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MiVoice Office 250/Mitel 5000 / Mitel 5312: Headset setup

« on: January 31, 2012, 01:00:03 PM »

I have been trying to get a headset working with this model of IP Phone. I have the phone setup with PoE, and it is connected with a handset, and a headset. When I attempt to use the headset, by pressing the microphone button on the top left, and call someone it does nothing. The headset does not have a dial tone coming from it when doing this. I have tried to dial 397, and 317 when the handset is down. But with no luck, it always comes up with invalid. How have any of you completed this setup? Am I overlooking something very simple here, please help!