Yealink T21PE2 User Manual

Call Features
305
Values 1-Calling the Music On Hold server after holding the call
Default 0
[1]
X is the account ID. For T54S/T48S/T48G/T46S/T46G/T29G, X=1-16; for T52S/T42G/T42S, X=1-12; for T41P/T41S/T27G,
X=1-6; for T40P/T40G/T23P/T23G, X=1-3; for T21(P) E2, X=1-2; for T19(P) E2/CP920, X=1.
Call Mute
You can mute the microphone of the active audio device (handset, headset or speakerphone) on Yealink IP phones dur-
ing an active call or when the phone is on the pre-dialing/dialing/calling/ringing screen. The call is automatically
muted when setting up successfully. Muting before a call is answered prevents the other party from hearing local dis-
cussion.
You can activate the mute feature by pressing the MUTE key. Normally, the mute feature is automatically deactivated
when the active call ends. You can use keep mute feature to keep the mute state persisting across the calls.
Note
Muting microphone on the pre-dialing/dialing/calling/ringing screen is not available on T23P/T23G/T21(P) E2 IP
phones when the keep mute feature is disabled.
Topics
Microphone Mute Configuration
Keep Mute
Mute Alert Tone
Microphone Mute Configuration
The following table lists the parameter you can use to configure microphone mute feature.
Parameter features.allow_mute <y0000000000xx>.cfg
Description
It enables or disables the allow mute feature for the IP phone.
Note: For T23P/T23G/T21(P) E2 IP phones, you are allowed to activate the mute feature on the pre-dial-
ing/dialing/calling/ringing screen only if “features.keep_mute.enable” is set to 1 (Enabled).
Permitted
Values
0-Disabled
1-Enabled, you are allowed to mute an active call, or activate the mute feature on the pre-dial-
ing/dialing/calling/ringing screen. (Mute the microphone on the calling screen is only applicable to the
T54S/T52S/T48S/T48G/T46S/T46G/T29G IP phones).
Default 1
Web UI Features->General Information->Allow Mute
Keep Mute
Keep mute, also known as persistent mute, allows you to keep the mute state persisting across calls.
In a call center or meet room, if incoming calls are answered automatically, the callers may hear the local discussion.
Therefore, you can mute the phone in an idle state to prevent the unintended situation. The mute state persists across
calls until you unmute the microphone manually or until the phone restarts.
You can activate the mute feature by pressing the MUTE key in idle/pre-dialing/dialing/ringing/calling/talking state.

Yealink T21PE2 Specifications

General

Brand	Yealink
Model	T21PE2
Category	IP Phone
Language	English