External Microphone & Speaker at 7971

Unanswered Question
Sep 3rd, 2009
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I saw at 7971 has external microphone and speaker 7971. I have tried it out, the speaker could work properly, unfortunately the microphone could not work properly. I have tested 5 pcs 7971 and got the same problem. I have tried using different firmware and got the same problem.

Have anyone got the same problem with the microphone at 7971? Is there any IP Phone 79xx series that have external Microphone & Speaker & Touchscreen features?

Thanks in advance.

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