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Oct 12

Polycom CX600 and a Crashing PC

If you are using Lync and have a Polycom CX600 configured and conncted to your PC, can the call stay up if the PC crashes?

A few of us ran some tests at work and “unplugging the USB” is our equivalent of the PC crashing.

Below are some of the tests we did with the results:

  1. Call from Lync; answer on Lync. Transfer call to Polycom. Unplug USB and call drops.
  2. Call from Polycom; answer on Lync. Unplug USB and call stays up
  3. Call from Lync; answer on Polycom; Unplug USB and call stays up

With Polycom set as default audio device in Lync

4. Call from Lync; answer on Polycom; disconnect USB and call stays up

5. Transfer call #4 to “PC Mic and Speakers” then transfer it back to Polycom; Unplug USB and call drops.

So it appears in #5 that answering on the Polycom will not always keep you alive in the event of a PC issue. In our testing, what happened when transferring the call from the Polycom to the Lync client is that Lync set up a new phone call and didn’t just redirect the audio stream.

So, in general, if you initiate all of your calls on a Polycom CX600, then what your PC does is irelevant.

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