Maintenance Object Repair Procedures
555-233-123
10-998 Issue 4 May 2002
Figure 10-60. ISDN-PRI Outgoing Test Call
Synchronous Commands
You can demand a synchronous outgoing test call by using the following
maintenance commands:
■ test trunk trunk-group-no/member-no long [repeat number]
■ test board board-location long [repeat number]
■ test port port-location long [repeat number]
Whenever a circuit translates to an ISDN-PRI trunk during a Long Test Sequence,
an outgoing test call is invoked. If the B-channel is unrestricted (B8ZS or HDB3)
the default duration of the test call is 8.6 seconds. Otherwise, if the B-channel is
restricted (ZCS) the default duration of the test call is 9.4 seconds. Once the test
call completes, the bit error rate is retrieved from the Maintenance/Test Digital
Port. A bit error rate greater than zero is reported as a failure to the Manager I
terminal (MGRI). A failure indicates the need to run further diagnostics, such as
the test isdn-testcall command.
If no Maintenance/Test circuit pack exists, the outgoing ISDN-PRI test call is
established over a high speed data channel on the Network Control (NETCON)
circuit pack (DATA-BD).
PI (TN765)
or
PACCON
(TN778)
NETCON SPE
D-channel Setup
B-channel
B-channel
TDM BUS
M/T
TN7771B
DS1/UDS1
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