Originating Trunk Group - Cisco BTS 10200 Troubleshooting Manual

ISDN Network Loopback Test

Originating Trunk Group

The ISDN NLB feature uses a shared test trunk group, where the type of test is specified by the
test-prefix. BTS 10200 allows a test trunk group to be associated with a test dial plan. The test trunk
group is an ISDN PRI trunk. Incoming calls from the network on an ISDN PRI trunk are analyzed
according to a preconfigured test dial plan. The following is the format of dialed digits for these
incoming test calls.
Called party number format:
<Test-prefix><Test-data>
Where:
•
•
Add a trunk-group for the testing device as an ISDN PRI trunk-group if it does not already exist.
Step 1
trunk-grp::tg-type=isdn;
Configure the test dial plan destination with the exact type of test call.
Step 2
Configure a main subscriber ID for the testing trunk group if necessary.
Step 3
Call Agent Configuration Table
The system defaults for the Call Agent Configuration (ca-config) table may require changing, based on
the needs of the test.
Change service affecting for either NCT or NLB testing. The default is Y.
Step 1
change ca-config::nct-test-service-affecting=n;
change ca-config::nlb-test-service-affecting=n;
Define the number of digits for the trunk group and CICs that are under test. The defaults for both are 4.
Step 2
change ca-config::test-trunk-grp-digits=<x>;
change ca-config::test-trunk-member-digits=<x>;
Dial Plan
If the nanp-dial-plan token in the Dial Plan Profile table is set to Y, then the nature of address (NOA) in
the Dial Plan table cannot be UNKNOWN. The NOA can be set to NATIONAL. The first digit of the
prefix cannot be 1—use any number between 2–9.
Cisco BTS 10200 Softswitch Troubleshooting Guide, Release 5.0.x
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<Test-prefix> is a string of digits that denote the test category. Operator must configure the
definition (recommended as a pattern of 1 to 6 digits—but the first digit cannot be "1", the BTS
10200 performs the longest match) of the test prefix and its length.
<Test-data> is a string that depends on the test-prefix content. The following steps configure the
originating trunk group:
Y—Subscriber under test cannot make or receive calls.
–
N—Subscriber under test can make or receive calls; test calls are dropped.
–
Chapter 15 Diagnostic Tests
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