AT&T MERLIN LEGEND Key System Planning page 86

Lines
See Your AT&T representative or
authorized dealer for the current release
and version number of the system.
3-32
Line Options
Table 3-6 Guide to DS1 Facilities Ordering
Communication System
Manufacturer
Model
Type (Mode)
Jack Type
Facility Interface Code
Digital PBX
Has the EIA standard CISA transmission path
Is slenderized
Is the equipment that must be timed
Has an internal stratum clock level of 4
Provides automatic call distribution through Group Calling feature
Provides Ioopback (keep signal alive) through CSU
Channel Service Unit
Manufacturer AT&T
Model 551-T1 L1
Reg. Number GI 472-
26819-DE-N
Facility Interface Codes:
Digital D4 Framing 04DU9-B
Digital ESF Framing 04DU9-C
Digital ESF and B82S 4DU95
Standard CSU jacks and test points provided
Audible Ringing Source
Digital Key
Testing Service
AT&T
If a CSU other than those listed above is used, AT&T will not accept the
responsibility for its installation, connection, or testing.
Echo Control Device
Not used
AT&T
MERLIN LEGEND
digital Key
RJ48C or RJ48X
Digital D4 Framing 04DU9-B
Digital ESF Framing 04DU9-C
Digital ESF and B8ZS 4DU95
Other
AT&T
ESF-T1
GIC 472-
16544-DE-N
Channel Service