Alvarion BreezeACCESS II, Системное руководство

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Menus and Parameters
2-119
BreezeACCESS Version 4.5 System Manual
the digital signal.
Payload loopback occurs when voice coming from network is fed back to
the network. The loop is performed in the SLIC, on the digital side,
before conversion to an analog signal.
The available electrical Line tests are:
a. Interruptive Line Test
b. Non-interruptive line tests
Some of the tests are canceled automatically if electrical conditions are
not satisfied. For example, if there is a high foreign voltage, none of the
other tests can be performed (in order to avoid damage to the card). The
results take on values that indicate this situation: for example, Leakage
Resistance = -1.
The Line Testing Feature is supported only by units using a Voice card
with HW revision D and higher.
!
Loopback – enables the initiation and termination of a loopback
test. A loopback test is continuous once it is initiated, and must be
terminated explicitly by selecting the
No Loopbacks option (or after
reset).
The available options are as follows:
"
No Loopback (used to terminate a loopback state)
"
Local (User Side) loopback
"
Payload (Network Side) Loopback.
! Non Interruptive Line Test – enables the initiation of a
non-interruptive line test and viewing the results of the previous
test.
The test results include the following parameters:
"
Line State Test Result: Result Not
available/On-Hook/Off-Hook/Short Circuit
" Apparent T-R Resistance (Ohm)
" Line DC Voltage (V)
" Line AC Voltage (V)
!
Full Line Test (Interruptive)– enables the initiation of an
interruptive line test and viewing the results of the previous test.
There are two options for running the test:
Run and Force . Upon
selecting the Run option, the test is executed only if the line is not
busy. The Force option is used to run the test independant of the
line status.
The test results include the following parameters:
"
Foreign DC Tip voltage (mV)
"
Foreign DC Ring voltage (mV)
"
Foreign AC Tip voltage (mV)