Tecdesk 3500 - Left directional button; Right directional button; Cancel button; Headset button

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Button Function
Left directional button [
] In Standby mode press to enter into the SMS menu. During an active call press to decrease the
volume on the handset or speaker.
Right directional button [
] In Standby mode press to enter into the Proles menu. During an active call, press to increase the
volume on the handset or speaker.
Cancel button [ C ] Pressing will delete an incorrect input number entry or text, when typing into the dial pad.
Headset button [
] Connect the headset and press to transfer the call from receiver to headset mode.
Silence mode button [
] Press during an active call to mute/silent your outgoing sound.
Speed dial button [M1 - M8] Press for the Speed dial functions. Please refer to the “Speed dialing” section of the manual for
further information.
Hold button During an active call, press to switch between caller 1 and caller 2. During an active call, you can
make another call. Press to put caller 1 on hold and dial the number of caller 2.
Transfer button During 2 active calls, one active and other on hold, press to make a transfer between both calls.
Can make a “Blind Transfer”, pressing when you are making a second call.