PJSIP Polycom SRTP problem

HI i’m running Asterisk 13.8.0 on Ubuntu 14.04 x64

I’m having a problem getting my Polycom VVX 600 working with SRTP and PJSIP I get a 488 after the RTP/SAVP.
The Polycom works fine with SRTP if i use chan_sip, and my AASTRA 57i works fine with PJSIP and SRTP.
The Polycom also works fine with PJSIP if i disable SRTP.
I also tested a few soft phones with SRTP enabled on PJSIP and did not have any problems. so it looks like it’s only a
problem with the polycom phones.

any ideas on what the problem could be?

SIP debug and config:


Nothing stands out and your configuration looks correct. I’d file an issue on the issue tracker[1] and attach the configuration and packet log.

[1] https://issues.asterisk.org/jira


I opened a case on issue tracker, thanks for your reply.