AudioCodes MP-112R - 7.3 MediaPack Self-Testing

User's Manual 150 Document #: LTRT-71405
MediaPack Series
7.3 MediaPack Self-Testing
The MediaPack features a mechanism that performs tests on the telephone lines
connected to FXS and FXO ports. These tests provide various line measurements. Line
testing is executed via SNMP only (using the acAnalogFxoLineTestTable SNMP table for
FXO and the acAnalogFxsLineTestTable SNMP table for FXS).
In addition to those tests (which are listed below), a keep alive test is also being performed
every 100msec Vs each of the analog ports, in order to detect communication problems
with the analog device and to detect any over-heating problems (only in case of FXS
ports).
Note: The line testing mechanism must only be used for monitoring and never
when there are calls in progress.
7.3.1 FXS Line Testing
The following line tests are available on FXS gateways:

Hardware revision number

Temperature (above or below limit, only if in case a thermometer is installed)

Hook state

Coefficients check sum

Message waiting indication status

Ring state

Reversal polarity state
For MP-124, you can also use the following Command Shell commands to view line status
and electrical measurements per FXS port or phone number:
LineTesting Port <port number> <test type>
- or -
LineTesting Term <TermName> <test type>
Where <test type> can be one of the following values:

0 = Line status, which includes the following:
• Hook status – on-hook (0) or off-hook (1)
• Message Waiting Indication (MWI) – off (0) or on (1)
• Ring – off (0) or on (1)
• Reversal polarity – off (0) or on (1)

Line electrical measurements:
• 1 = DC Voltage Tip-Ring [V]
• 2 = DC Voltage Tip-Ground [V]
• 3 = DC Voltage Ring-Ground [V]
• 4 = AC Voltage Transmit(Tel2IP) [dbm]
• 5 = AC Voltage Receive (IP2Tel) [dbm]
• 6 = AC Voltage Transmit & Receive [dbm]
• 7 = Current [mA]
• 8 = Resistance Tip-Ring [Ohm]
• 9 = Resistance Tip-Ground [Ohm]