AT&T 1987 AT&T Telephone User Manual


 
SYSTEM 25
CABINET
ZTN82
OR ZTN128
CALL
PROCESSOR
TN758
POOLED
MODEM
——
TDM
TN726
DATA
LINE
BUS
2012D 248B
TN742
ANALOG
LINE
CO
TRUNK
FACILITY
PART OF
OCTOPUS
CABLE
PART OF
——
SIP
C2
Z210A
C1
Z3A4
355AF
.
ADAPT.
ADAPT.
ADU
PART OF
SIP
——————
——
C2
Z210A
400B2
.
ADAPT.
ADAPT.
——
C7
——————
TRANS.
ADAPT.
CONNECTED
AS OPS
OR CO
FACILITY
CO CABLE
CENTRAL
OFFICE
——————————
I
I
SMDR
TYPICAL
OUTPUT DEVICE
MODEM
OPS OR CO TRUNK
(212 TYPE)
——————————
LEGEND :
C1 -
C2 -
C3 -
OPS -
355AF ADAPTER -
Z3A4 ADU -
248B ADAPTER -
400B2 ADAPTER -
20210 TRANSFORMER -
C7 -
MODULAR CORD (D8W-87) - PEC 2725-07G
OCTOPUS CABLE” (WP90780) - PEC 2720-05P
EIA CROSS OVER CABLE (M7U-87) - PEC 2724-30G
OFF PREMISES STATION
RS-23Z RECEPTACLE TO MODULAR JACK PEC 2750-A25*
EQUIPPED WITH 3 FOOT RECEPTACLE - PEC 2169-004
MODULARIZES 2012D TRANSFORMER
POWER ADAPTER
15-18V AC TRANSFORMER
PEC 21691
MODULAR POWER CORD (D6AP-87)
*
- FURNISHED BY INSTALLER
Figure 2-17. SMDR Output Equipment—Off-Premises Switched Connections
2-76