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10-2 Service verification
In the T100 and T102 testline test descriptions, the terms on-hook and
off-hook are used. These terms are not applicable for ISDN PRI trunks. A
diagram of the TL100 configuration is shown in Figure 10-1.
Figure 10-1
TL100 configuration
T100 test
To execute a T100 or T102 test and monitor levels of the MAP terminal, you
can use TST (TeST) commands from the trunk test position (TTP).
If you know the version of the distant office testline, you can perform that
version directly, and a 2 s delay per trunk is not required. Otherwise,
perform the T100 test.
When the T100 testline test is performed, a 2 s time-out is used to check for
a milliwatt tone. If a milliwatt tone is detected, the N100 version of the test
is executed. If no tone is detected, the S100 version of the test is initiated.
N100 test
The N100 test includes a milliwatt test and can be used for far-to-near loss
measurements.
The operating sequence of the N100 version of the 100 testline is as follows:
297-2521-106 Standard 23.01 March 2001
Switch
TTT
network
1
Connect level meter of trunk test terminator (TTT) to outgoing trunk.
Outpulse test code to terminating office that responds with off-hook
when milliwatt generator is connected.
Milliwatt tone is received from the far-end office and measured by level
meter.
OG
trunk
IC
trunk
under
test
Termi-
Switch
nating
network
100 test
2
line
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