Hi Sathish, A common mechanism to achieve this is to send DTMF using the SIP INFO method. Each digit can be encoded as a separate SIP INFO request. The incremental CSeq's ensure that the other end receives the digits in order. If for any reasons, a digit is dropped (network delays or otherwise), it can be determined by the missing CSeq.
You can try the Eyebeam softphone (www.xten.com) to see how digit transmission is done using the SIP INFO method. I am not sure that in-band RTP or RTP/ RFC 2833 is a good idea for money transfer kind of application as the RTP streams will then carry both audio and digits. I hope this helps. regards, Gaurav -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of sathish Sent: Thursday, August 04, 2005 10:44 AM To: [email protected] Subject: [Sip-implementors] Query regarding inorder delivery of messages Hi All, I have some query regarding inorder delivery of messages.Pls lemme know the best possible ways to ensure inorder delivery of SIP messages,say for example in an application like money transfer through phone..how can I ensure that dialled digits( corresponds to amount to be transferred ) goes exactly in order ? with thanks, sathish _______________________________________________ Sip-implementors mailing list [email protected] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors ********************** Legal Disclaimer **************************** "This email may contain confidential and privileged material for the sole use of the intended recipient. Any unauthorized review, use or distribution by others is strictly prohibited. If you have received the message in error, please advise the sender by reply email and delete the message. Thank you." ********************************************************************** _______________________________________________ Sip-implementors mailing list [email protected] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
