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PRI installation: NT, 51/51C, 61/61C
553-2901-200 Standard 11.00 August 1996
Figure 14
Half group cabling with Echo Canceller
J1
J2
J3
J4
J5
J6
QCAD328A or NTND26
QPC720
PRI Card
(Primary reference)
QPC757
or
NT6D80
QPC414
Note 3
RS232
T1
LOOP
D-CH
REF2
REF1
QCAD130
or NT8D79xx
QCAD130 or NT8D79xx to
PRI Card—Secondary Reference
QPC471
Clock
Controller
0
J3
J1
J2
J2
QCAD128 or
QCAD133 or
NT8D83xx
DS-1
Cross-Connect
22 AWG ABAM
Cabinet
I/O Panel
Cabinet
I/O Panel
QCAD133 or
NT8D97Ax
QCAD129 or
NT9J93xx
RS232 or
NT8D89Ax
T1
RS232
Echo Canceller
Note 1
LD-1
Note 2
Central
Office
QCAD124 or NT8D85xx
553-1390
Note 1: Maximum cable distance from PRI card to DS-1 cross connect is 655 ft.
Note 2: Maximum cable distance from PRI card to LD-1 is 750 ft.
Note 3: QPC720 does not interface with NT8D04 Superloop Network Card.
No connection
No connection