Common Fxs/Fxo Port Configuration Commands; Configure Voice-Port Battery-Reversal - Avaya 2330 Reference Manual

SIP Media Gateway commands
summary
Example
AG# show voice port summary

Common FXS/FXO port configuration commands

configure voice-port battery-reversal

Use this command to configure battery polarity reversal on an FXS or FXO port.
By default, battery reversal is enabled
FXS ports normally reverse battery upon call connection. If an FXS port is connected to an
FXO port that does not support battery reversal detection, you can disable battery reversal
(using the no battery-reversal command) on the FXS port to prevent unexpected
behavior.
FXO ports in loop-start mode normally disconnect calls when they detect a second battery
reversal (back to normal). You can use the no battery-reversal command on FXO ports
to disable this action.
If an FXO voice port in loop-start mode is connected to the PSTN and supports battery reversal,
you can configure answer supervision using the battery-reversal answer command.
This configures the FXO voice port to detect when a call is answered in order to provide correct
billing information.
The answer option is supported on FXS DID ports as well.
Syntax
[no] battery-reversal [answer]
Table 401: Variable definitions
[answer]
[no]
364 Command Line Reference
Variable
Variable
Comments? infodev@avaya.com
Value
valid when ISDN PRI is configured on a T1
port (<d-channel> = 23).
Displays a summary of all ports.
Value
Configures an FXO port to support answer
supervision by detection of battery reversal.
Disables battery reversal.
August 2013