Voicemail can only be played back to a sound device on the computer. So, no, it cannot be played back to the Polycom phone. Some headset bases allow the headset to be used with the phone or with USB, and have a button to switch quickly between the two, but that's the only thing I can think of to be able to use the same headset for both.
Hopefully someone else knows of a better solution.
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George Ganahl CCXP, GCA
Principal Technology Consultant
Genesys
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