This might help... http://www.ietf.org/rfc/rfc4028.txt
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Yuantao Zhang Sent: 22 May 2008 09:56 To: [email protected] Subject: Re: [Sip] What are heart beat messages in VOIP via SIP calls? Thanks Dear Sir or Madam What are heart beat messages in VOIP via SIP calls? What is the standard? Thanks Steven _______________________________________________ Sip mailing list https://www.ietf.org/mailman/listinfo/sip This list is for NEW development of the core SIP Protocol Use [EMAIL PROTECTED] for questions on current sip Use [EMAIL PROTECTED] for new developments on the application of sip _______________________________________________ Sip mailing list https://www.ietf.org/mailman/listinfo/sip This list is for NEW development of the core SIP Protocol Use [EMAIL PROTECTED] for questions on current sip Use [EMAIL PROTECTED] for new developments on the application of sip
