Nortel Communication Server 1000S Installation And Configuration Manual page 133

Figure 43
NT8D72 (Single Group cabling) for Half and Single Group systems, without an echo canceller
NT8D72AA
PRI Card
(Primary reference)
REF1
REF2
D-CH
LOOP
2Mb
stream
RS-232
Note 1: Maximum cable distance from PRI card to cross connect is 200 m (655 ft) .
Note 2: Maximum cable distance from PRI card to repeater is 229 m (750 ft).
NT8D72 and QPC720 PRI card installation
NT8D79AA
NT8D79AA
J1
NT8D79AA
J2
QCAD328A
J5
NT8D85AB
J3
NT8D7207
J4
Cabinet
I/O Panel
(Note 1)
J6
No connection
ISDN Primary Rate Interface
NT8D79AA to PRI Card
(Secondary reference)
NT8D79AA
J1
J2
J3
J1
J2
J3
QCAD125
J2
J2
NT8D7205
Cross-Connect
Page 133 of 394
QPC775
Clock
Controller
0
QPC775
Clock
Controller
1
QPC757
DCHI
Network
Card
repeater
(Note 2)
DS-1
Terminal
553-1391
Installation and Configuration