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PRI installation: ST, STE, 21, 21E
553-2901-200 Standard 11.00 August 1996
Figure 8
ST, STE, 21, 21E 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