2008/6/10 Yuantao Zhang <[EMAIL PROTECTED]>:

> Thanks for keeping answering my question. And it is happy to discuss with 
> you. Could you give me a scenario that the port number in R-line and the 
> lower layer UDP destination port are different? They are always same, aren't 
> they? Thanks

as well as others examples, there are also these times when a UAC
sends a request and the destination is resolved via SRV - the R-URI
may be sip:example.com, but the port could be anything at all.  Note
however that if a port is explicitly provided in the URI, then this
would not be the case.

 ~ Theo
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