[Freeswitch-users] OneWay audio after hold->unhold

[Bote Man]

We would be VERY appreciative if you could provide the configurations on
the Avaya and FreeSWITCH that allow them to talk to each other. In my
experience Avaya does not play well with others, and I have tried and given
up.

Thank you in advance!

Bote


On Fri, Sep 4, 2015 at 12:09 PM, Prashanth Devarajappa <
Prashanth.Devarajappa at enghouse.com> wrote:

> Hello,
>
>
>
> I am connecting to Avaya switch using SIP trunk interface from FS with TLS
> & SRTP connection. This works well for inbound and outbound calls. I have
> an issue with media, when I try hold -> unhold operation from FS for an
> outbound call.
>
>
>
> When FS tries to unhold the call by sending Re-INVITE, avaya responds with
> 200 OK. Then sends INVITE w/o SDP to shuffle the media(IP Shuffling, to
> make media flow directly b/w endpoints). FS responds with 200 OK + SDP as
> expected. Now avaya sends ACK + SDP where SDP has the updated connection
> info(IP and port of endpoint) where media should be sent. Along with this
> it also changes the crypto master key as per RFC due to change in
> connection info(c=).
>
>
>
> On seeing this ACK, FS update the connection info(which is good) and
> change its own crypto master key in response. however this new master key
> is not sent to far end, meaning FS can decode the media it receives but
> other end can't decode the media FS is sending to it resulting in one way
> audio.
>
>
>
> Has anyone come across this issue ?
>
>
>
> Is there any way to trigger Re-INVITE or UPDATE from FS so other end gets
> new master key ?
>
>
>
>
>
> Regards
>
> Prashanth
>
>
>
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