ISDN ISSUE2[1].1

ISSUEISSUE

Fixed Network Curriculum

Development Section

Fixed Network Curriculum

Development Section

OSC002009 ISDNOSC002009 ISDN

2.12.1

Confidential Information of Huawei. No Spreading without Permission.

Security Level: Internal

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ObjectivesObjectives

Understand the concept and structure

of ISDN

Understand Hardware Configuration

and Data Setting of ISDN of C&C08

Upon completion of this course,you will be able to:



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Course ContentsCourse Contents

Chapter 1 Concept of ISDN

Chapter 2 Application of ISDN in C&C08

Chapter 3 Data Setting



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ISDNISDN

with ISDN, both the voice phone and the computer may be served by the existing phone line, and the need for a second line and the need for a modem is eliminated.

Why we choose ISDN?Why we choose ISDN?



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Integrated Services Digital NetworkIntegrated Services Digital Network

Integrated Services Digital Network

The evolution of ISDN is based on the existing telecommunication

networks .

ISDN will provide end-to-end digital connectivity.

ISDN is intended to handle a variety of services including both voice

and non voice via standard user interfaces.



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Three preconditions:Three preconditions:

Digital transmission trunks Digital transmission trunks

Digital switching system Digital switching system

CommonCommon channelchannel signaling signaling system (CCS7) system (CCS7)

ISDNISDN

Existing NetworkExisting Network

Based on the existing NetworkBased on the existing Network



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The analog-to digital conversion occurs at the subscriber 's premises, and not at the exchange.A total digital path can then be made between two subscribers.A path through the network can be made which is suitable for both data and voice

End-to-end digital connectivityEnd-to-end digital connectivity



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The user can access the network via a series of unified user - network interfaces to enjoy various services

Standard User-network interfaceStandard User-network interface



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User-to-Network signaling

DSS1 （ ISDN Digital Subscriber Signaling No.1 ） is used to transfer the

control signals between network and the user terminals.

Network Signaling

ISUP（ ISDN User Part） is used on the interoffice trunks.

User-to-user signaling

UUS（ User-User Signaling） is used for the end-to-end message between two

user terminals and no dedicated channel is required for UUS and just in virtue of

DSS1 and ISUP.

ISDN Signaling TypeISDN Signaling Type



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TATE2

NT1NT2TE1 S T U

R S

Reference Point Functional Grouping

ISDN User AccessISDN User Access



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NT1

The main points of U-interface is to transfer digital signals on the existing 2-wire subscriber loop, reducing the transmission loss as its best ability. So multilevel scheme is a desirable solution.

U InterfaceU Interface



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Binary System Voltage

10 £ «3V

11 £ «1V

01 £ 1V

00 £ 3V

2B1Q Coding2B1Q Coding



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TheS-interfaceis4Wireinterfaceforasinglesubscriber termination of TE1 equipment.TheT-interfaceisalso4wireinterfacetoterminateNT2 equipment.When NT2 does not exist, S- and T- interface are integrated as one entity, the so-called S/T interface.

NT1NT2TE1 S T U

S/T interfaceS/T interface



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TATE2R S

The R-interface is a 2-wire interface that connects non-standard ISDN equipment (TE2 equipment) to the TA. There are many types of interface for the R-interface ( for example, an RS-232C or a 2-wire telephone line).

R InterfaceR Interface



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TA

TE1

NT1

TE2

LE

U

R S

S / T

Physical line termination at the subscriber's premise.Performs 2/4 wires conversion.Locally powered or remotely powered by the switch.

NT1NT1



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NT1NT2TE1 S T U

NT2 is an intelligent device, meaning that it does more than just providing physical interfaces. NT2 functions may include switching functions, concentration functions and some layer 2 and layer 3 protocol processing functions. The ISPBX and LAN router are NT2 devices.

NT2NT2



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NT1NT2TE1 S T U

TE1 refers to devices that support the standard ISDN interface. This means the devices uses 4 wires. TE1 is the standard ISDN terminal, such as ISDN phone set， ISDN PC， G4 Fax ， Video telephone and so on.

TE1TE1



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TATE2R S

TA mainly acts as a velocity adapter and protocol conversion with S interface on the one end and various non-ISDN interfaces on the other end.

TATA



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Two Types :

BRI: Based on the telephone line

PRI: Based on the PCM

UNIUNI



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Channel

A B-channel is a 64 kbps channel in two directions and can be used for the voice and data on circuit switched basis.The main purpose of D-channel is to transport the signaling and control information between the subscriber equipment and the exchange in packet form.

ChannelsChannels



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D 16: 16Kbps ( BRI) D 16: 16Kbps ( BRI) D 64: 64kbps ( PRI) D 64: 64kbps ( PRI)

D ChannelD Channel



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B

D

B

The BRA is a digital stream of 144kb/s, which flows over two

wires between the subscriber equipment and the exchange.

The term 2B+D is used to characterize the BRA.

BRABRA



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BD

B

B

B

B

B

B

BBB

B

B

B

B

BB

BB

B

B

BB

B

PRA can be used for ISPBX or for access server (equipment for Internet service provider). The PRA consists of 32 64-kb/s channels divided into 30 B-channels, 1 D-channel and 1 control channel.

PRAPRA



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DSL

MPU

PRA

NOD LPRA

LPN7

ISUP

BNET

30B+D

2B+D

HW

HW HW

HW

HW

No7 Trunk

NOD Inner Bus

ISDN and C&C08 SwitchISDN and C&C08 Switch



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N/TDSL

BRA

SMThe BRA port is provided by the DSL and eight BRA ports per card.DSL is compatible with ASL. The former uses even equipment number.

BRABRA



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LAN RouterDTF

SM

PRA interface is provided by DTF board. Two PRA interfaces per DTF board. It is used to connect router, access server or ISDN-PABX.DSS1 of PRA interfaces are carried in TS16, the LPRA board will undertake data link layer function.

PRAPRA



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ISUP

LE LE

In the case of using ISUP as the inter office signaling, DTF

board should be configured as ISUP and LPN7 board is

indispensable.

Refer to the chapter of trunk data for details.

Network Interface : ISUPNetwork Interface : ISUP



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Course ContentsCourse Contents

Chapter 1 Concept of ISDN

Chapter 2 Application of ISDN in C&C08

Chapter 3 Data Setting



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ADD/ADB DSL

ADD

ISDNDAT

define the service attributes of ISDN

ADD DNSEG

ADD CNACLD

ADD CALLSRC

How to Add DSL Subscriber?How to Add DSL Subscriber?



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Press the buttons below to learn the details of adding a digital subscriber.

ADD ISDNDATADD ISDNDAT



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ADD DSLADD DSL



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Press the buttons below to learn the details of adding a digital subscriber.

ADD MSNADD MSN



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ISDN ISSUE2[1].1

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