Mitel 5212/5224 - Headset Operation

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Headset Operation
To enable Headset Operation:
z
Press the Headset feature key.
To answer a call (when Auto Answer is disabled):
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Press the flashing line key.
To hang up:
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Press ( CANCEL ).
To mute your headset microphone:
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Press the (MUTE) key. The light turns ON.
To turn mute off and return to the conversation:
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Press the (MUTE) key. The light turns OFF.