Handling Calls with a Headset (no Feature Control Switch):

To answer a call (when Auto Answer is disabled):

Press the flashing Line Select key. To hang up:

Press the Hang-Upsoftkey.

Handling Calls with a Headset with Feature Control Switch:

To answer a call (when Auto Answer is disabled):

Quickly press and release the Control Switch.

To mute the headset microphone (Headset with Feature Control Switch only):

Press and hold the Control Switch. To hang up:

Quickly press and release the Control Switch.

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Mitel 4150 manual Handling Calls with a Headset no Feature Control Switch