AudioCodes Mediant 800B - 68 Analog Line Testing; FXS Line Testing; FXO Line Testing

Version 7.2 1033 Mediant 800B Gateway & E-SBC
User's Manual 68. Analog Line Testing
68 Analog Line Testing
68.1 FXS Line Testing
You can test FXS telephone lines that are connected to the device's FXS ports. The test is
done per FXS port and FXS country coefficient type - USA (70) or TBR21 (66). The output
of the test displays various line statuses and electrical line measurements. Some of the
supported FXS status and line measurements include:

Hazardous Potential Tests (HPT) - hazardous AC or DC voltage is present on the tip
and ring or both.

Foreign Electromotive Force Tests (FEMT) - foreign voltage is present on the tip, ring
or both

Resistive Fault Tests (RFT) - tip or ring is shorted to ground, or they are shorted to
each other

Receiver Off-hook Tests (ROH) - one or more phones are off hook on phone line
during test.

Ringer Impedance Tests (RIT)

AC/DC line voltage

AC/DC line current

Line resistance

Line capacity

Hook status (on or off)

Message Waiting Indication (MWI) status (on or off)

Ring status (on or off)

Reversal polarity status (on or off)
The FXS line test is currently supported only through CLI.
 To run the FXS line test:
1. Access the VoIP command set:
# configure voip
2. Access the FXS interface command set:
(config-voip)# interface fxs-fxo
3. Type the following command:
(fxs-fxo)# fxs-line-testing < Module/Port > {66|70}
For example, to test FXS port 4 on FXS module 1 with coefficient type USA:
(fxs-fxo)# fxs-line-testing 1/4 70
68.2 FXO Line Testing
The device can test the telephone lines connected to its FXO ports through SNMP using
the SNMP acAnalogFxoLineTestTable table. The tests provide various line measurements.
In addition to the tests, a keep-alive test is also done every 100 msec on each of the
analog ports to detect communication problems with the analog equipment:

Line Current (mA)