[Sip-implementors] Subscribe/Notify's Event

Hi, List, I read the RFC 3265 on SUBSCRIBE /NOTIFY method, but I CANNOT find the definition of the EVENTS. Is it the application's responsibility to define the EVENTS? Best Regards, Jade ___ Sip-implementors mailing list [EMAIL PROTECTED]

[Sip-implementors] query on SIPS

Hi, List, I wonder y sip has the sips: url ? what is the different between sip: sips: Best Regards, Jade ___ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors

[Sip-implementors] callid in a sip conference

Hi, List, In a conferece, should the CALLID header have same value for every participent? Best Regards, Jade ___ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors

[Sip-implementors] SIP Conference Server

Hi, List, I wonder if there is any RFCs for implementing SIP Conference Server? Any comments on implementing a SIP MCU will be highly appreciated. Best Regards, Jade ___ Sip-implementors mailing list [EMAIL PROTECTED]

[Sip-implementors] SDP confusion

Hi, List, In rfc 2833 ,DTMF event use the same port as audio. the SDP will like this: v=0 o=jade 2890844526 2890842807 IN IP4 11.11.2.2 s=POI Seminar i=A Seminar on how to make Presentations on the Internet u=http://www.ee.org c=IN IP4 11.11.2.2/127

[Sip-implementors] FW: SDP confusion

Hi, List, In rfc 2833 ,DTMF event use the same port as audio. the SDP will like this: v=0 o=jade 2890844526 2890842807 IN IP4 11.11.2.2 s=POI Seminar i=A Seminar on how to make Presentations on the Internet u=http://www.ee.org c=IN IP4 11.11.2.2/127

[Sip-implementors] Re:DTMF in SIP

Dear Paul, Thank u for your help.We inserted the DTMF into the RTP audio stream (G.7231). The packets r often lost. Many people recommend using RFC 2833 . But I wonder how RFC 2833 can insure the reliability transport of DTMF events.I cannot get much from the RFC 2833. Regards, Jade

RE: [Sip-implementors] how can a server unregister a UA by forc?

- From: Jade Chen Yan [mailto:[EMAIL PROTECTED]] Sent: Friday, February 14, 2003 7:45 AM To: 'Prasanna Venkatesh'; 'Sip-Implementors (E-mail)' Subject: RE: [Sip-implementors] how can a server unregister a UA by forc? to simplify the scenario, can we just remove the UA from the registrator DB

[Sip-implementors] how can a server unregister a UA by forc?

Hi, when a UA wants to registrate to a registration server, it sends the REGISTER request to the server. The server accepts the request at first. After sometime, the server finds that the UA should be cancelled for some reason. (ie.the UA is a ragger). how can a server unregistered the UA by

[Sip-implementors] DTMF in SIP

Hi, we use RTP to carry the DTMF , but we found that it was not reliable . We want to use INFO to carry the DTMF message, but I am not sure if the RFC 2976 is obsolete since RFC 2543 is replaced by RFC 3261? or can anyone give me other solutions on this problem. Regards, Jade begin 666

[Sip-implementors] Paylaod type of H.264/H.26L

List, Can any one tell me the payload type of H.264?I cannot find it in any RFC? Best Regards, Jade begin 666 ATT00019.htm M/%$3T-465!%($A434P@4%53$E#((M+R]7,T,O+T141!(5$U,(#0N,!4 MF%NVET:6]N86PO+T5.(CX-CQ(5$U,/CQ(14%$/@T*/$U%5$$@2%144U%

[Sip-implementors] SIP2H323 IWF

hi, list we know the H323's capability exchange requires an establishing call.. when a sip UA sends OPTION to a H323 terminal via a IWF,. what shall we do?how can we querry H323 capabilites without esatablishing a call? B.Regards, Jade begin 666 ATT4.htm

[Sip-implementors] no SDP in INVITE message

Hi, list, Suppose the following scenario , UAC doesnot send the body in the INVITE message, and UAS sends the 200 OK to UAC. But UAC finds that it cannot support the midia capability of UAS. UAC should send the ACK for the 200 OK. what will the UAC do next?send BYE request , re-invite

[Sip-implementors] MESSAGE method

Hi, Is the MESSAGE request for SIP still a draft? Best Regards, Jade ___ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors

[Sip-implementors] processing the REGISTER request

Hi, List, I have some doubts in responding the REGISTER request. In the RFC 3261 , 10.3 , it says When receiving a REGISTER request , a registrar follows these steps 1.the registrar inspects the Request-URI to determine whether it has access to bindings for the domain identified in the

RE: [Sip-implementors] hello message between UA server

, the registration has an expiration time. If the UA fails to refresh the registration before the expiration time, the server forgets the registration - concluding the UA is no longer present or alive. Paul Jade Chen Yan wrote: Hi, List, Since a UA registers to a server, the server should

[Sip-implementors] Shall I attach the transaction to the Dialog ?

Hi, List, I am confused the relationship between dialog and transaction. suppose the following scenary: UA1UA2 when UA1 sends an INVITE message to the UA2, it creats a transactionn UAT1. then UA2 receivesthe INVITE message , it creats both the dialog UAD2 and