On Feb 1, 2013, at 6:00 AM,
royj@yandex.ru wrote:
> Is there <param name="inbound-zrtp-passthru" value="true"/> in profile
>
> On Thu, 31 Jan 2013 17:43:34 -0500
> Eli Burke <
eburke@edge-net.net> wrote:
>
>> I'm trying to use Freeswitch with an open source voip client called Linphone, but cannot manage to establish functioning ZRTP sessions. The problem *seems* to be related to the RTP stream's SSRC. I'm trying to conclusively determine if the problem lies with Linphone, Freeswitch, or one of the underlying zrtp implementations (libzrtp and zrtpcpp).
>>
>> Here's what I've determined so far:
>> 1) ZRTP support is compiled and functioning. I can establish ZRTP sessions between two iPhones running Groundwire.
>> 2) linphone + ZRTP works correctly if I make a one legged call to a Freeswitch echo extension
>> 3) linphone + ZRTP works correctly if I turn on bypass-media
>> 4) linphone gets a CRC error when trying to verify the ZRTP packet on any two-legged call
>> 5) disabling the CRC check results in a successful ZRTP session, but the audio is extremely garbled
>>
>> Is Freeswitch modifying the ZRTP packets when running in proxy mode? If so, how is it that some clients are able to handle this situation?