Ds1 Connectivity (100D Module) - AT&T MERLIN LEGEND Release 3.1 System Planning Manual

Selecting Line/Trunk Options

DS1 Connectivity (100D Module)

Use these instructions only if the system has a 100D module. Otherwise, skip to
"Tie Trunks."
DS1 (Digital Signal 1) connectivity involves the transmission of digital signals in
DS1 format. The interface enabling the system to allow DS1 connections is the
100D module. The system can have up to three 100D modules. Each 100D
module supports up to 24 logical endpoints (IDs) or ports (one for each
channel), even though the module has only one jack.
The 100D module can be configured to operate with either of the following types
of service:
T1 (factory setting). To transmit and receive voice and analog data and,
with T1 Switched 56 service, digital data.
PRI (Primary Rate Interface). To transmit and receive voice, analog, and
digital data.
To ensure proper protocol between both ends of the DS1 connection, the
following options should be set for both types of service:
Type of Service
Frame Format
Suppression (Line Code)
Signaling mode
Line Compensation
Clock Synchronization
Channel Service Unit (CSU) setting
Additional settings must be entered for both services, especially for PRI and T1
Switched 56 service. Appropriate settings are determined by the transmission
facility to which the module is connected and/or is supplied by the service
provider. This section contains instructions for both T1 and PRI services.
NOTE:
PRI service for Release 2.0 and later systems requires that the service
provider's switching equipment be either a 4ESS Generic 13 through 16,
5ESS Generic 6, or a 5ESS serving the FTS2000 (federal government only)
network. PRI service for a Release 1.0 or Release 1.1 system requires that the
switching equipment be a 4ESS Generic 13 through Generic 16 switch.
Because of the complexity of DS1 connectivity planning, you must review the
information in the Equipment and Operations Reference before you begin this
section and as you work through these instructions.
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Lines/Trunks