Hi all, I have a question that seems to be very easy at the beginning. But after having a closer look to it, it is not so easy anymore. I hope somebody has an answer for me?!
My question is: How can I idenify SIP Messages (or TCP packets containig SIP messages) to filter them e.g. for QoS? I mean, a SIP message has no real header, that says 'This is a SIP message'. And using TCP or UDP, there is no field in the headers identifying the protocol that is encapsulated. The only idea is to use the default port 5060 for SIP messages (to filter all messages that use this port), but what will happen, if the port changes, or if other protocols use this port as well? Is there any other possibility to identify SIP messages? Thank you very much for your support! Best regards Daniela ########################################### This message has been scanned by F-Secure Anti-Virus for Microsoft Exchange. For more information, connect to http://www.F-Secure.com/ _______________________________________________ Sip-implementors mailing list [email protected] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
