Nortel Communication Server 1000S Installation And Configuration Manual page 132

Page 132 of 394
Figure 42
NT8D72 (Half Group cabling) for Half and Single Group systems, with an echo canceller
NT8D72
PRI Card
(Primary
reference)
REF1
REF2
D-CH
LOOP
T1
RS232
Note 1: Maximum cable distance from PRI card to DS-1 cross connect is 200 m (655 ft).
Note 2: Maximum cable distance from PRI card to LD-1 is 229 m (750 ft).
Note 3: QPC720 does not interface with NT8D04 Superloop Network Card.
553-3001-201 Standard 2.00
NT8D72 and QPC720 PRI card installation
NT8D79AA to PRI Card
(Secondary reference)
NT8D79AA
J1
No connection
J2 No connection
NTND26
J5
QCAD124
J3
QCAD128 or
QCAD133
J4
Cabinet
I/O Panel
QCAD129
J6
Cabinet
I/O Panel
September 2004
J1
QPC471
Clock
J2
Controller
0
J3
NT6D80
J2
QPC414
J2
(Note 3)
Echo Canceller
QCAD133
T1
(Note 1)
RS232
RS232
22 AWG ABAM
LD-1
(Note 2)
DS-1
Cross-Connect
Terminal
C e n t r a l
O f f i c e
553-1390