363-206-204
Operational Tests
Issue 9 October 1998
10-9
21, 22, 24 or 27 Type OLIU
1. Perform the following for Releases 7, 9, 11 and 13. For Releases 6 and 8
perform the following if both of the OLIUs of a pair are active (each OLIU
has its green LED lighted).
a. Unseat one OLIU. On the user panel the MN and NE ACTY alarms
should light.
b. Reseat the OLIU. For Releases 6 and 8 the ACTIVE LED on the
reseated OLIU should remain off.
For Releases 7, 9, 11 and 13 traffic is now received on the OLIU that
was not removed, but the active LED on both will be lit. The FAULT
LED on the reseated OLIU will light for several seconds then extin-
guish. On the user panel the MN and NE ACTY alarms should extin-
guish.
2. For Release 6 or 8, the DDM-2000 OC-3 should be configured so that only
one OLIU is active.
3. For Releases 6 and 8, verify the status of the OLIUs by issuing the com-
mand rtrv-state (RETRIEVE STATE). For Releases 7, 9, 11 and 13,
verify the state of VT paths by issuing the command rtrv-state-path
(RETRIEVE STATE PATH).
4. For Releases 6, and 8 issue the command switch-line
(SWITCH LINE). At the address prompt, enter main if testing OLIU switch-
ing in a main slot or a, b, or c if testing OLIU switching in a function slot.
The ACTIVE LEDs should be lighted on both of the OLIUs of a pair.
NOTE
:
Both of the OLIUs of a pair will be active since the switch-line com-
mand only switches the OLIU receiver, not the transmitter.
For Releases 7, 9, 11 and 13 issue the command switch-path-vt1
(SWITCH PATH VT1). At the address prompt, enter m1-all or m2-all
depending on which one is currently receiving. At the priority prompt, enter
manual.
5. For Releases 6 and 8 verify the status of the OLIUs by issuing the com-
mand rtrv-state (RETRIEVE STATE). For Releases 7, 9, 11 and 13 ver-
ify the status of the OLIUs by issuing the command rtrv-state-path
(RETRIEVE STATE PATH).
6. For Releases 6 and 8, issue the command switch-line (SWITCH LINE).
Enter manual at the priority prompt. The ACTIVE LED should be lighted on
only one OLIU. For Releases 7, 9, 11 and 13 this does not apply.
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