[Freeswitch-users] FreeSWITCH offering SRTP on Re-INVITE

[Sergey Safarov]

You can disable SRTP in dialplan using SIP agent info.
If agen is Zoiper, then need change rtp_secure_media value

пт, 18 мая 2018 г., 1:21 Michael Jerris <mike at jerris.com>:

> I’d need to see a full sip trace of the entire thing to answer this.
>
> > On May 17, 2018, at 4:48 PM, Andrew Cassidy <
> andrew at cassidywebservices.co.uk> wrote:
> >
> > Good afternoon All,
> >
> > 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.
> >
> > 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.
> >
> > 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.
> >
> > The workaround is to either enable SRTP in Zoiper or don't set
> rtp_secure_media to optional when Zoiper is in use.
> >
> > Kind regards,
> >
>
>
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