What I could think with respect to whether SDP is received in provisional
response or not is to check in your application for RTP stream.
I believe in having a check in application to check whether any RTP stream
is still there or not after receiving 181 or 182 with SDP. You can't ensure
that remo
On Tue, 2010-03-02 at 16:49 +0530, Sunita Bhagwat wrote:
> I'd like to know if a SIP gateway receiving a 181 (Call is being
> forwarded) or a 182 (call Queued) from SIP peer should play local
> ringback towards the originating endpoint (say PSTN/ISDN). RFC 3960
> mentions early media and ring-back
I would imagine that you specify 5.3 only to conserve bandwidth; 6.3 only to
maximize call quality with the G723 codec; annex-a to conserve bandwidth
during silence periods
Kevin Attard Compagno
3CX - www.3cx.com
Developers of 3CX Phone System - a software based VoIP PBX
On 2 March 2010 14:46,
On second thoughts, what purpose does it serve to specify the bitrate for
G723.1 in SDP ?
Best Regards,
Elison
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RFC 5373 can help; however because of security concerns (section 7), it likely
won't allow you to override the deactivation of the feature unless the phone
knows/trusts that such an override should occur.
> -Original Message-
> From: sip-implementors-boun...@lists.cs.columbia.edu [mail
Thanks Vivek. You are right, the choice of actual tone could be either
configurable or
something other than RBT.
But the other aspect of the problem is to be prepared to play early media
inband (if a
prior 183 or current 181 contain SDP) by cutting through media or playing a
specific
tone - s
Playing RBT on receipt of 181 (Call is being forwarded) or 182 (Call Queued)
does not seems a good choice since 181/182 does not give any indication
whether call has been placed to called party and called party is ringing. I
would prefer playing Routing Tone or some sort of local announcement. RBT
Hi, I'm thinking about a custom usage of PUBLISH method. The idea is to send a
PUBLISH with body and "Expires: 0" but no "SIP-If-Match" header, so it would
generate a NOTIFY for current subscribers, but since "Expires" is 0 future
subscriptions would not receive such notification (this is what I
Hi all,
I'd like to know if a SIP gateway receiving a 181 (Call is being forwarded) or
a 182 (call Queued) from SIP peer should play local ringback towards the
originating endpoint (say PSTN/ISDN). RFC 3960 mentions early media and
ring-back only when a 180 Ringing is received. However I'm seein
