System information

Configuring the Voice Settings

Line1 Settings (PHONE Port)

Cisco SPA232D Administration Guide 114

DTMF Process

AV T

To use the DTMF process AVT feature, select yes.

Otherwise, select no.

Default setting: yes

FAX Process NSE To use the fax process NSE feature, select yes. Otherwise,

select no.

Default setting: yes

DTMF Tx Method Select the method to transmit DTMF signals to the far end:

InBand, AVT, INFO, or Auto. InBand sends DTMF by using

the audio path. AVT sends DTMF as AVT events. INFO

uses the SIP INFO method. Auto uses InBand or AVT

based on the outcome of codec negotiation.

Default setting: Auto

FAX Disable ECAN If enabled, this feature automatically disables the echo

canceller when a fax tone is detected. To use this feature,

select yes. Otherwise, select no.

Default setting: no

DTMF Tx Mode DTMF Detection Tx Mode is available for SIP information

and AVT. Options are: Strict or Normal.

Default setting: Strict for which the following are true:

• A DTMF digit requires an extra hold time after

detection.

• The DTMF level threshold is raised to -20 dBm.

The minimum and maximum duration thresholds are:

• strict mode for AVT: 70 ms

• normal mode for AVT: 40 ms

• strict mode for SIP info: 90 ms

• normal mode for SIP info: 50 ms

Field Description