AT&T MERLIN LEGEND Release 3.1 System Planning Manual page 288

DS1 Connectivity Ordering
After the contract is signed, the sales representative or authorized dealer
contacts the DS1 connectivity vendor to discuss the T1/PRI service order. The
vendor needs information about the communications system as well as
customer identification. Table E 1 describes the kind of information the vendor
requires. This table should be reviewed with the customer's network
representative or dealer so the information will be available when needed.
Table E–1. Guide to DS1 Connectivity Ordering
Communications System
Manufacturer
Model
Type (Mode)
Jack Type
Facility Interface Code
Digital PBX
o
Has the EIA standard CISA transmission path
o
Is senderized
o
Is the equipment that must be timed
o
Has an internal stratum clock level of 4
o
Provides automatic call distribution through Group Calling feature
o
Provides loopback (keep signal alive) through CSU.
AT&T
MERLIN LEGEND
digital PBX
RJ48C or RJ48X
Digital D4 Framing
Digital ESF Framing
Digital ESF and B8ZS
E
E–1
System Planning