Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series IP Phones330Microphone Mute ConfigurationThe following table lists the parameter you can use to enable or disable mute feature.Parameter features.allow_mute .cfgDescriptionIt 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 mutefeature on the pre-dialing/dialing/calling/ringing screen only if“features.keep_mute.enable” is set to 1 (Enabled).PermittedValues0-Disabled1-Enabled, you are allowed to mute an active call, or activate the mute feature on thepre-dialing/dialing/calling/ringing screen. (Mute the microphone on the calling screenis only applicable to the T54S/T52S/T48S/T48G/T46S/T46G/T29G IP phones).Default 1Web UI Features->General Information->Allow MuteKeep MuteKeep mute, also known as persistent mute, allows you to keep the mute state persisting across call.In a call center or meet room, if incoming calls are answered automatically, the callers may hear localdiscussion. Therefore, you can mute the phone in an idle state to prevent the unintended situation. Themute state persists across calls until you unmute the microphone manually or until the phone restarts.You can activate the keep mute feature by pressing the MUTE key inidle/pre-dialing/dialing/ringing/calling/talking state.NoteFor T23P/T23G/T21(P) E2 IP phones, the Cancel key ( ) can be used to cancel actions, reject incoming calls,mute/un-mutes calls or activate the mute feature. If keep mute feature is enabled, the Cancel key can onlybe used as a mute key.TopicKeep Mute ConfigurationKeep Mute ConfigurationThe following table lists the parameter you can use to enable or disable keep mute.Parameter features.keep_mute.enable .cfgDescriptionIt configures the keep mute feature for the IP phone.Note: If it is set to 1 (Enabled), you cannot customize the Cancel key forT23P/T23G/T21(P) E2 IP phones, or the Mute key for
