
Configuring WAN Line Services
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Specify the number of seconds, from 1 to 255, for loopback testing to run, or keep
the default, 0.
Using the BCC
To change the V.54 loopback timer, navigate to the dsucsu prompt (for example,
box; dsucsu/1/1) and type:
loopback-test-timer
variable
For example:
dsucsu/1/1# loopback-test-timer 2
Using Site Manager
See the V.54 Timer parameter on page A-10 for information.
Loopback Test Modes
You can activate DSU/CSU tests using the BCC or Site Manager, as described in
the previous section, “Configuring V.54 Loopback Tests.” The DSU/CSU module
also responds to CCITT V.54 loop-up and loop-down codes.
The following sections describe the supported tests:
Section Page
Digital Loopback (DL)
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Remote Digital Loopback (RL) 4-11
Local Analog Loopback (AL) 4-12
Pattern-2047 BERT Test 4-13
Telco-Activated Loopback 4-13
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