Hi,
This Offer-Answer is use-case of supporting multiple m-line for SRTP. The
answerer does support SAVP (for media encryption).
Ideally, Answerer should keep the port zero for audio and video m-lines with
RTP/AVP and non-zero port for audio and video m-lines with RTP/SAVP (if the
answerer want
RTCP port attribute becomes mandatory to tell other end
that RTCP port is not the next subsequent port but the one defined in the rtcp
attribute.
Thanks,
Gaurav
From: Manu Gowdru [mailto:manug...@gmail.com]
Sent: Thursday, November 07, 2013 2:58 PM
To: Gaurav Kumar
Cc: Sip-implementors@lists.cs.co
Hi Manu,
Remote SDP can contain rtcp attribute in the SDP which can specified for each
media (m = ) line.
This rtcp attribute will tell us the rtcp port opened by the remote end.
Thanks,
Gaurav
-Original Message-
From: Manu Gowdru [mailto:manug...@gmail.com]
Sent: Thursday, November 07,
Hi,
The H264 codec (97,98) has different packetization mode and G7221(102,103) has
different bit rates which is valid to send in SDP.
If the media server supports pack mode 1, then as per the preference(of media
server) it should include the h264 codec atrributes.
Thanks,
Gaurav
_
Hi,
While interop with third party vendor sip device, we have got the following
message exchange (Only SDP message shown for sake of clarity)
Device 1 Device 2
INVITE (no SDP) -->
< 200 OK (SDP shown below)
v=0
o=11701 0 0 IN IP4 172.26.29.3
* nack pli
a=sendrecv
a=content:slides
a=label:12
m=application 2372 RTP/AVP 106
a=rtpmap:106 H224/4800
a=sendrecv
Sincerely,
Gaurav Kumar
This is confidential Ittiam property.
___
Sip-implementors mailing list
Sip-implementors@lists.cs.columbia.edu
Hi All,
Consider the below SDP from Polycom SIP endpoint . The rtpmap and fmtp uses
same payload number 96 for h264 and h263 video codec. According to RFC
standards of RTP and SDP, same payload numbers can be given when it is in the
scope of media line. I mean audio and video codecs can have sa
Hi ,
I have some queries regarding Emergency Call Feature.
Where can I get the information about the Emergency Call Feature in IP-PBX.
Which is the best practice for implementing this type of feature for
Location such as India.
Is there any Draft published of it.
Rgds,
Gaurav Kumar
Digilink
