SIP FAQ : SIP Protocol Operation : How does a proxy handle a method other than the standard INVITE, ACK, BYE, etc.?
	See SIP RFC, section 4.2. Proxies always forward requests, regardless of method. A UAS returns 501 (Not Implemented) if it does not support a particular request method.
	[Append to This Answer]
	hgs@cs.columbia.edu
	2000-Sep-13 2:28pm

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