AudioCodes Media Pack MP-11x, User Manual

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User's Manual 460 Document #: LTRT-65432
MP-11x & MP-124
•
15 = AC Voltage Tip-Ground [V]
•
16 = AC Voltage Ring-Ground [V]
•
17 = All the above
Notes:
•
Use the Analog Line testing mechanism only for monitoring and never when there
are calls in progress.
•
For MP-118, the line status and electrical measurement tests are supported only if
they are done when the grounding reference is relative to the device. However, if
the grounding is done directly to the earth, the tests are supported only on specific
hardware models. For more information, please contact your AudioCodes' sales
representative.
•
Line electrical measurements are supported only on certain MP-124 hardware
assemblies. For more information, contact your AudioCodes' sales representative.
41.2 FXO Line Testing
The device can test the telephone lines connected to its FXO ports, using the SNMP
acAnalogFxoLineTestTable table. These tests provide various line measurements. In
addition to these tests (detailed below), 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)
Note: Use the Analog Line testing mechanism only for monitoring and never when
there are calls in progress.