Re: [Sip-implementors] Early dialogs, reliable responses and PRACK addressing

2008-10-02 Thread Vikram Chhibber
On Thu, Oct 2, 2008 at 11:09 AM, Harsha. R [EMAIL PROTECTED]wrote: ... they just refer to the fact that Tables 1 and 2 in rfc3262 extend tables 2 and 3 in rfc3261 and the Contact is marked as optional in 1xx responses. If 3262 clearly stated that reliable provisional responses MUST have

Re: [Sip-implementors] Early dialogs, reliable responses and PRACK addressing

2008-10-02 Thread Iñaki Baz Castillo
2008/10/2, Harsha. R [EMAIL PROTECTED]: Its not clear to me as to why the 18X is expecting a Contact. The purpose of Contact is to do a target refresh. 18X missing a Contact header means a target refresh has not happened. In this case, address the PRACK to the original remote target(

[Sip-implementors] sending DTMF as Notify

2008-10-02 Thread Vivek Gupta
Hi, I need information on how to send DTMF tones as unsolicited Notify method within an established dialogue. Can anyone explain the steps to implement the same? Information on any SIP soft-phone that supports DTMF as Notify would be of great of help? With regards, Vivek GUpta

Re: [Sip-implementors] sending DTMF as Notify

2008-10-02 Thread Vikram Chhibber
INFO is more appropriate to send DTMF using application/dtmf-relay content-type. Please note that this is not IANA registered application mime type though. For example: INFO sip:[EMAIL PROTECTED] [EMAIL PROTECTED] SIP/2.0 Via: SIP/2.0/UDP 172.80.2.100:5060 From: sip:[EMAIL PROTECTED] [EMAIL

Re: [Sip-implementors] SIP Proxy inserting Option Tags

2008-10-02 Thread Attila Sipos
Is a SIP proxy allowed to insert Option tags when forwarding a request? Not usually but this RFC allows it. I guess the reason is that protecting against a poxy's resource leakage is sometimes considered more important than allowing a call to proceed without the requirement. In that case,

Re: [Sip-implementors] sending DTMF as Notify

2008-10-02 Thread Attila Sipos
INFO is more appropriate to send DTMF using application/dtmf-relay content-type. That is a matter of opinion - some would say that DTMF should be solicited before it is sent. I guess though in this case, the NOTIFY is unsolicited anyway. It is unusual for unsolicited NOTIFY to be used for DTMF

Re: [Sip-implementors] Early dialogs, reliable responses and PRACK addressing

2008-10-02 Thread Dmitry Akindinov
Hello, Iñaki Baz Castillo wrote: 2008/10/2, Dmitry Akindinov [EMAIL PROTECTED]: RFC 3262 says clearly that The provisional response ***MUST establish a dialog*** if one is not yet created. ... they just refer to the fact that Tables 1 and 2 in rfc3262 extend tables 2 and 3 in rfc3261 and

Re: [Sip-implementors] Early dialogs, reliable responses and PRACK addressing

2008-10-02 Thread Iñaki Baz Castillo
2008/10/2, Dmitry Akindinov [EMAIL PROTECTED]: For me this means that, in RFC 3261, Contact must be present in a 2xx to an INVITE. Yes, but according to this table it's optional for 1xx. And 3262 does not update that, though with reliable 1xx the Contact is more likely to be needed to

Re: [Sip-implementors] XML inside SIP

2008-10-02 Thread Iñaki Baz Castillo
2008/10/2, Manoj Priyankara (NOD) [EMAIL PROTECTED]: Hi All, Does anyone know the usage of XML inside SIP messages (like NOTITY) ? What is exactly the question? -- Iñaki Baz Castillo [EMAIL PROTECTED] ___ Sip-implementors mailing list

Re: [Sip-implementors] Early dialogs, reliable responses and PRACK addressing

2008-10-02 Thread Paul Kyzivat
Harsha. R wrote: ... they just refer to the fact that Tables 1 and 2 in rfc3262 extend tables 2 and 3 in rfc3261 and the Contact is marked as optional in 1xx responses. If 3262 clearly stated that reliable provisional responses MUST have Contact - we would not have this issue Its not

Re: [Sip-implementors] sending DTMF as Notify

2008-10-02 Thread Paul Kyzivat
I'm not going to tell you how to do that because it isn't a legal sip usage. It is true that some things have been known to use unsolicited NOTIFY. I'm not certain I have heard of it for DTMF, but I have heard of it for MWI. But its still not a standard usage. The only plausible reason I can

Re: [Sip-implementors] XML inside SIP

2008-10-02 Thread Victor Pascual Ávila
On Thu, Oct 2, 2008 at 12:39 PM, Manoj Priyankara (NOD) [EMAIL PROTECTED] wrote: Does anyone know the usage of XML inside SIP messages (like NOTITY) ? There are tens of RFCs registering new XML-based MIME types as well as new XML namespaces. This paper [1] might be what you are looking for,

Re: [Sip-implementors] Early dialogs, reliable responses and PRACK addressing

2008-10-02 Thread Dmitry Akindinov
Hello, Iñaki Baz Castillo wrote: 2008/10/2, Dmitry Akindinov [EMAIL PROTECTED]: For me this means that, in RFC 3261, Contact must be present in a 2xx to an INVITE. Yes, but according to this table it's optional for 1xx. And 3262 does not update that, though with reliable 1xx the Contact is

Re: [Sip-implementors] Few offer/answer queries

2008-10-02 Thread Kamalakanta Palei (kpalei)
What is the behavior of the receiver if it receives offer with different session id in re-INVITE or UPDATE? Take down the call as REINVITE o-line with a new session id identifies a session that does not exist at UA. [Kamal] Taking down the existing call may not be a good idea, one can reject