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GENERAL DESCRIPTION

ALCATEL 1000 E10

THE CSN SUBSCRIBER ACCESS UNIT

This document is a general description of the CSN, the subscriber access unit of the Alcatel 1000 E10 MM system. It broadly shows the general features for the subscriber access unit, e.g. : general principles, capacities, supported functions, interfaces, architecture, operation and maintenance, technology and environment. The CSN is permanently upgraded so as to incorporate the latest improvements of the technology and, therefore, this document cannot be used as a technical specification for a customer contract.#3DR 20116 QMWW PTZZA 02

This document provides general information, about the latest generation of the CSN family.

VIETNAM Alcatel Fixed Networks Division - FND

THE CSN SUBSCRIBER ACCESS UNITRef. 3DR60122OCWWUDZZA01 - 00 17/09/2003

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All rights reserved. Passing on and copying of this document, use and communication of its contents, not permitted without written authorization

TABLE OF CONTENTS

1.

INTRODUCTION .....................................................................................................3 1.1. 1.2. 1.3. 1.4. NETWORK OPTIMIZATION ................................................................................3 FLEXIBILITY.......................................................................................................5 SERVICES OFFERED TO THE SUBSCRIBERS .........................................................5 INTERFACES .....................................................................................................5

2. ARCHITECTURE.........................................................................................................7 2.1. 2.2. 2.3. 2.4. GENERAL..........................................................................................................7 SUBSCRIBER LINE CARDS ..................................................................................8 DIGITAL CONCENTRATOR CN ........................................................................10 CONTROL UNIT (UCN) ...................................................................................11

3. IMPLEMENTATION OF THE DIFFERENT PRODUCTS .................................................12 3.1. 3.2. 3.3. 4. THE CSN PRODUCTS ......................................................................................12 THE CNE PRODUCTS ......................................................................................16 THE CNE 64 PRODUCTS.................................................................................22

CAPACITY AND PERFORMANCE ............................................................................24 4.1. 4.2. 4.3. CAPACITY ......................................................................................................24 PERFORMANCES.............................................................................................25 COMPATIBILITY ..............................................................................................25

5.

OPERATION AND MAINTENANCE.........................................................................26 5.1. 5.2. DEFENCE .......................................................................................................26 MAINTENANCE ..............................................................................................26

6.

EQUIPMENT PRACTICE ..........................................................................................28 6.1. 6.2. SUBRACKS AND BACKPLANES.........................................................................28 RACKS............................................................................................................29

7.

CLIMATIC ENVIRONMENTAL CONDITIONS...........................................................30 7.1. 7.2. OPERATING CONDITIONS..............................................................................30 ELECTROMAGNETIC ENVIRONMENTAL CONDITIONS......................................30

8.

GLOSSARY.............................................................................................................31

VIETNAM Alcatel Fixed Networks Division - FND

THE CSN SUBSCRIBER ACCESS UNITRef. 3DR60122OCWWUDZZA01 - 00 17/09/2003

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1. INTRODUCTIONMost operators now have multiple access elements that are specialised by service telephone subscriber concentrators, leased lines multiplexers, ADSL line terminals, cable or optical fibre lines to users. These various accesses are now generally connected to an SDH loop that centralises and secures the transmission of the access to the telecommunication host center. This situation has created a need to federate all accesses on the same Multiservice Access Node. The CSN makes all these new features possible. This is change within continuity in the best sense of the term.

l) tiona ( opSS7E10 MM ( VoATM )

A1000 Call Server

Rsid. Gateway

PSTN

IP or ATM BackboneTrunking Gateway

POTS

CSN

ISDN

Access Gateway

DataADSL

Figure 1 The CSN in an NGN network

1.1.

NETWORK OPTIMIZATIONThe CSN is a modular equipment which can be co-located with the switch or remotely in either buildings or containers. This means substantial savings for operators since they can concentrate the traffic on a small number of PCM lines.

VIETNAM Alcatel Fixed Networks Division - FND

THE CSN SUBSCRIBER ACCESS UNITRef. 3DR60122OCWWUDZZA01 - 00 17/09/2003

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The CSN has a very simple structure: a digital control and connection unit (UCN) and up to 20 concentrators CN, each concentrator fitted with 16 slots. The CN itself can be either co-located to a CSN or located remotely. A co-located CN is called a CNL and a remote CN is called a CNE. These 2 levels of remoteness give an extreme versatility to the network operator for managing the subscriber geographic configuration. This allows the location of a subscriber access node in the near vicinity of subscribers. In urban environments, subscribers are generally close to the exchange and heavy line usage is the norm. CSNs are installed in the parent exchange switchroom, CNEs are distributed in street cabinets and located in telecom or commercial buildings. Interconnection to the host exchange is usually performed via SDH rings. In suburban areas or medium-sized towns, populations are less dense and the exchange configuration combines both local and remote CSNs. Both local and remote digital concentrators are used. In outlying areas, subscribers are dispersed in and around villages. A single local or remote CSN serves up to 20 remote digital concentrator (CNE) sites.

Village

Town

Cityn STM1 ATM

64/5120 lines

ATM IP

64/512 lines

n PCM /STM1 ATM 2 to 16 PCM NB

CSNLV5.2 PRA

OCB283

PSTN ISDN SS7

CNE

1 to 8 PCM NB 1 to 8 PCM ATM

CSND

CNE

CSND

Suburb

Figure 2 Example of network topology

VIETNAM Alcatel Fixed Networks Division - FND

THE CSN SUBSCRIBER ACCESS UNITRef. 3DR60122OCWWUDZZA01 - 00 17/09/2003

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1.2.

FLEXIBILITYA large range of subscriber line interfaces is one of the keys features of the CSN: Its 16 universal slots per CN accept all types of connection boards for POTS, ISDN BRA and PRA, Leased Lines, V5.1 , ADSL, or services boards such tones, voice prompts , line testing equipment or frame concentration. Simple conversion from analogue services to ISDN or ADSL services is therefore possible at marginal cost: ISDN or ADSL lines are connected by replacing or adding subscriber line cards in the CSN. Cost-effective use of local networks: pair gain systems are not required since both local and remote lines can be connected to CNs in the same way and take advantage of the same facilities : The CSN offers all connected users, whatever their locations, equal access to POTS, ISDN and ADSL services. The network operator benefits from the same subscriber administration and management for all subscribers, irrespective of where they are located. In addition, the equipment, at CSN level as well as CNE level, can be installed in Telecom buildings, conventional buildings, in containers or in roadside cabinets.

1.3.

SERVICES OFFERED TO THE SUBSCRIBERSt

Conventional telephone services (POTS) ISDN services, including:p p

t

bearer services: speech, 3.1 kHz, 7 kHz, 64 Kbit/s unrestricted; teleservices (telephone, fax, teletex, videotex) and remote surveillance;

t

Analogue and ISDN subscriber supplementary services; Frame service processing for data network access. Broadband services including high speed Internet access

t

t

1.4.

INTERFACESt

Subscriber interfacesp p p p p p

analogue (Rotary dial & DTMF / resistive and complex impedance) ISDN Basic Rate Access (2 wires with echo cancellation 2B1Q encoding) ISDN Primary Rate access (75 and 120 Ohms) 64 Kbit/s codirectional and analogue 2-4 wires leased lines V5.1 interface ADSL (full and lite ADSL) 2 Mbit/s (G703 and HDSL for NB services, IMA for BB services) u nx2 Mbit/s on optical fiberTHE CSN SUBSCRIBER ACCESS UNITRef. 3DR60122OCWWUDZZA01 - 00 17/09