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Polycom phone disconnects after 10 minutes on outbound call

Posted on 2015-02-23
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Last Modified: 2015-04-29
Hi,

We have a customer that we provide polycom phones too. When they place an outbound call on a particular phone/ext, the call randomly disconnects after 10 minutes .  We see on the SIP trace the Polycom phone cannot or does not correlate the UPDATE message with the existing call therefore the phone sends a 481 Call Transaction Doesn't Exist and eventually that causes the Broadsoft to drop the call.  We have replaced the phone, only to have the same problem happen randomly about 1 month later with the new phone. They have multiple phones at this facility and have not had this issue with any others. I'm confident that the provisioning is correct, and I'm stumped as what to have them try next. I have attached the trace as well. Any help is appreciated.

Thanks,
MAtt
Trace.txt
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Question by:Vardata
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Phonebuff earned 2000 total points
ID: 40628053
sounds like port mapping issues -
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by:Vardata
ID: 40628206
Thanks Phonebuff...would that affect only one phone or everyone within that office? Any suggestions on how to troubleshoot that?
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by:Phonebuff
ID: 40628224
Matt,

     The short answer is YES.
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