Yealink SIP-T48G Administrator's Manual page 414

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
Details of Configuration Parameters:
features.play_local_dtmf_tone_enable
Description:
Enables or disables the IP phone to play a local DTMF tone.
0-Disabled
1-Enabled
If it is set to 1 (Enabled), you can hear the DTMF tone when pressing the IP phone's
keypad during a call.
Web User Interface:
Features->General Information->Play Local DTMF Tone
Phone User Interface:
None
To configure play local DTMF tone via web user interface:
1. Click on Features->General Information.
2. Select the desired value from the pull-down list of Play Local DTMF Tone.
3. Click Confirm to accept the change.
You can mute the microphone of the active audio device during an active call, and then
394
Parameters Permitted Values Default
0 or 1 1