BASIC CALL FEATURESPlacing a CallAnswering a CallEnding a CallCall Mute and Un-muteRedialCall Hold and ResumeTo place a call on hold:Using the handset:Using the speakerphone:Using the headset:Using the handset:Using the speakerphone:Using the headset:Using the handset:Using the speakerphone:Using the headset:1. With the handset on-hook, press .1. Pick up the handset.2. Enter the number, and then press the Send soft key.1. With the headset connected, press to activate the headset mode.2. Enter the number, and then press the Send soft key.Note: During a call, you can alternate between headset, hands-free speakerphone and handset modes bypressing the HEADSET key or the Speakerphone key or picking up the handset. Headset mode requires aheadset connected.Note: You can ignore an incoming call by pressing the Reject soft key.2. Enter the number, and then press the Send soft key.Pick up the handset.Press .Hang up the handset or press the Cancel soft key.Press .Press or the Cancel soft key.Press the Cancel soft key.SIP-T21P & SIP-T21 Quick Reference GuidePress to enter the Placed Calls list, press or to select the desired entry, and thenpress or the Send soft key.Press twice when the phone is idle to dial out the last dialed number.To resume the call, do one of the following:Press to mute the microphone during a call.Press again to un-mute the call.If there is only one call on hold, press the Resume soft key.Press the Hold soft key during an active call.