Nortel Communication Server 1000S Installation And Configuration Manual page 134

Page 134 of 394
Figure 44
NT8D72 (Single Group cabling) for Half and Single Group systems, with an echo canceller
NT8D72AA
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
NT8D79AA
J1
NT8D79AA
J2
QCAD328A or
NTND26
J5
QCAD124
J3
QCAD128 or
QCAD133
J4
Cabinet
I/O Panel
QCAD129
J6
Cabinet
I/O Panel
September 2004
NT8D79AA
J1
QPC775
Clock
J2
Controller
J3
J1
QPC775
Clock
J2
Controller
J3
QCAD125
QPC757
J2
NT6D80
QPC414
J2
(Note 3)
Echo Canceller
QCAD133
T1
(Note 1)
RS232
RS232
0
1
or
22 AWG ABAM
DS-1
Cross-Connect
Terminal
LD-1
(Note 2)
C e n tr a l
O f f i c e
553-1392