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IP Phones delay in Ending call

Occasional Visitor

IP Phones delay in Ending call


I've a Polcyom VVX600 and a Soundpoint 500 both showing same problem of delay in ending the call. Here is the scenario. 


Server: OpenSIPs 

Polycom device initiates call to PSTN and stay on call more than 10 minutes. End the call from PSTN side , Polycom takes >7 seconds (on avg) to clear the call screen. 


I've taken traces and the BYE from the Server reaches Polycom and Polycom device sent 200OK immediately as well, after that the Polycom IPPhone takes about 7-15 seconds to get out of the call screen.


I've tested the same call scenario using CISCO, Grandstream, and softphones all end the > 10min call immediately. 


Please let me know if call captures or logs are required from devices to resolve this.






Message 1 of 2
Polycom Employee & Community Manager

Re: IP Phones delay in Ending call

Hello Gohar ,

welcome to the Polycom Community.

It is always useful to include the currently used SIP or UC Software version as issues experienced or a question asked may already be addressed in a newer release.

This also allows yourself and others to check against current software release notes, Administrator Guides or FAQ post’s.

The above is also stated in the "Read First"

Therefore the Polycom VoIP FAQ contains this post here:

Question: How can I find out my SIP or UC Software Version of my Phone?
Resolution: Please check here

Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.

Best Regards

Steffen Baier

Polycom Global Services

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The title Polycom Employee & Community Manager is an automatic setting within the community and any forum reply or post is based upon my personal experience and does not reflect the opinion or view of my employer.
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Message 2 of 2