User Manual

Cisco High-Density Analog Voice and Fax Network Module

Configuration Tasks

Cisco IOS Release 12.2(2)XT and 12.2(8)T

Fax/Voice Mode Tests

The test voice port switch fax command forces a voice port into fax mode for testing. After you enter

this command, you can use the show voice call or show voice call summary command to check whether

the voice port is able to operate in fax mode. If no fax data is detected by the voice port, the voice port

remains in fax mode for 30 seconds and then reverts automatically to voice mode.

The disable keyword ends the forced mode switch; however, the fax mode ends automatically after

30 seconds. The disable keyword is available only while the voice port is in fax mode.

To force a voice port into fax mode and return it to voice mode, use the following commands in

privileged EXEC mode:

Command Purpose

Step 1

Router# test voice port slot/subunit/port switch fax

Identifies the voice port you want to test. Enter the

keyword fax to force the voice port into fax mode.

Step 2

Router# test voice port slot/subunit/port switch

disable

Identifies the voice port on which you want to end

the test. Enter the keyword disable to return the

voice port to voice mode.