Spirit Wiring Plan; Pin Assignments - AT&T SPIRIT 308 Product Information Manual

Product Information Guide

SPIRIT WIRING PLAN

The SBDS (Small-Business Distribution System) wiring plan for the SPIRIT is the same plan
used for the MERLIN CS. The SPIRIT system requires two-pair wiring, but four-pair wiring is
used to facilitate migration to four-pair systems in the future. Unlike MERLIN CS control
units, SPIRIT control units ship WITHOUT 267C adapters. If these are needed, you must
provide them from your supply. Their cost is covered in the flat-rate wiring billed to the
customer. Station sets ship WITH mounting cords.

PIN ASSIGNMENTS

The modular pin assignments for the station jack on the control unit and station set are
shown below:
PIN
NUMBER
1
2
3
4
5
6
7
8
CONTROLLER JACK
8-position
No-connection
No-connection
Data/Ring
Voice Ring
Voice Tip
Data/Tip
No-connection
No-connection
AT&T – PROPRIETARY
8
PIN
NUMBER
1
2
3
4
5
6
T217
STATION JACK
6-position
No-connection
Data/Tip
Voice Tip
Voice Ring
Data/Ring
No-connection