[Sip-implementors] "Contact" header in 200 OK for REGISTER method

[Sushil Kumar Verma]

Hi All, According to 3261 RFC , conatct header is medatory in 200 OK for REHISTER   � 10.3 Processing REGISTER Requests says: 8. The registrar returns a 200 (OK) response.  The response MUST contain Contact header field values enumerating all current bindings.  Each Contact value MUST feature an "expires" parameter indicating its expiration interval chosen by the registrar. The response SHOULD include a Date header field."   Can any body please explain me why in RFC 3261 , in list of header fields of section 20 "contact"  is optional in 200 OK for REGISTER. rgds, -Sushil ____________________________________________________   IncrediMail - Email has finally evolved - Click Here

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