Nortel DMS-250 - Verification

D-channel handler 3-3
Digital Switching Systems DMS-250 ISDN Reference Manual MWC14 (CSP14)
Loading the D-channel handler from the MAP terminal
The ISP is loaded when the DTCI is loaded.
Returning the D-channel handler to service
To return the DCH to service, perform the following steps.
1 At the PRADCH level of the MAP terminal, enter the POST GD (group
D-channel) or POST D <ckt #> command to identify the DCH; use the
common language location identifier to return to service (RTS).
2 Apply the RTS command to the POST DCH.
If DCH is busy, ensure a BSY command puts the DCH in MB state
before issuing the RTS command.
DCH goes to in-service state.
Checking the D-channel handler load name
It is not necessary to check the DCH load name because the DCH is loaded
when the DTCI is loaded.
Verification
Verification includes running internal continuity tests, read-only memory
tests, and an external continuity test.
Running internal continuity tests
To run a continuity test:
1 Go to the PRADCH level of the MAP terminal. The full path name is:
MAPCI;MTC;TRKS;TTP;PRADCH
2 Enter the POST GD command to identify the DCH to test.
3 Enter the CONT command with option INT to run the internal continuity
test.
Running the read-only memory tests
This does not apply to the DTCI DCH.
Running the external continuity test
The external continuity test checks the end-to-end continuity of the
D-channel. The test path runs from the DMS-250 switch DCH to the far-end
PBX. The loopback at the far end must be set by commands at the far end.