OptiX Metro 100 Product Description

7/26/2019 OptiX Metro 100 Product Description

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Product Description

OptiX Metro 100 Terminal STM-1 OpticalTransmission System

Issue

Date

HUAWEI TECHNOLOGIES CO., LTD.


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Commercial in Confidence Page 2 of 40

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OptiX Metro 100 Terminal STM-1 Optical Transmission System


Contents

1 Location in the Network Hierarchy ................................................................................ 5

2 Equipment Features ....................................................................................................... 7

2.1 High Integration Design .................................................................................................................... 7

2.2 Low Power Consumption ................................................................................................................. 7

2.3 Easy and Flexible Installation ........................................................................................................... 8

2.4 Multi-Interface Access Capability ..................................................................................................... 8

2.5 Multi-Service Access Capability ....................................................................................................... 8

2.6 Network Level Protection for Multi-Service Signals ......................................................................... 9

2.7 Multiple Management Modes ........................................................................................................... 9

2.8 NM Data Communication with the Third-Party Equipment .............................................................. 9

2.9 Multiple Power Inputs ....................................................................................................................... 9

2.10 Uniform Alarm Management .......................................................................................................... 9

2.11 SSM Management ........................................................................................................................ 10

2.12 Rich Diagnostic Approaches ........................................................................................................ 10

2.13 In-Service Software Upgrade ....................................................................................................... 10

2.14 Easy Operation and Maintenance ................................................................................................ 10

2.14.1 LCD Control Panel ............................................................................................................... 10

2.14.2 Web-LCT .............................................................................................................................. 11

2.14.3 Easy Commissioning ............................................................................................................ 11

3 Equipment Architecture ............................................................................................... 13

3.1 Hardware Architecture .................................................................................................................... 13

3.1.1 Appearance ........................................................................................................................... 13

3.1.2 Configuration Types ............................................................................................................... 14

3.1.3 Front Panel ............................................................................................................................ 14

3.2 System Architecture ....................................................................................................................... 17

3.2.1 Boards ................................................................................................................................... 18

3.2.2 STM-1 Line Unit ..................................................................................................................... 18

3.2.3 E1 Tributary Unit .................................................................................................................... 18

3.2.4 Cross-Connect Unit ............................................................................................................... 19

3.2.5 Clock Unit .............................................................................................................................. 19

3.2.6 SCC Unit ................................................................................................................................ 19

3.2.7 Power Unit ............................................................................................................................. 19


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4 Networking Application ................................................................................................ 21

4.1 Network Topology ........................................................................................................................... 21

4.1.1 Independent Networking........................................................................................................ 21

4.1.2 Hybrid Networking with the OptiX Transmission Equipment ................................................. 22

4.2 NM Data Interworking with the Third-Party Equipment .................................................................. 22

4.2.1 Extended D Bytes .................................................................................................................. 22

4.2.2 TP4 (OSI over DCC) .............................................................................................................. 23

4.2.3 IP over DCC........................................................................................................................... 24

4.2.4 SNMP Interface ..................................................................................................................... 25

5 Technical Specifications .............................................................................................. 29

5.1 Hardware Parameters .................................................................................................................... 29

5.2 Optical Interface Performance ....................................................................................................... 29

5.3 PDH Electrical Interface Performance ........................................................................................... 30

5.4 Power Supply ................................................................................................................................. 31

5.5 Environment ................................................................................................................................... 31

5.6 EMC ............................................................................................................................................... 31

5.7 Availability ....................................................................................................................................... 31

A Glossary ........................................................................................................................ 33

B Acronyms and Abbreviations ...................................................................................... 39


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1 Location in the Network HierarchyThis chapter describes the network position of the OptiX Metro 100 in thetransmission network.

As the network terminal unit of transport networks, the OptiX Metro 100 providesSTM-1 optical interfaces to access 16 x E1 services.

Figure 1-1shows the location of the OptiX Metro 100 in a transmission network.

Figure 1-1 Location of the OptiX Metro 100 in a transmission network


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2 Equipment FeaturesThis chapter describes the following features of the OptiX Metro 100:

High integration design Low power consumption

Easy and flexible installation

Multi-interface access capability

Multi-service access capability

Network level protection for multi-service signals

Multiple management modes

NM data communication with the third-party equipment

Multiple power inputs

Uniform alarm management SSM management

Rich diagnostic approaches

In-service software upgrade

Easy operation and maintenance

2.1 High Integration Design

The OptiX Metro 100 is designed in a case shape. The dimensions of the chassis are

436 mm (W) x 200 mm (D) x 42 mm (H).Except for the power module, all the other functional units are integrated into onecircuit board only.

2.2 Low Power Consumption

The normal power consumption of the OptiX Metro 100 is about 20 W. There is noneed for fans.


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2.3 Easy and Flexible Installation

The OptiX Metro 100 features easy and flexible installation. Based on the environment,you can install the OptiX Metro 100:

In the ETSI 300-mm cabinet or ETSI 600-mm cabinet

In the 19-inch cabinet

In the OC-500 outdoor cabinet. For details, refer to the OC-500 IntegratedChassis User Manual

On the wall

On the desktop

2.4 Multi-Interface Access Capability

Table 2-1lists the external interfaces of the OptiX Metro 100.

Table 2-1 Interfaces of the OptiX Metro 100

Interface Type Function Connector

Serviceinterface

STM-1 opticalinterface

Input/Output the STM-1optical signal.

SC or LC

E1 electricalinterface

Input/Output the 16xE1electrical signal.

DB44

Management

interface

NM-LAN Connect to NM system, such

as, the iManager T2000 orWeb-LCT.

RJ-45

Alarm interface Input/Outputalarm interface(ALARM)

Connect to the externalcentralized alarm equipmentor the environment monitoringdevice.

RJ-45

Powerinterface

AC interface Connect to the AC powersupply.

3-coresocket

DC interface Connect to the DC powersupply.

4-pinsocket

2.5 Multi-Service Access Capability

The OptiX Metro 100 can access:

16xE1 services

2xSTM-1 services


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2.6 Network Level Protection for Multi-Service Signals

The OptiX Metro 100 provides the accessed services with the following protectionmodes:

1+1 and 1:1 line multiplex section protection (LMS)

Sub-network connection protection (SNCP)

2.7 Multiple Management Modes

The OptiX Metro 100 can be managed by:

OptiX iManager T2000 NM system

Web-LCT local management system

LCD control panel

2.8 NM Data Communication with the Third-PartyEquipment

The OptiX Metro 100 communicates the NM data with the third-party equipmentthrough:

D1D3 or D4D12 bytes ECC communication

TP4 (OSI over DCC)

IP over DCC SNMP

2.9 Multiple Power Inputs

The OptiX Metro 100 supports the power inputs below:

100 V to 240 V AC

-48 V to -60 V DC

2.10 Uniform Alarm Management

The OptiX Metro 100 provides three Boolean input interfaces to uniformly manage thealarms and external monitoring equipment. The OptiX Metro 100 also provides oneBoolean output interface to output alarms to the centralized alarm system.


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2.11 SSM Management

The OptiX Metro 100 supports:

Standard synchronization status message (SSM)

Extended SSM

2.12 Rich Diagnostic Approaches

The OptiX Metro 100 supports the following diagnostic approaches:

Outloop on STM-1 ports

Inloop and outloop of the VC-4 path

Inloop and outloop of the VC-3 path

Inloop and outloop on E1 ports

Indicators on the equipment

Equipment power-off alarms

LCD control panel

Fault diagnosis function

2.13 In-Service Software Upgrade

The OptiX Metro 100 supports in-service upgrade of the NE software and logicsoftware.

2.14 Easy Operation and Maintenance

The OptiX Metro 100 provides an LCD control panel and a Web-LCT configurationtool to ease operation and maintenance.

The OptiX Metro 100 can start self-test function through the LCD control panel tolocate the fault on the equipment conveniently.

2.14.1 LCD Control Panel

You can operate the OptiX Metro 100 through the LCD control panel.

The LCD control panel provides the following functions:

Queries and sets the NE ID and IP address.

Queries and sets loopback on ports.

Queries and sets clock source priority.

Queries the impedance type of E1 ports.

Queries equipment software and PCB version.

Queries and sets the type of the D byte channel.


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Queries and sets the DCC protocol stack.

Queries and sets the role of the OSI protocol stack.

Queries NE critical alarms.

Queries and sets NE time and NE date.

Starts hardware self-check and queries the result.

Starts fault diagnosis and queries the result.

Modifies the password of Admin.

2.14.2 Web-LCT

The OptiX Metro 100 provides the Web-LCT (Local Craft Terminal) software. Thesoftware offers good management and configuration functions, with simple interfacedesign and parameter input. It also provides the service configuration wizard foreasier operation.

The Web-LCT provides the following functions: Configuration guide

Equipment configuration

Service configuration

Alarm query

Performance operation

Protection management

Clock configuration

Security management

Equipment maintenance Data backup

2.14.3 Easy Commissioning

Through the LCD control panel, the OptiX Metro 100 can start self-check program toease the equipment commissioning.


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3 Equipment ArchitectureThis chapter describes the appearance, system structure and functions of each unit ofthe OptiX Metro 100.

3.1 Hardware Architecture

3.1.1 Appearance

The OptiX Metro 100 allows multiple configuration modes depending on the powermodules. These configuration modes are similar in the structure except the availablepower interface types.

Figure 3-1andFigure 3-2show several common configurations.

Figure 3-1 OptiX Metro 100 with dual pluggable optical interfaces (48 V to60 V DCinput+16xE1)

Figure 3-2 OptiX Metro 100 with dual pluggable optical interfaces (100 V to 240 V ACinput+16xE1)


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3.1.2 Configuration Types

The OptiX Metro 100 allows multiple configuration modes depending on the powermodules. The modules types are shown inTable 3-1.

Table 3-1 Modules provided by the OptiX Metro 100

Module Optional Configuration Item

Power module 100 V to 240 V AC

48 V to60 V DC

Line module Dual optical interfaces, dual-fiber LC (SFP)

Tributary processing module 16xE1 services

NOTE

SFP: small form-factor pluggable

All PDH tributary units provide the 75-ohm unbalanced interface and the 120-ohm balancedinterface.

3.1.3 Front Panel

As shown inFigure 3-3,the front panel provides interfaces, buttons and indicators forvarious purposes. The following section describes the front panel with theconfiguration of "48 V to60 V DC input+2xSTM-1+16xE1".

Figure 3-3 Front panel of the OptiX Metro 100 (48 V to60 V DCinput+2xSTM-1+16xE1)

Interfaces

Table 3-2lists details about the interfaces on the front panel.


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Table 3-2 Interfaces on the front panel

No. Interface Function Connector Type

1 Power

supplyinterface

100 V to 240 V AC power

module -48 V to -60 V DC power

module(Figure 3-3)

The connector for the

DC power is a 4-pinsocket.

The connector for theAC power is a 3-coresocket.

2 TX/RX Optical interface: Input/OutputSTM-1 optical signals.

LC (SFP)

3 E1 1-8 E1 electrical interface:Input/Output 8xE1 electricalsignals.

DB44

4 E1 9-16 E1 electrical interface:Input/Output 8xE1 electricalsignals.

DB44

5 NM-LAN Connect to the NM system tomanage and configure theequipment.

RJ-45

6 ALARM Provide 3-input and 1-outputBoolean value.

RJ-45

7 ESD Connect to an ESD wrist strap.Always wear an ESD wrist strap

when operating the equipment toavoid static damage to it.

LCD and Operation Buttons

You can configure data for the equipment through the LCD and buttons.Table 3-3listsdetails about the LCD and buttons on the front panel.

Table 3-3 LCD and buttons on the front panel

No. LCD/Button Function

8 Power Power switch, used to power on/off the power supply.

9 LCD Used to show the equipment configuration and query result.

10 ENT/MENUUsed along with buttons ESC, , and to configure theequipment and query the configuration.

11 ACO Audible alarm cut button, used to turn off/on an audible alarm.

12 RST Reset button (RESET), used to reset the equipment.


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No. LCD/Button Function

13 LAMP TEST Used to test the LED test. Pressing it turns on all indicators onthe front panel except the ALARM indicator. Releasing itrenews all indicators to the working state.

Indicators

On the front panel, there are indicators for optical signals, E1 service signals andEthernet service signals. You can judge whether the equipment is working normallythrough these indicators.

Table 3-4describes each indicator on the front panel.

Table 3-4 Indicator on the front panel

Indicator Status Description

LOS (loss of linesignal indicator)

On. The STM-1 optical interface cannotreceive the optical signals or theoptical power is too low.

RUN (runningindicator)

Flashes 10 timesevery second.

The NE software is being loaded, orthe SCC board self-check state isentered.

Off. The NE software is lost, waiting to beloaded.

Flashes onceevery second.

Normal operation.

MAJ (major alarmindicator)

Flashes. The critical or major alarm occurs.

MIN (minor alarmindicator)

Flashes. The minor alarm occurs.

ACO (alarm cutindicator)

On. The equipment has cut the alarmsound.

E1 (multicolor

indicator alerting lossof E1 signal)

Off. E1 port is not used.

Constantly on,red.

An E1_LOS alarm occurs to the E1path. Each E1 path corresponds toone multicolor indicator.

Flashes, red. The major alarm (not E1-LOS) occursto the E1 path.

Constantly on,yellow.

The minor alarm occurs to the E1path.

Flashes, yellow. BIP_EXC alarm occurs to the E1 path.


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Indicator Status Description

Constantly on,green.

The E1 path is in use and no alarmoccurs.

Indicator of RJ-45:

LINK (green)

On. The link connection is normal.

Off. The link is not connected or broken.

Indicator of RJ-45:

ACT (yellow)

Flashes or on. Data is being transmitted.

Off. No data is being transmitted.

3.2 System Architecture

For the OptiX Metro 100 accessing multiple services, its system architecture is dividedfunctionally into the following parts. SeeFigure 3-4.

STM-1 line unit

E1 tributary unit

Cross-connect unit

Clock unit

SCC unit

Power unit

Figure 3-4 ptiX Metro 100 system architecture


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3.2.1 Boards

The OptiX Metro 100 integrates multiple functional units on a hardware backplane.For easy management and maintenance, each functional unit consists of differentphysical boards.

Table 3-5lists the physical boards of each functional unit.

Table 3-5 Physical boards of the OptiX Metro 100

Boards Function In

PIW48 48 V to60 V DC power Slot1

PWAC 100 V to 240 V AC power Slot1

SCC System control and communication board Slot2

SFP Small form-factor pluggable, optical module, line board Slot3

XCSA ADM cross-connect board Slot4

STGA ADM clock board Slot5

FP1D 16xE1 tributary board Slot6

3.2.2 STM-1 Line Unit

The OptiX Metro 100 can form an ADM when configured with the SFP line unit.

The STM-1 line unit provides the following functions:

Processes up to two STM-1 signals.

Provides alarms and performance events for checking line modules.

Provides outloop on the line port, inloop/outloop of the VC-4 path and automaticrelease of the software loopback for quick fault location.

Supports automatic laser shutdown (ALS) function.

Supports S-1.1 optical module, and transmits distance is 15km.

Provides small form-factor pluggable (SFP) optical modules and supports LCinterfaces.

3.2.3 E1 Tributary Unit

The OptiX Metro 100 can form different equipment types when configured withdifferent tributary units like 75-ohm or 120-ohm FP1D.

The FP1D tributary unit provides the following functions:

Processes up to 16xE1 signals.

Supports the I.421 NT1 feature.

Collects the alarms and performance events of the VC-12 channel.

Provides inloop/outloop to E1 signals for fast fault location.

Provides E1 signal pseudo-random binary sequence test function.


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Extracts the 2 MHz clock of the first and ninth E1 signals and sends it to the clockunit as the tributary clock source.

Provides the 75-ohm or 120-ohm interface impedance (the impedance of theinterface is defined before delivery).

NOTE In the I.421 working mode, the tributary unit does not support the pseudo-random binarysequence (PRBS) test.

3.2.4 Cross-Connect Unit

The cross-connect unit (XCS) is a functional unit necessarily configured for variousOptiX Metro 100 equipment types.

The cross-connect unit provides the following functions:

Provides the service grooming capability of the add/drop multiplexer (ADM) .

The cross-connect unit of ADM supports 4x4 VC-4 full cross-connection, 12x12VC-3 full cross-connection and 252x252 VC-12 full cross-connection.

3.2.5 Clock Unit

The clock unit (STGA) is a functional unit necessarily configured for various OptiXMetro 100 equipment types.

The clock unit provides the following functions:

Provides clock synchronization for the STM-1 line unit and E1 tributary unit.

Locks the line clock of the STM-1 line unit or the first and the ninth tributary clocksource of the E1 tributary unit.

The clock unit (STGA) supports the locked mode, holdover mode and free-runmode.

Provides five clock sources: two line clock sources, two tributary clock sourcesand one internal clock source.

3.2.6 SCC Unit

The SCC unit is a functional unit necessarily configured for various OptiX Metro 100equipment types.

The SCC unit provides the following functions:

Provides data communication channels (DCC) to communicate with remote NEs. Communicates with the STM-1 signal processing unit and E1 signal processing

unit, to monitor their alarms and performances, and report them to the NMsystem.

3.2.7 Power Unit

The OptiX Metro 100 supports 100 V to 240 V AC input and48 V to60 V input, toprovide power supply for the service units.


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4 Networking ApplicationThis chapter describes the network topology for the OptiX Metro 100 and NM datainterworking between the OptiX Metro 100 and the third-party equipment.

4.1 Network Topology

The OptiX Metro 100 is applied as the network terminal unit of the transmissionnetwork. The traffic is light and the networking is simple.

The OptiX Metro 100 may form a network alone, or work with other transmissionequipment, such as the OptiX 155/622H(Metro1000).

4.1.1 Independent Networking

The OptiX Metro 100 supports the NE type of ADM. It can form chain networks andring networks independently, as shown inFigure 4-1andFigure 4-2.

Figure 4-1 Chain network composed of the OptiX Metro 100

Figure 4-2 Ring network composed of the OptiX Metro 100


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4.1.2 Hybrid Networking with the OptiX TransmissionEquipment

The OptiX Metro 100 can work with other transmission equipment in a network. See

Figure 4-3.

Figure 4-3 Hybrid networking with other equipment

4.2 NM Data Interworking with the Third-PartyEquipment

4.2.1 Extended D Bytes

As shown inFigure 4-4,the OptiX Metro 100 is interconnected with the third-partyequipment.

You can flexibly configure the NM data on the D1-D3 or D4-D12 bytes at the crosspoints of the OptiX Metro 100 and third-party equipment.

Figure 4-4 Hybrid networking through extended D bytes


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4.2.2 TP4 (OSI over DCC)

OSI over DCC means performing DCC communication with OSI protocol stackwithout occupying extra overhead or service channels. It can fulfill the differentdemands for the DCC interworking and networking among the equipment of differentvenders.

OSI over DCC can realize the NM data interworking among the equipment of differentvenders.

Managing the OptiX Equipment Through OSI DCN

This means directly managing the network composed of the OptiX equipment with therouting function at the third layer of OSI data communication network (DCN). SeeFigure 4-5.

Figure 4-5 Managing the OptiX equipment through OSI DCN

Managing the OptiX Equipment Through OSI Network Composed of theThird-Party Equipment

This means managing the network composed of the OptiX equipment with the routingfunction at the third layer of OSI protocol stack of the third-party equipment. SeeFigure 4-6.

Figure 4-6 Managing the OptiX equipment through OSI network composed of thethird-party equipment

Traversing the OptiX Equipment to manage the Third-Party Equipment

This means managing the third-party equipment that adopts the OSI protocol stackwith the routing function of the OSI protocol stack of the OptiX equipment. SeeFigure4-7.


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Figure 4-7 Traversing the OptiX equipment to manage the third-party

4.2.3 IP over DCC

IP over DCC indicates the NM data interworking at the network layer and adopts IPprotocol sharing to transmit the NM data.

The GNE, DCN and element management system (EMC) must support the IPprotocol at the same time. As a result, the network composed of the third-partyequipment and that composed of the OptiX Metro 100 can form a DCN based on thestandard protocol.

There are two ways of networking based on IP over DCC:

The NM data of the OptiX Metro 100 is transparently transmitted by thethird-party equipment through IP over DCC. SeeFigure 4-8.

The NM data of the third-party equipment is transparently transmitted by theOptiX Metro 100 through IP over DCC. SeeFigure 4-9.

Figure 4-8 NM data transparently transmitted by the third-party equipment


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Figure 4-9 Transparently transmitting the NM data of the third-party equipment

4.2.4 SNMP Interface

SNMP is a standard NM protocol based on the user datagram protocol (UDP)communication. The OptiX Metro 100 provides an interface that supports the SNMPprotocol. Any NM system that supports the SNMP protocol can access and managethe OptiX Metro 100 through this interface.

Interconnecting the NM System and NE Directly Through the IP NetworkThe SNMP NM system is directly interconnected with the OptiX Metro 100 through theIP network, as shown inFigure 4-10.


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Figure 4-10 Interconnecting the SNMP NM system and NE directly through the IPnetwork

The SNMP interface does not receive or transmit the NM communication packetthrough the communication modules, but directly monitors the UDP161 port and waitsfor the NM request at this port.

The SNMP sends the active reporting packet (event report) to the UDP162 port(configurable) of the NM system.

In this networking mode, the NM system must configure the SNMP NM configurationdata and issue the NM data, including the IP reporting port of the NM system,read-write community name and reporting packet version, to the NE to be accessedthrough the non-SNMP NM system previously.

The NM system can directly access the equipment and adopt direct UDPcommunication with the SNMP interface. Otherwise, the SNMP NM system cannotaccess the NE.

Managing the Remote NE Through SNMP over ECC by the NM System

The SNMP NM system manages the remote NE (OptiX Metro 100) through the NE IPtransparent transmission. SeeFigure 4-11.


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Figure 4-11 Managing the remote NE (OptiX Metro 100) through the NE IPtransparent transmission by the SNMP NM system

The SNMP protocol adopts UDP as its protocol at transport layer, requiring direct IPcommunication between the NM system and the equipment.

The OptiX Metro 100 supports the IP transparent transmission, so the SNMP NMsystem can directly access the remote NE.

All the NEs in the sub-network must support IP over DCC. Otherwise, the SNMP NMsystem is refused to access the remote NE.

Before accessing the remote NE, you must configure the NM configuration data of theremote NE. Otherwise, the SNMP NM system cannot access the remote NE.


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5 Technical SpecificationsFor ease of query, this chapter summarizes the technical specifications of the OptiXMetro 100.

5.1 Hardware Parameters

Table 5-1lists the weight, dimensions and power consumption of the OptiX Metro 100.

Table 5-1 Hardware parameters of the OptiX Metro 100

Equipment PowerConsumption

Weight Dimensions

OptiX Metro100

In full configuration,it is about 17 W.

In full configuration,it is about 3 kg.

436 mm (W) x 200mm (D) x 42 mm (H)

5.2 Optical Interface Performance

Table 5-2lists the performance of the STM-1 optical interface.

Table 5-2 STM-1 optical interface performance

Item Performance Value

Rate 155520 kbit/s

Optical module S-1.1

Working wavelength range 1261 nm to 1360 nm

Mean launched power -8 dBm to -15 dBm

Minimum extinction ratio 8.2 dB

Minimum sensitivity -28 dBm


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Item Performance Value

Minimum overload -8 dBm

Allowable frequency deviation at the optical input 20 ppm

5.3 PDH Electrical Interface Performance

Table 5-3lists the performance of the E1 electrical interface.

Table 5-3 E1 electrical interface performance

Item Performance Value StandardCompliance

Rate 2048 kbit/s

Code HDB3

Allowable frequency deviationat the input

2048 kbit/s50 ppm ITU-T G.703

Jitter tolerance at the input f1 (20 Hz): 18 UI

f2 (2.4 kHz): 18 UI

f3 (6 kHz/8 kHz): 1.5 UI

f4 (100 kHz): 1.5 UI

ITU-T G.823

AIS signal bit rate at the output 50 ppm ITU-T G.703Mapping jitter at the tributaryinterface

B1 (f1f4): 0.4 UIp-p

B2 (f3f4): 0.075 UIp-p

ITU-T G.783

Combined jitter at the tributaryinterface

B1 (f1f4): 0.4 UIp-p

B2 (f3f4): 0.075 UIp-p

ITU-T G.783

System output jitter at thetributary interface

B1 (f1f4): 1.5 UIp-p

B2 (f3f4): 0.2 UIp-p

ITU-T G.823


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5.4 Power Supply

Table 5-4lists the power supply parameters of the OptiX Metro 100.

Table 5-4 Power supply parameters

Power Supply Input Voltage Range

100 V to 240 V AC 90 V to 260 V

48 V to60 V DC 38.4 V to72 V

5.5 Environment

Table 5-5lists the environment indexes of the OptiX Metro 100.

Table 5-5 Environment indexes

Environment Condition Temperature Humidity

Long-term normal working condition 0to 45 10% to 90%

Short-term working environment 5to 0

45

to 50

5% to 10%

90% to 95%

Short-term: The consecutive working time does not exceed 96 hours and theaccumulative working time each year does not exceed 15 days.

The value of temperature and humidity of the equipment is measured 1.5 metersabove the ground and 0.4 meter before the equipment.

5.6 EMC

The electromagnetic compatibility (EMC) design of the OptiX Metro 100 is compliantwith the ETSI ETS EN 300386 recommendations.

5.7 Availability

The availability of the OptiX Metro 100 is 99.999%.


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A Glossary1

19-inch cabinet A cabinet which is19 inches in width and 600mm in depth, compliant with thestandards of the IEC297.

A

add/dropmultiplexer

A multiplexer capable of extracting and inserting lower-rate signals from ahigher-rate multiplexed signal without completely demultiplexing the signal.

ADM add/drop multiplexer.

administrator A user who has authority to access all the Management Domains of the

EMLCore product. He has access to the whole network and to all themanagement functionalities.

AIS Alarm Indication Signal. A signal sent downstream in a digital network if anupstream failure has been detected and persists for a certain time.

asynchronous A network where transmission system payloads are not synchronized and eachnetwork terminal runs on its own clock.

attenuation Reduction of signal magnitude or signal loss, usually expressed in decibels.

auto-negotiation The rate/work mode of the communication party set as self-negotiation isspecified through negotiation according to the transmission rate of the oppositeparty.

availability The foundation for many Bellcore reliability criteria is an end-to-end two-wayavailability of objective of 99.98% for interoffice applications (0.02% unavailabilityor 105 minutes/year down time). The objective for loop transport between thecentral office and the customer premises is 99.99%. For interoffice transport, theobjective refers to a two-way broadband channel, e.g. SONET OC-N, over a250-mile path. For loop applications, the objective refers to a two-waynarrowband channel, e.g. DS0 or equivalent.


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B

BIP BIP-X code is defined as a method of error monitoring. With even?parity an X-bitcode is generated by the transmitting equipment over a specified portion of thesignal in such a manner that the first bit of the code provides even parity over the

first bit of all X-bit sequences in the covered portion of the signal, the second bitprovides even parity over the second bit of all X-bit sequences within thespecified portion, etc. Even parity is generated by setting the BIP-X bits so thatthere is an even number of 1s in each monitored partition of the signal. Amonitored partition comprises all bits which are in the same bit position within theX-bit sequences in the covered portion of the signal. The covered portionincludes the BIP-X.

BITS Building Integrated Timing Supply. A building timing supply that minimises thenumber of synchronisation links entering an office. Sometimes referred to as asynchronisation supply unit.

C

chain network One type of network that all network nodes are connected one after one to be inseries.

channel The smallest subdivision of a circuit that provides a type of communicationservice; usually a path with only one direction.

client A kind of terminal (PC or workstation) connected to a network that can sendinstructions to a server and get results through a user interface. See also server.

clock tracing The method to keep the time on each node being synchronized with a clocksource in a network.

D

DCN Data Communication Network. A communication network within a TMN orbetween TMNs which supports the data communication function (DCF).

DDF Digital Distribution Frame. A frame which is used to transfer cables.

domain The domain of the T2000 specifies the scope of address or functions which areavailable to a certain user.

E

ECC Embedded Control Channel. An ECC provides a logical operations channelbetween SDH NEs, utilizing a data communications channel (DCC) as itsphysical layer.

ESD Electrostatic Discharge. The phenomena the energy being produced byelectrostatic resource discharge instantly.

ETSI European Telecommunications Standards Institute.

extended ID The serial number of a subnet where an NE resides, which is usually used todistinguish different network segments in a WAN. An extended ID and an ID form

the physical ID of an NE.


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F

frame A cyclic set of consecutive time slots in which the relative position of each time

slot can be identified.

H

hardwareloopback

A method to use a fiber to connect the receiving optical interface with thetransmitting one on a board. It performs transmission tests, which methodusually does not require the assistance of personnel at the served terminal.

I

IP over DCC The IP Over DCC follows TCP/IP telecommunications standards and controlsthe remote NEs through the Internet. The IP Over DCC means that the IP overDCC uses overhead DCC byte (the default is D1-D3) for communication.

J

jitter tolerance For STS-N electrical interfaces, input jitter tolerance is the maximum amplitudeof sinusoidal jitter at a given jitter frequency, which results in no more than twoerrored seconds cumulative, when the signal is modulated at an equipment inputport. These errored seconds are integrated over successive 30 secondmeasurement intervals. Requirements on input jitter tolerance as just stated, arespecified in terms of compliance with a jitter mask, which represents acombination of points. Each point corresponds to a minimum amplitude ofsinusoidal jitter at a given jitter frequency which results in two or fewer erroredseconds in a 30 second measurement interval when the signal is modulated atthe equipment input port. For the OC-N optical interface, it is defined as theamplitude of the peak-to-peak sinusoidal jitter applied at the input of an OC-Ninterface that causes a 1 dB power penalty.

jitter Short waveform variations caused by vibration, voltage fluctuations, controlsystem instability, etc.

L

link A "topological component" that provides transport capacity between twoendpoints in different subnetworks via a fixed (i.e., inflexible routing) relationship.The endpoints are "subnetwork termination point pools" for SONET, and linktermination points for ATM. Multiple links may exist between a pair ofsubnetworks. A link also represents a set of "link connections".

loopback The fault of each path on the optical fibre can be located by setting loopback foreach path of the line. There are three kinds of loopback modes: No loopback,Outloop, Inloop.


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M

MAC Media Access Control. The data link sublayer that is responsible for transferringdata to and from the Physical Layer.

mapping A procedure by which tributaries are adapted into virtual containers at theboundary of an SDH network.

MSP The MSP function provides capability for switching a signal between andincluding two MST functions, from a working to a protection channel.

multiplexer An equipment which combines a number of tributary channels onto a fewernumber of aggregate bearer channels, the relationship between the tributary andaggregate channels being fixed.

N

NE explorer NE Explorer is the main operation interface of the T2000. For easy navigation,the NE Explorer window presents an expandable directory tree (Function Tree)in the lower left pane. The configuration, management and maintenance of theequipment are accessed here.

O

ODF Optical Distribution Frame. A frame which is used to transfer and spool fibers.

P

pass-through The action of transmitting by a node exactly what is received by that node for anygiven direction of transmission. A pass-through can be unidirectional orbidirectional. For BLSRs, a pass-through refers to the K1 and the K2 bytes andthe protection channels. Three types of pass-throughs are used in BLSRs: Kbyte passthrough, unidirectional full pass-through, and bidirectional fullpass-through.

PDH Plesiochronous Digital Hierarchy. PDH is the digital networking hierarchy thatwas used before the advent of Sonet/SDH.

SSDH Synchronous Digital Hierarchy. A hierarchical set of digital transport structures,

standardized for the transport of suitably adapted payloads over physicaltransmission networks.

self-healing Establishment of a replacement connection by network without the NMCfunction. When a connection failure occurs the replacement connection is foundby the network elements and rerouted depending on network resources availableat that time.

SFP small form-factor pluggable.


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SSM Synchronization Status Message. ITU-T defines S1 byte to transmit the networksynchronization status information. It uses the lower four bits of the multiplexsection overhead S1 byte to indicate 16 types of synchronization quality grades.

subnet mask Also referred to as the network mask off code. It is used to define network

segments, so that only the computers in the same network segment cancommunicate with one another, thus suppressing broadcast storm betweendifferent network segments.

subnet The logical entity in the transmission network and comprises a group of networkmanagement objects. A subnet can contain NEs and other subnets. A subnetplanning can enhance the organization of a network view.

synchronous A network where transmission system payloads are synchronized to a master(network) clock and traced to a reference clock.

UUAT Unavailable Time. A UAT event is reported when the monitored object generates

10 consecutive severely errored seconds (SES) and the SESs begin to beincluded in the unavailable time. The event will end when the bit error ratio persecond is better than 10-3 within 10 consecutive seconds.

W

WTR time A period of time that must elapse before afrom a fault recoveredtrail/connection can be used again to transport the normal traffic signal and/or toselect the normal traffic signal from.

WTR Wait to Restore. This command is issued when working channels meet therestoral threshold after an SD or SF condition. It is used to maintain the stateduring the WTR period unless it is pre-empted by a higher priority bridge request.


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B Acronyms and AbbreviationsA

ADM add/drop multiplexer

AIS Alarm Indication Signal

APS Automatic Protection Switch(ing)

B

BER Bit Error Ratio

BIP Bit-Interleaved Parity

BITS Building Integrated Timing Supply System

C

CRC Cyclic Redundancy Code

D

DCC Data Communication Channel

DCN Data Communication NetworkDDF Digital Distribution Frame

E

ECC Embedded Control Channel

ESD electrostatic discharge

ETSI European Telecommunications Standards Institute


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G

GUI Graphic User Interface

I

IEEE Institute of Electrical and Electronics Engineers

ISDN Integrated Services Digital Network

ITU-T International Telecommunication Union - Telecommunication StandardizationSector

L

LCDLiquid Crystal Display

LCT Local Craft Terminal

M

MSP Multiplex Section Protection

O

ODF Optical Distribution Frame

OSI open systems interconnection

P

PDH Plesiochronous Digital Hierarchy

S

SDH Synchronous Digital Hierarchy

SFP Small Form-Factor Pluggable

SNCP Sub-Network Connection Protection

SSM Synchronization Status Message

W

WTR Wait-to-Restore

OptiX Metro 100 Product Description

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