To Next Page

To Previous Page

CHAPTER64 Analog Line Testing

Mediant 1000 Gateway & E-SBC | User's Manual

64 Analog Line Testing

This section describes analog line testing.

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)

■ Line Voltage (V)

■ Hook (0 = on-hook; 1 = off-hook)

■ Ring (0 - Off; 1 - On)

■ Line Connected (0 = Disconnected; 1 = Connected)

■ Polarity state (0 = Normal; 1 = Reversed, 2 = N\A)

■ Line polarity (0 = Positive; 1 = Negative)

■ Message Waiting Indication (0 = Off; 1 = On)

You can also view the above information through the Web interface (see Viewing Port Information).

Analog line testing is traffic affecting and therefore, do the test only for monitoring and

when there are no active calls in progress.

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.

- 1064 -

AudioCodes E-SBC User Manual

Questions and Answers: