[Freeswitch-users] SRTP interoperability

SERGE TUMBA serget68 at msn.com
Tue Apr 6 23:00:51 PDT 2010

hello Jason,


Thank you for your prompt responses and you have been very helpfull. I also tried SRTP on Asterisk and I got virus when downloading libraries ... and I also found ZRTP is better. However, can you be specific about SRTP interoperability with end-points that support it? it looks like this is a benefit of SRTP over ZRTP? While ZRTP is based on SRTP right?


Thank you!



> Date: Wed, 7 Apr 2010 15:06:41 +1000
> From: jason at jasonjgw.net
> To: freeswitch-users at lists.freeswitch.org
> Subject: Re: [Freeswitch-users] SRTP on FreeSWITCH
> SERGE TUMBA <serget68 at msn.com> wrote:
> > 
> > I know that FreeSWITCH supports ZRTP but I would like to know if someone already tried to deploy SRTP on FreeSWITCH? If so, can I have the HOWTO describing this setup if any have been done?
> I tried it, but it exposed bugs in OpenSSL. Soon thereafter, ZRTP became
> available so I switched to that.
> If you want SRTP, you have to turn on TLS, make sure that both ends are using
> it, and enable SRTP in the SIP profile, if I remember correctly. ZRTP is
> better in my opinion; the only reason why you would want to use SRTP is for
> interoperability with end-points that support it, but not ZRTP - unless you
> have a public-key infrastructure in place that you want to use for some
> reason.
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