Thank you for the feedback. We have not closed out the bug because we feel we can do better. It will take a different software architecture to fully address the problem which will take some more time to implement and test.
Just wanted to followup on this thread to see if anyone else is currently experiencing voice delay issues with call transfers. I'm working with a customer that is having this exact issue with 1-2 seconds where there is no sound after a call connects from a transfer either internally or from an external call. The UC320 is on the latest firmware 2.3.2 (6) and connected to a SG500-28P. The phones (SPA509G's) and the UC320 are the only devices connected to the switch. Phones are on voice vlan 100 and the SG500 switchports are set to smartport > ip phone + desktop for the handsets and smartport > switch for the port connected to the UC320. Also ran the impedence test on the FXO ports and set the FXO ports to the recommended settings from the test results. Has anyone with this same issue tested SPA phones with power adapters directly from the UC320 switchports? Just wondering if the delay still exists even from those ports. Any feedback would be greatly appreciated. Thanks.
we have the same problem with UC320 (2.3.2(6)) and SPA504G only with one client. We have changed the UC320 and the problem is persistent.
We have other UC320 at other installations and the users have not this problem.
Hi Tony and Chris,
We have created a PMF to improve the audio delay. Please send me an email at firstname.lastname@example.org. I will reply you with the PMF. Install the PMF at Status->Devices->Alter PMFs, and apply configure afterwards.
If you experience the audio delay right after the call is set up. Please go to the link at
https://supportforums.cisco.com/docs/DOC-16301 to download disable_RTCP.pmf.
Please install the PMF at Configure Utility->Status->Devices->Alter PMFs, and apply configure afterwards.