22IP Phone 1200 SIP User GuideMute keyPress the Mute key to listen to the receiving party withouttransmitting audio. Press the Mute key again to return totwo-way conversation. The Mute LED indicator on the Mutekey flashes to indicate that the microphone is muted. Themicrophone remains muted for your current call and allother calls until you press the Mute key again to turn themicrophone on. The Mute key applies to handsfree,handset, and headset microphones.Handsfree key Press the Handsfree key to activate handsfree. TheHandsfree LED Indicator on the Handsfree key lights toindicate when handsfree is active.For information on how to use the handsfree mode, refer toHands free.Goodbye key This key is used to return the phone to its idle on-hookstate. Pressing this key terminates an active call.Applications key(Intercom)This key is used to make an Intercom call. Press theapplication key before dialing the number to place a one-way Intercom call instead of a regular two-way call. Whenreceiving an Intercom call, press this key to turn the call intoa regular call with two-way audio.Headset key Press the Headset key to answer a call using the headsetor to switch a call from the handset or handsfree to theheadset. The Headset LED Indicator on the Headset keylights to indicate that the headset is in use.Hold key When in a call press the Hold key to put the other phone onhold. Press it again to deactivate hold and retrieve the call.