Yealink SIP-T21 E2

Configuring Basic Features
541
Details of Configuration Parameter:
Parameter
Permitted Values
Default
features.allow_mute
0 or 1
1
Description:
Enables or disables the allow mute feature for the IP phone.
0-Disabled
1-Enabled
If it is set to 1 (Enabled), you are allowed to mute an active call, or activate the mute feature
on the pre-dialing/dialing/calling/ringing screen (Mute the microphone on the calling
screen is only applicable to the SIP-T54S/T52S/T48G/T48S/T46G/T46S/T29G IP phones).
Note: For SIP-T23P/T23G/T21(P) E2 IP phones, you are allowed to activate the mute feature
on the pre-dialing/dialing/calling/ringing screen only if the value of the parameter
“features.keep_mute.enable” is set to 1 (Enabled).
Web User Interface:
Features->General Information->Allow Mute
Phone User Interface:
None
To configure allow mute via web user interface:
1. Click on Features->General Information.
2. Select the desired value from the pull-down list of Allow Mute.
3. Click Confirm to accept the change.