CSN

SUBSCRIBER ACCESS UNITS(CSN)


CSN are so designed that they can be equipped with either analogue or
digital subscriber or both. The cards for analog and digital subscribers are
different, but can be equipped in any slot of the shelf.
CSN can be either placed in the exchange switch room or at a remote location.
Further, subscriber card shelf can also be placed at the rack or at a remote
location. These features provide great flexibility to meet any type of requirement
of dense or sparse connection densities.
Depending on their location, CSN is known as CSNL or CSND and subscriber
shelf is known as local or remote concentrator.
The CSNL is connected to switching matrix through a minimum of 1 GLR or a
maximum of 2 GLR’s.
The CSND is connected to SMT rack through a minimum of 2 PCM and a
maximum of 16 PCM’s.


ROLE AND LOCATION:


ALCATEL 1000 E-10 is the digital system developed
by ALCATEL CIT. It can be used for the entire range of switch, from the smallest
local exchanges to the largest transit gateway switches. It adapts to every type of
environment. System operation and maintenance can be local or common to
several switches, or both at the same time. It provides all modern communication
services i.e. basic telephony, isdn, centrex, digital cellular radiotelephony and all
in services.


SYSTEM APPLICATIONS:
1. Local subscribers exchange
2. Remote subscribers unit
3. Transit exchange
4. Hybrid local/transit exchange
5. Tandem exchange
6. Centrex(private or public)