Mitel 53xx Headset/Handset Toggle

You can program Mitel 53xx series phones with a PMK that toggles a plugged-in headset on and off. When you program a headset key, it appears on your Mitel phones. With both a handset and a headset connected to a Mitel phone, you can toggle between devices. When PFK is lit, the headset is the active device. When the headset is connected to the phone, the headset icon appears in the top left corner.

Supported models include

Unsupported phones briefly display "Unsupported function", similar to other messages.

Use the Line key or Answer key to answer calls. When making a call, the line key enables the line and you can hear a dial tone through the headset. While on a call, the active line key does nothing. The speaker key and handset are inactive when this feature is active.

When you are receiving a call, clicking the X key does nothing: the phone keeps ringing. When you are making a call, clicking the X key hangs up. When you are on a call, clicking the X key ends the call when this feature is active.

Phones have the same behaviour when you are multi-desked. Multi-desked phones for the same account can have independent key states.

This new behaviour is only present when the feature key is provisioned for that phone; that is, it applies to that device. Otherwise, previous behaviour exists.


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