DID-TRK (DID Trunk)
Issue 4 May 2002
10-537 555-233-123
j. Digit detection – Co is starting new rotary dial digit within 150 msec of
previous digit.
1 – Verify trunk administered interdigit timing parameters.
2 – Refer problem to CO.
k. Loop current active – CO not releasing trunk after PBX disconnect. Occurs
when the PBX end drops first and the CO does not release the trunk within
four minutes.
1 – Verify the interface to the network with a hand telephone set. If calls are
placed correctly, then refer problem to the CO.
2 – If unable to place calls or this equipment is not available, check the
status on port using the status trunk command. If active but not
connected, disconnect bridging clips at the network interface. Check status
on the trunk. If trunk went idle, then replace clips. If trunk is still active but
unable to place calls, refer problem to the CO.
l. Late CO trunk release – This event only happens after the occurrence of
Error Type 513. The CO released the trunk four minutes after the PBX
dropped the call. This event decrements the severity (error count) of Error
Type 513, or may mean the problem related to Error Type 513 has been
fixed.
1 – Verify that Error Type 513 does not occur again. Refer to Error 513.
m. Incomplete Dial timer expired. This error applies only to the TN459.
Problem with incoming dialing stream. Refer problem to the CO.
System Technician-Demanded Tests: Descriptions
and Error Codes
Always investigate tests in the order presented in the table below when inspecting
errors in the system. By clearing error codes associated with the DID-TRK Loop
Around and Conference Circuit Test, for example, you may also clear errors
generated from subsequent tests in the testing sequence.
Order of Investigation
Short Test
Sequence
Long Test
Sequence D/ND
1
1 D = Destructive; ND = Nondestructive
NPE Crosstalk Test (#6) X ND
Port Diagnostic Test (#35) X X ND
Loop Around and Conference Circuit Test (#33) X ND
Port Audit Update Test (#36) X X ND
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