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CHAPTER 12: Diagnostics
159
12.4 System Diagnostics in the Command
Facility
The system administrator may perform all of the
following diagnostics from the Command Facility.
Some of the tests may also be performed at the
LCD/Keypad. Section 13.6, Diagnostics, explains
each of the diagnostic functions that can be
performed with the LCD/Keypad.
The Diagnostic Menu of the Command Facility is
accessed as option 7 from the Command Facility
Main Menu.
R
EMOTE COMPOSITE LOOPBACK
The Remote Composite Loopback tests the
interconnect link between the local Multiserver and
a remote
Multiserver. When initiated, this test
interrupts all user data and feeder-mux ports are
put out of service.
When this option is selected, the following prompt
will appear:
Enter the link channel (port). Press <cr>. The test
will initiate. You should get an alarm message:
This indicates that the link being tested has been
disrupted. The link will remain disrupted until the
test is terminated (see Section 12.2, Terminate
Test).
During the test, the link-indicator LED on the local
Multiserver will be on. (It is usually off.)
NOTE: Tail-circuit channels may not perform
composite loopback tests.
LINK CHANNEL LOOPBACK
When this option is selected, the following menu
appears:
Enter the number of the test you wish to perform.
Press <cr>. The following prompt appears:
COMMAND FACILITY MAIN MENU [node id]
DIAGNOSTICS
7
ENTER LINK CHANNEL # (^X TO ABORT):
[time] [node id] SYNC
LOSS LINK [channel #]
DIAGNOSTICS [node id]
1. REMOTE COMPOSITE LOOPBACK
2. LINK CHANNEL LOOPBACK
3. ASYNC CHANNEL OUTPUT
4. SYNC CHANNEL LOOPBACK
5. VOICE/FAX TESTS
6. INTEGRAL DEVICE TESTS
7. LED TEST
8. MEMORY DUMP
CR - ACCEPT ENTRY
M - MAIN MENU
ENTRY:
LINK CHANNEL LOOPBACK
1. LOCAL ECHO
2. REMOTE ECHO
3. LOCAL FOX
4. REMOTE FOX