PRI installation: NT, 51/51C, 61/61C
Page 51 of 188
ISDN PRI Installation
Figure 15
Single group cabling without Echo Canceller (NT, 61/61C)
QCAD130 to PRI or NT8D83xx
to PRI Card
(Secondary reference)
QPC414
Note 3
J4
J6
RS232
T1
QPC720
PRI Card
(Primary reference)
J3
QCAD124 or
NT8D85xx
LOOP
J1
J2
J5
D-Channel
REF2
REF1
QCAD130 to PRI
or NT8D79xx
QPC471
Clock
Controller
1
QPC471
Clock
Controller
0
J3
J3
J1
J1
J2
J2
QCAD328A
QPC757
or
NT6D80
J2
QCAD130 to PRI
or NT8D79xx
QCAD125 or
NT8D75xx
QCAD128
or
QCAD133
or
NT8D83xx
Cabinet
I/O Panel
QCAD133 or
NT8D97Ax
DS-1
Cross-Connect
LD-1
Note 2
Central
Office
Note 1
No connection
553-1391
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