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Page 52 of 188
PRI installation: NT, 51/51C, 61/61C
553-2901-200 Standard 11.00 August 1996
Figure 16
Single group cabling with Echo Canceller (NT, 61/61C)
J4
J6
RS232
T1
QPC720
PRI Card
(Primary reference)
J3
QCAD124 or
NT8D85xx
QPC414
Note 3
LOOP
J1
J2
J5
D-CH
REF2
REF1
QCAD130 to PRI
or NT8D79xx
QCAD130 to PRI Card
or NT8D79xx
(Secondary reference)
QPC471
Clock
Controller
1
QPC471
Clock
Controller
0
J3
J3
J1
J1
J2
J2
QCAD328A
QPC757
or
NT6D80
J2
QCAD128
or
QCAD133
or
NT8D83xx
DS-1
Cross-Connect
22 AWG ABAM
LD-1
Note 2
Cabinet
I/O Panel
Cabinet
I/O Panel
QCAD133 or
NT8D97Ax
QCAD129 or
NT9J93Ax
RS232 or
NT8D89Ax
T1
RS232
Echo Canceller
Note 1
Central
Office
QCAD130 to PRI
or NT8D79xx
QCAD125 or
NT8D75xx
553-1392
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.
or
NTND26