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22 ISDN Primary Rate Interface equipment overview
•
RCV CLOCK
•
XMIT CLOCK
•
XMIT READY
•
PRI READY
•
DCH READY
PRI READY and DCH READY are handshake signals.
QPC757 faceplate
The QPC757 DCH, as shown in Figure 3 "QPC757 DCH faceplate layout"
(page 23) has one LED to indicate an active or inactive state and two
external connectors as follows:
•
Port J1 is a standard asynchronous port in LD 48
Note: This connection does not support an Add-on Data Module (ADM)
terminal.
•
Port J2 is the D-Channel Interface port.
Note: A QPC757 vintage C is required if the ISL Revert to Conventional
Signaling feature is configured. The QPC757 vintage D is recommended
for combination ISL/PRI networks using NACD or Network Message
Services and ISL networks using modems.
Nortel Communication Server 1000
ISDN Primary Rate Interface Installation and Commissioning
NN43001-301 02.03 Standard
Release 5.5 7 December 2007
Copyright © 2003-2007, Nortel Networks
.