etc. Both servers may run on the same HW as the EM system, but there is no obligation.

Page 38: HiX5200

SURPASS hiX 5200 V1.1 Information System Description (SYD)

38 A50010-X3-A1-6-7618

8 Technical Data

8.1 System Parameters

8.1.1 Environmental Conditions and Standards Operation Indoor in temperature-controlled locations

EN 300 019-1-3 class 3.1E

Storage Indoor

EN 300 019-1-1 class 3.1E

Transportation EN 300 019-1-2 class 2.3

The plug-in units have to be transported separately.

EMC EN 300 386 DTAG 1TR9 ETS 300 386-1 ES 201 468

Product safety EN 60950-1

Overvoltage and lightning protection ITU-T K.20 ITU-T K.41 EN 60950-1 DTAG 1TR9 (2001-09), revision (2002-06) in ref. to ES 201 468 V1.2.1 (2002-09) TC level 2

Bonding and earthing Indoor

ITU-T K.27

Acoustic noise application limits ETS 300 753

Conformity on E1 interfaces ETSI TBR 12 ETSI TBR 13

All used cables are halogenide-free.

8.1.2 Equipment Practice Number of central switching units per shelf hiX52S as main shelf hiX52S as extension shelf

2 x CXU_T_E1 2 x EXU_T

Number of narrowband line units per main/extension shelf 16

Number of power modules per shelf 1 x PM_A and 1 x PM_B

Number of narrowband extension shelves hiX52S up to 4

Max. number of POTS/ISDN subscriber per shelf 1024/512

Max. number of POTS/ISDN subscriber per NE 5120/ 2048

Page 39: HiX5200

Information SURPASS hiX 5200 V1.1System Description (SYD)

A50010-X3-A1-6-7618 39

8.1.3 Narrowband Uplink Interface Number of E1 links per CXU_T_E1 in a main shelf 8

Number of E1 links per NE in a main shelf 16

Max. number of V5.2 interfaces per NE 4

Number of E1 links belonging to a logical V5.2 interface 2 to 16 (configurable)

E1 interface impedance (E1 interface: with external impedance converter)

120 Ω (sym.) 75 Ω (unbalanced)

8.1.4 Shelf Extension Interfaces Connection to narrowband extension shelves hiX52S EXU_T link (TDM star)

8.1.5 Shelf Internal Interfaces Internal narrowband interface (CXU_T_E1 to narrowband line unit point-to-point connection)

TDM star

Narrowband interface throughput per direction between each CXU_T_E1 and LU

49.152 Mbit/s

8.1.6 Other System Interfaces TMN (outband) 10/100BaseT

connection to LCT

T3in 2-MHz synchronization input

48-V/60-V power supply power supply redundancy

8.1.7 Synchronization NE clock can be derived from external T3in in central shelves

NE clock can be derived from recovered E1 clock (T2, from class5 switch) in central shelves

T1, T2 and T3 clock sources are selected according to a priority list

Switchover to an internal oscillator, if the selected synchronization source is lost

Accuracy of the internal oscillator for SURPASS hiX 5200

< 50 ppm

8.1.8 Redundancy Board redundancy for central switching units CXU_T_E1 and EXU_T Redundant power supply All plug-in units

Page 40: HiX5200

SURPASS hiX 5200 V1.1 Information System Description (SYD)

40 A50010-X3-A1-6-7618

8.2 Parameters of External Interfaces

8.2.1 E1 Interface E1 interfaces are implemented on the central switching unit CXU_T_E1. They are accessible via a DIN 41612 connector (69 pins) on the front panel of the unit. Line rate 2.048 Mbit/s +/-50 ppm Impedance 120 symmetrical Line coding HDB3 Connector type DIN 41612 Standard compliance Electrical Framing

ITU-T G.703 ITU-T G.704

The realization of asymmetric 75 Ω interfaces on the CXU_T_E1 uses external impedance conversion equipment.

8.2.2 POTS Interface POTS interfaces are implemented on the line unit LU_POTS64.

All specifications are related to negative operating voltage of nominal 48 V or 60 V, adjusted metering amplitude of 2 VBeff B and loop current of 25 mA. The majority of parameters are adjustable on specific customer requirements. References ITU-T Q.552

8.2.2.1 VF Parameter Impedance 600 900 220 + (820 II 115 nF)

Balance impedance

600 900 220 + (820 II 115 nF)

Input level (A/D, configurable) 0.0 dBr ( 3.0 dBr to +5.0 dBr, steps 0.5 dB)

Output level (D/A, configurable) 7.0 dBr ( 8.0 dBr to +5.0 dBr, steps 0.5 dB)

The following other areas of level are possible in case of explicite customer requirements:

Input level (A/D, configurable) 3.0 dBr to +10.0 dBr

Output level (D/A, configurable) 10.0 dBr to +3.0 dBr

Page 41: HiX5200

Information SURPASS hiX 5200 V1.1System Description (SYD)

A50010-X3-A1-6-7618 41

8.2.2.2 Line Parameter

43 V 48 V 53 V 60 V 2 VBeffB 1400 1700 1900 2200

Tab. 5 F Max. Loop Resistance I>18 mA

43 V 48 V 53 V 60 V 2 VBeffB 1100 1300 1600 1900

Tab. 6 Max. Loop Resistance I>23 mA Min. leakage resistance (between both wires or one wire and earth)

20 k

8.2.2.3 Signaling Parameter On hook Feeding voltage (typical) 52 V ± 1 V

47 V 59 V

Intrinsic resistance (typical) 2 x 5 kΩ ± 1.5 kΩ Polarity by change of the wires

a /b+ a+/b

Off hook Feeding current 25 mA ± 2 mA Polarity reversal

a /b+ a+/b

Ringing signal Amplitude Frequency Harmonic content DC Offset Intrinsic resistance Impulse duration (V5.1, Type 0) Pause duration (V5.1, Type 0) Ringing disconnection

> 60 VBeffB > 56 VBeffB at UBbat1B = 43 V 25 Hz, 50 Hz < 10 % > 20 V < 200 configurable, steps 10 msconfigurable, steps 10ms < 150 ms

Metering impulses Level on 200 Frequency Harmonic content

2 VBeffB ±0.4 VBeffB 16 kHz, 12 kHz < 6 %

Indication thresholds Loop recognition (typical) Open loop (typical) Hook-flash

10 mA 8 mA configurable, steps 10 ms

Page 42: HiX5200

SURPASS hiX 5200 V1.1 Information System Description (SYD)

42 A50010-X3-A1-6-7618

8.2.3 ISDN (2B1Q) Interface ISDN (2B1Q) interfaces are implemented on the line unit LU_ISDN322. References TS102 080, ETR 080 Line connection 0.4 to 0.8 mm

symmetric. Cu-double wires AWG 22, AWG 24, AWG 26

Transmission reach loop # 2 ... 9 acc. to TS102 080

Permissible line attenuation 36 dB at 40 kHz Source impedance (nominal) 135 Transmit impulse at 135 2.5 V ± 5 % zero to peak

(discrete impulse) Transmission method bit transparently duplex Separation of direction by adaptive echo

cancellation Line coding 2B1Q Data format 72 kBaud

equal to 144 kbit/s (B1, B2, D)

Remote feeding voltage 95 V positive pole grounded

Power feeding 1.1 W power consumption of the NT1 at < 1200 line resistance

Feeding current limited on 55 mA Threshold for switching off 50 mA ± 10 %

1.5 s after exceeding the threshold

Repeat time of switching power feeding on < 30 s

8.2.4 ISDN (4B3T) Interface ISDN (4B3T) interfaces are implemented on the line unit LU_ISDN324. References TS102 080, annex B Line connection 0.4 to 0.8 mm

symmetric. Cu-double wires

Transmission reach loop # 2 ... 9 acc. to TS102 080

Permissible line attenuation 32 dB at 40 kHz Source impedance (nominal) 150 Transmit impulse at 150 2.0 V ± 5 % zero to peak

(discrete impulse) Transmission method bit transparently duplex Separation of direction by adaptive echo

cancellation Line coding 4B3T

Page 43: HiX5200

Information SURPASS hiX 5200 V1.1System Description (SYD)

A50010-X3-A1-6-7618 43

Symbol rate 120 kBaud corresponding 144 kbit/s (B1 + B2 + D)

Remote feeding voltage 95 V positive pole grounded

Power feeding 1.1 W power consumption of the NT1 at < 1200 line resistance

Feeding current limited on 55 mA Threshold for switching off 50 mA ± 10 %

1.5 s after exceeding the threshold

Repeat time of switching power feeding on < 30 s

8.2.5 T3 Interface The T3 interface provides a synchronization input to the CXU_T_E1, which can be selected as synchronization source for the central NE clock.

The CXU_T_E1 can be synchronized with a clock accuracy, which meets the PDH requirements in G.703/13. Electrical conditions acc. ITU-T G.703/13 Clock frequency 2.048 MHz Clock deviation for < 50 ppm Impedance T3 high-impedance Termination 120 balanced

switchable Input jitter tolerance T3 acc. prETS 300 462-5,

Fig. 2 and 3

8.2.6 TMN Interface The TMN interface is a 10/100BaseT-Ethernet interface according to the IEEE 802.3 standard. It supports twisted pair interface media connections through an external isolation transformer.

The cable is a 100- UTP or S-UTP cable of at least category 3 with a maximum length of 100 m. The minimal signal velocity must be more than 0.585 s, the maximum signal delay must be not more than 1000 ns on one link segment.

In addition to the management system a LCT can be connected directly to the SURPASS hiX shelf via this interface.

Page 44: HiX5200

SURPASS hiX 5200 V1.1 Information System Description (SYD)

44 A50010-X3-A1-6-7618

9 Product Overview Note: In the names of shelves and units the extension “_E” stands for ETSI.

Designation Product Number Dimension

in mm W H D

Weightin kg

ONUs

ETSI rack 2.2 m S42023-P336-A1 600 2200 300

Shelves/Modules

hiX52S_E S50028-B1001-A1 500 548 302 11 Blind panel for empty slot C50117-A271-B52 Connecting field for infrastructure rack S42023-P326-A1 Fuse panel S42024-P123-A1 25-A fuse for extension shelf V42278-Z52-A15 Diode module for power redundancy S42023-A910-B65 50 x 192 Test access point distributor TAP_D S50028-B1010-A1 50 x 192 Mounting set for power connection, for main shelf S50028-B1100-R1 1.0 Coax distributor field S42023-A890-A75 Air Baffle C50165-A230-C256 Central Controller Units

CXU_T_E1_E Central switching unit 8 x E1, 120

S50028-Q1001-A1 235 415 21

EXU_T Extension unit

S50028-Q1002-A1 235 415 21

Line, Subscriber and Service Units

LU_POTS64_E POTS line unit

S50028-Q1012-B1

235 415 21

LU_ISDN322_E ISDN line unit UBk0B 2B1Q

S50028-Q1015-A1 235 415 21

LU_ISDN324_E ISDN line unit UBk0B 4B3T

S50028-Q1016-A1 235 415 21

Supplementary Units

PM_A_E Power module type A

S50028-Q1004-A1 235 x 196 x 21

PM_B_E Power module type B, 3 alarm contacts

S50028-Q1005-A1 235 x 196 x 21

PM_B_E Power module type B, 7 alarm contacts

S50028-Q1005-B1

235 x 196 x 21

Page 45: HiX5200

Information SURPASS hiX 5200 V1.1System Description (SYD)

A50010-X3-A1-6-7618 45

10 Abbreviation 2B1Q Two Binary One Quaternary line code 4B3T For Binary Three Temary line code a/b Analogue interface ACI AccessIntegrator ADSL Asymmetric Digital Subscriber Line, standard ITU-T G.992.1

and G.994.1 AIS Alarm Indication Signal ATM Asynchronous Transfer Mode BCC Bearer Channel Control/Connection Protocol BORSCHT Battery, Overvoltage, Ringing, Signaling, Coding, Hybrid,

Testing BRA Basic Rate Access CPE Customer Premises Equipment CXU_T_E1 Central Switching Unit TDM (narrowband service only) DC Direct Current D-channel Data channel DSL Digital Subscriber Line E1 ETSI digital signal level 1 (2.048 Mbit/s) EM Element Manager EMC Electromagnetic Compatibility EMS Element Management System ETSI European Telecommunications Standards Institute EXU_T Extension Unit TDM (for narrowband service only) GND Ground GND_S Ground shelf HDLC High-level Data Link Control HEC Header Error Control hiX52S SURPASS hiX shelf for narrowband service only HW Hardware I P

2PC Inter – Integrated Circuit interface

ILTF Integrated Line Test Function IP Internet Protocol ISDN Integrated Service Digital Network ISDN-BA ISDN Basic Access ISDN-BRI ISDN Basic Rate Interface ITU-T International Telecommunication Union, International

Standardization Sector LCT Local Craft Terminal LE Local Exchange LED Light Emitting Diode LU Line Unit LU_ISDN322 Line Unit for 32 ISDN service, 2B1Q LU_ISDN324 Line Unit for 32 ISDN service, 4B3T LU_POTS64 Line Unit for 64 POTS service MDF Main Distribution Field MSP Multiplex Section Protection MTA Metallic Test Access NE Network Element NT Network Termination NTBA Network Termination Basic Access OAM Operation, Administration and Maintenance

Page 46: HiX5200

SURPASS hiX 5200 V1.1 Information System Description (SYD)

46 A50010-X3-A1-6-7618

OS Operating System PAT Periodic Access Test PC Personal Computer PCM Pulse Code Modulation PHY Physical layer PM Performance Management PM_A Power module A with 48 V/60 V and test access point PM_B Power module B with 48 V/60 V and LED output and

management interface PMo Performance Monitoring POTS Plain Old Telephone Service PrM Protocol Monitoring PSTN Public Switched Telephone Network PU Peripheral Unit RAM Random Access Memory RTC Real Time Clock SHDSL Symmetric High-bitrate Digital Subscriber Line SLT Subscriber Line Testing SNMP Simple Network Management Protocol SURPASS hiX SURPASS product family for access products SURPASS hiX 5200 Narrowband only variant of SURPASS hiX SURPASS hiX 5300 Broadband only variant of SURPASS hiX SW Software TDM Time Division Multiplex TMN Telecommunication Management Network TPP Test Probe Port UBk0B UBk0B interface for ISDN-BRA V5.2 Open access interface using V5.2 protocol VDSL Very high speed Digital Subscriber Line VF Voice Frequency