DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Maintenance Object Repair Procedures
9-1698TBRI-TRK (TN2185 ISDN Trunk-Side BRI)
9
If a test call is running when sc heduled maintenance star ts, the green LED is
turned off. To determine if a test call is still running, use the list isdn-testcall and
status isdn-testcall commands. A lit yellow LED on the Maintenanc e/Test circuit
pack also indic ates that a test call is running.
There are two methods available to place an o utgoing ISDN Trunk-side BRI trunk
test call:
1. The test call connection is estab lished over the TDM Bus of the transmit
and receive sides of the ISDN Trunk-side BRI trunk to a data c hannel. This
method is selected when n o Maintenance/Test circuit pack resides in the
system.
2. The test call connection is estab lished over the TDM Bus of the transmit
and receive sides of the ISDN Trunk-side BRI trunk to a digital trunk testing
port on the Maintenance/Test circuit pac k. The Maintenance/Test Digital
Port generates a pseudo bit stream.
A test is run periodically to c heck if the call is hung. If so, it g racefully tears down
the call to release the resources.
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 UUCsspp long [repeat number]
■test port port-location long [repeat number]
Whenever a circuit translates to an ISDN Trunk-side BRI trunk during a Long Test
Sequence, an outgoing test c all is invoked, and the d uration of the test call is 8.6
seconds. Once the test call completes, the b it error rate is retrieved from the
Maintenance/Test Digital Port. A bit error rate greater than zero is repor ted as a
failure to the Manager I terminal (MGRI). A failure indicates the ne ed to run
further diagnostics.
If no Maintenance/Test circuit pack exists, the ou tgoing ISDN Trunk-side BRI
trunk test call is established over a high-speed d ata channel on the Network
Control (NETCON) circuit pack (DATA-BD).
Asynchronous Commands
NOTE:
Only one trunk can be tested in a given port network, until the test call is
canceled or com p letes.