The sec 19.1.4 of RFC3261 says... "A URI omitting any component with a default value will not match a URI explicitly containing that component with its default value. For instance, a URI omitting the optional port component will not match a URI explicitly declaring port 5060. The same is true for the transport-parameter, ttlparameter, user-parameter, and method components."
Therefore, <sip:[EMAIL PROTECTED];transport=UDP> and sip:[EMAIL PROTECTED]:5060 are not equivalent URI. In fact, all the following 4 URIs are different as per RFC3261, <sip:[EMAIL PROTECTED]:5060;transport=UDP>, <sip:[EMAIL PROTECTED];transport=UDP>, sip:[EMAIL PROTECTED]:5060, sip:[EMAIL PROTECTED] But, I think, transport specific default port can be added to IP address though sec 19.1.4 don't allow it. However, I agree with sec 19.1.4 from domainname point of view as DNS SRV may lead to different port than default one. As per me, sip:[EMAIL PROTECTED]:5060, sip:[EMAIL PROTECTED] are not equivalent whereas sip:[EMAIL PROTECTED]:5060, sip:[EMAIL PROTECTED] are equivalent. Siddhartha Office firewalls, cyber cafes, college labs, don't allow you to download CHAT? Click here: http://in.messenger.yahoo.com/webmessengerpromo.php _______________________________________________ Sip-implementors mailing list Sip-implementors@cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors