363-206-285 Detailed Level Procedure: DLP-519
Issue 2, February 2000 Page 1 of 2
DDM-2000 OC-3 MULTIPLEXER
Test Protection Switching Function
1. Is a CIT available?
If YES, then continue with Step 2.
If NO, then proceed to Step 7.
2. To test for a switch to protection using a CIT, connect the CIT to the CIT
connector on the User Panel. Enter the rtrv-state-eqpt: command.
The terminal will display the current protection status.
3. Use one of the switch commands (for example,
switch-ls:address:pri=manual or
switch-fn:address:pri=manual to perform a switch.
4. Enter the rtrv-state: command to verify the switch was done.
5. Use the switch-( ):address:pri=reset command to reset switch.
6. STOP. YOU HAVE COMPLETED THIS PROCEDURE.
7.
NOTE:
The alarm delay is provisionable from 0 to 30 seconds. This procedure
assumes the alarm delay is set for the default of 2 seconds.
To test a low-speed switch to protection, unplug one of the DS1/DS1PM circuit
packs, if installed.
Response: NE ACTY LED on User Panel lights. MN LED lights after 2
seconds.
8. Reseat the circuit pack that was removed.
Response: All LEDs go OFF after 2 seconds.
9. Repeat Step 7 for each equipped muldem.
10. To test a high-speed switch to protection, unplug a MXRVO/STS1E circuit pack
with a lighted ACTIVE LED.
Response: The green ACTIVE LED on the companion circuit pack
lights. The NE ACTY LED on User Panel lights. The MN
alarm lights after 2 seconds.
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