Hi Ivar, The behaviour of B2BUA depends here depends on situation. Since the two call legs on either side of B2BUA are independent SIP Call legs, and B2BUA is aware of both, it is in best position to deal with message. Depending on whether both ends support PRACK etc, it has to decide how to change contents of the message (or generate new messages) so that both parties get an understanding on the call.
regards Rayees -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ivar Sent: Wednesday, May 30, 2007 1:08 PM To: sip-implementors@cs.columbia.edu Subject: [Sip-implementors] b2bua and PRACK Hi, Does normally b2bua handles PRACK ? Problem is if it handles, PRACK may contain SDP offer, that can't be forwarded to otherside of b2bua. If not, ... does b2bua just forward PRACH and doesn't implement it at all ?' Thanks, _______________________________________________ Sip-implementors mailing list Sip-implementors@cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________ ---------------------------------------------------------------------------------- IMPORTANT The information contained in this e-mail any attachments is intended only for the named recipient and may be privileged or confidential. If you are not the intended recipient, please notify us immediately on +44 (0)1908 425000 and do not disclose, copy, distribute or take any action based on the contents of this e-mail. You should understand and accept that, when communicating with us by e-mail, it is not a totally secure communication medium. We accept no liability for any direct, indirect or consequential loss arising from any action taken in reliance on the information contained in this e-mail and give no warranty or representation as to its accuracy or reliability. DIGITALK has the facility to monitor and read both incoming and outgoing communications by e-mail. In line with industry efforts to reduce the proliferation of Un-Solicited SPAM messages, DIGITALK uses various methods including Reverse-DNS lookups and ban-lists to prevent malicious content reaching our users. This message and any attachments has been scanned for known viruses. However, we would advise you to ensure the content is indeed virus free. We do not, to the extent permitted by law, accept any liability (whether in contract, negligence or otherwise) for any virus infection and/or external compromise of security and/or breach of confidentiality in relation to transmissions sent by e-mail. VAT No: GB 876 3287 81. Reg No: 3080801 Place of Registration: England Registered Office Address: 2 Radian Court, Knowlhill, Milton Keynes ----------------------------------------------------------------------------------" _______________________________________________ Sip-implementors mailing list Sip-implementors@cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
