Nortel Communication Server 1000S Installation And Configuration Manual page 39

Figure 7
QPC720 PRI faceplate layout
Q
P
C
7
2
0
J1
J2
J3
ISDN Primary Rate Interface equipment overview
DIS: Card is disabled
ACT: Card is enabled
RED: Red alarm (local alarm)-card or transmission fault
YEL: Yellow alarm (remote alarm)-far end fault
LBK: Loop -back test - see PRI tests
RCV MON: Access point to regenerated DS-1
RCV
XMT MON: Access pont to DS-1 signal being transmitted
XMT
J1 and J2: Recovered reference clocks derived from and
J4
J4: T1 interface to the external digital carrier
J5
J5: D-channel interface (DCHI) cable connection
to QPC757 or MSDL card
J3: Network loop cable connector to QPC414 Network Card
J6
J6: RS-232 interface to echo canceller (satellite
transmission only)
Table 4
QPC720 PRI external connectors
Faceplate destination
J1
J2
J3
ISDN Primary Rate Interface
signal from the external network
received (RCV) DS-1 signal
Type
9-pin female, D-connector
9-pin female, D-connector
36-pin connector
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Installation and Configuration