I'm pretty sure what Ed and Srinivas are talking about is the early
media procedures described in RFC 3960. Keeping in mind that DUM
doesn't actually do media, the real question here is: what is the state
of PRACK support in DUM?
I know this has been half-supported for a while (we've had UAC-side
PRACK support since 2007), but I don't know the current status of UAS
PRACK support, or where we plan to be for the upcoming 1.6 release.
(The other part of the equation is UPDATE, but I know DUM handles
UPDATE quite well).
/a
P.S. Hi, Ed! It's good to see your name around. :)
On 12/19/09 09:36, Dec 19, Scott Godin wrote:
resip/dum has the ability to both process and send an SDP
answer early. This means that the SDP answer that is going to be
provided in the 200 response is returned early in a 18x response, and
it's repeated later in the 200. Perhaps this is what the Cisco is
referring to - but I think Early Offer is a strange name, since it's
really an early answer.
Scott
On Fri, Dec 18, 2009 at 9:29 AM, <easassone@xxxxxxxxx>
wrote:
Hi
Scott
Here is what Cisco is telling us that Early Offer is. This for their
call recording interface that uses SIP trunking. They said this is not
in an RFC.
*********************************
Sip Early Offer is the ability of two user agents to communicate before
a call is actually established. In the case of recording, the SIP
Early Offer will indicate the codec required for the call.
Thanks
Ed Sassone
------Original Message------
From: Scott Godin
Sender: slgodin@xxxxxxxxx
To: voora srinivas
Cc: resiprocate-users@xxxxxxxxxxxxxxx
Cc: Ed Sassone
Sent: Dec 17, 2009 3:45 PM
Subject: Re: [reSIProcate-users] Early Offer
What exactly do you mean by Early Offer?
Scott
On Thu, Dec 17, 2009 at 2:46 PM, voora srinivas < voora@xxxxxxxxx
<mailto: voora@xxxxxxxxx>
> wrote:
Hi,
Want to know if Dum can handle "Early Offer", i saw some previous
threads that it can be done, but don't see it in the supported features
list.
Thanks,
Srinivas
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