B2BUA is not going to receive even 100 Trying from client B if it's out of the network. After several re-transmisstion to client B, B2BUA should send 4XX response back to client A. Eventually B2BUA has to send final response anyway.
-----Original Message----- From: Sunil Kumar Verma [mailto:[EMAIL PROTECTED] Sent: Thursday, March 08, 2007 4:47 PM To: 'Paul Kyzivat'; Sarkar, Uttam Cc: [email protected] Subject: RE: [Sip-implementors] 180 Ringing from Proxy(BBUA) Thanks Paul and Uttam. I have B2BUA, so we can say that B2BUA can generate 180 RINGING for the call which are yet to be answered at the far end?? Caller receives ringback tone only if the called party is ringing.. Think of a scenario.. if the called user has voice mail configured and due to some network problem his client ,after registering to B2BUA, is out of network. The B2BUA still consider that the user is available and if somebody tries to reach that user he hear deaf silence and then after 10 to 15 sec the call goes to Voice mail. Is there any way we can avoid the deaf scilence in case of B2BUA? Regards Sunil Verma -----Original Message----- From: Paul Kyzivat [mailto:[EMAIL PROTECTED] Sent: Thursday, March 08, 2007 3:36 PM To: Sarkar, Uttam Cc: Sunil Kumar Verma; [email protected] Subject: Re: [Sip-implementors] 180 Ringing from Proxy(BBUA) Sarkar, Uttam wrote: > Nope. It can send 100 Trying. > 180 would have "totag" that would create a dialog. Without getting any > reponse from client B. You can't create a dialog. That is correct answer for a proxy. For a B2BUA almost anything is possible. It depends on what the B2BUA is trying to accomplish. Paul > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Sunil > Kumar Verma > Sent: Thursday, March 08, 2007 1:52 PM > To: [email protected] > Subject: [Sip-implementors] 180 Ringing from Proxy(BBUA) > > > > Hi, > > In case of BBUA, is it possible for proxy to generate 1xx response > for an INVITE, before receiving any reply from > terminating SIP client. > For Ex. SIP client A calling another SIP client B, and before > receiving any reply from the SIP client B for the initial > INVITE, can proxy generate 180 RINIGING reply? > > Thanks > Sunil verma > > > > > > > The information contained in this electronic message and any > attachments to this message are intended for the exclusive use of the > addressee(s) and may contain proprietary, confidential or privileged > information. If you are not the intended recipient, you should not > disseminate, distribute or copy this e-mail. Please notify the sender > immediately and destroy all copies of this message and any > attachments. > > WARNING: Computer viruses can be transmitted via email. The recipient > should check this email and any attachments for the presence of > viruses. The company accepts no liability for any damage caused by any > virus transmitted by this email. > > www.wipro.com > > _______________________________________________ > Sip-implementors mailing list [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > > _______________________________________________ > Sip-implementors mailing list [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments. WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. www.wipro.com _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
