Hi,
When a Gateway (GW) makes an Out Bound SIP call, it receives a non-2XX
response (and not a provisional response) with Content-Type that it does not
understand, what should be the behavior of GW in this case?
Currently, since the GW cannot send a response to a response for not
understandin
Hi Michael,
This will not be allowed. A (UAC) has sent all the codecs it supports,
and B (UAS) has respoded with the codecs it is willing to talk to A for this
call. Only one codec will be negotiated for media transfer between A and B.
In your example below, the negotiated codec is G.729, so
Hi Rashid,
Yes, UAC can receive media packets the other side. These are early media.
RFC 3960 explains clearly how early media and regular media needs to be
handled by UAs:
Answer to your question:
<
Section: 3.1.
Following normal SIP procedures, the UAC is ready to play any
incoming medi
Hi Brett,
From RFC 3262 section 3 snippets that you have quoted:
"If the PRACK does match an unacknowledged reliable provisional response, it
MUST be responded to with a 2xx response." and "If the UAS does send a
final response when reliable responses are still unacknowledged, it SHOULD
NOT
EMAIL PROTECTED] On
> > Behalf Of Sachin Rastogi
> > Sent: Montag, 22. September 2008 13:45
> > To: Aneesh Naik
> > Cc: sip-implementors@lists.cs.columbia.edu
> > Subject: Re: [Sip-implementors] Should 'ptime' value be
> > multiple of 5 or 10
> >
> &
Yes, as explained by alex the ptime depend on the frame size...
The frame size for g.711 is 5ms, for g.729 is 10ms and for g.723 it is 30
ms.
So the ptime for 711 and 729 can be 10, 20, 30... and for 723 it can be
30,60
-Aneesh
On Mon, Sep 22, 2008 at 1:50 PM, Alex Balashov <[EMAIL PROTECTED]
Hi,
While negotiating Comfort Noise in SIP SDP, is it mandatory to have a= for
CN payload 13?
For Eg:
m=audio [media_port] RTP/AVP 0 13
a=rtpmap:0 PCMU/8000
is it ok to send SDP in this format
or
m=audio [media_port] RTP/AVP 0 13
a=rtpmap:0 PCMU/8000
a=rtpmap:13 CN/8000
We need to have the a= l
of seconds indicated in the header
> field value. When the timer fires, the invitation is considered to be
> expired. If the invitation expires before the UAS has generated a final
> response, a 487 (Request Terminated) response SHOULD be generated.
>
> I get from this, that you must r
Hi All,
Can Expires header have a value of "0" for INVITE request?
If yes then how should it be handled because the request will expires as
soon as it is received by UAS.
Thanks,
Aneesh
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Hi,
According to RFC 4475 - Torture Test Messages: Section 3.1.2.4. Request
Scalar Fields with Overlarge Values.
If the CSeq value is in error (ie. > 2**32 -1) in Request message then the
entity should respond with 400 bad request due to CSeq error.
What should be the CSeq value in the 400 bad r
Hi,
RFC 3550, section 6.4.2 RR: Receiver Report RTCP Packet, states:
*An empty RR packet (RC = 0) MUST be put at the head of a compound RTCP
packet
when there is no data transmission or reception to report.*
What does empty RR packet mean?
Is it that, if RC = 0, we need to send the compound packe
Hi,
What should be the behavior when SDP is longer than that given in
"Content-Length" header?
The RFC 3261 section 18.3 Framing states:
If there are additional bytes in the transport packet beyond the end of the
body, they MUST be discarded.
So this means, SIP parser should discard the data bey
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