<p dir="ltr">You can disable SRTP in dialplan using SIP agent info.<br>
If agen is Zoiper, then need change rtp_secure_media value</p>
<br><div class="gmail_quote"><div dir="ltr">пт, 18 мая 2018 г., 1:21 Michael Jerris <<a href="mailto:mike@jerris.com">mike@jerris.com</a>>:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I’d need to see a full sip trace of the entire thing to answer this.<br>
<br>
> On May 17, 2018, at 4:48 PM, Andrew Cassidy <<a href="mailto:andrew@cassidywebservices.co.uk" target="_blank">andrew@cassidywebservices.co.uk</a>> wrote:<br>
> <br>
> Good afternoon All,<br>
> <br>
> I have experienced the following issue with Zoiper specifically (I have a support ticket open with them currently) and was wondering if it's something that could/should be fixed FreeSWITCH side.<br>
> <br>
> If rtp_secure_media is set to optional, and SRTP is disabled on Zoiper, when FreeSWITCH sends the Re-INVITE, it sends crypto lines. Zoiper then replies with a 514 Unsupported Media Type and the timer refresh fails, causing Zoiper to hang up the call.<br>
> <br>
> My current feeling is that as Zoiper ignored the crypto on the initial INVITE it should be them that then handles the Re-INVITE consistently by also ignoring the crypto lines but I'm not familiar enough with the RFCs to make a judgement.<br>
> <br>
> The workaround is to either enable SRTP in Zoiper or don't set rtp_secure_media to optional when Zoiper is in use.<br>
> <br>
> Kind regards,<br>
> <br>
<br>
<br>
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