Nortel Communication Server 1000S Installation And Configuration Manual page 137

Figure 47
QPC720 (Half Group cabling) for Multi Group systems without an echo canceller
QPC720
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).
Note 3: QPC720 does not interface with NT8D04 Superloop Network Card.
NT8D72 and QPC720 PRI card installation
NT8D79AA or QCAD130 to PRI Card
NT8D79AA
or QCAD130
J1
J2 No connection
QCAD328A to QPC757
J5
NTND26 to MSDL
NT8D85AB
J3
J4
Cabinet
I/O Panel
(Note 1)
J6
No connection
ISDN Primary Rate Interface
(Secondary reference)
J1
J2
No connection
J3
J2
J2
NT8D7205
DS-1
Cross-Connect
Terminal
Page 137 of 394
QPC471
Clock
Controller
0
QPC757
DCHI
NT6D80
MSDL
Network
Card
(Note 3)
repeater
(Note 2)
553-1389.1
Installation and Configuration