From: Nina Garaca <[EMAIL PROTECTED]>
Q1: Should I expect that these responses have a Contact header?
As Paul says, if it didn't have a Contact header, it couldn't
establish a dialog.
Q2: If they do so, should the remote target of the dialog be refreshed
by that Contact at the side that has received that 1xx response and
should the remote target of the dialog be refreshed by the Contact in
the INVITE request at the side that has received that INVITE?
Responses are not "target refresh requests", so they don't change the
target address at their end of the dialog. But of course, the
responses to the dialog-initiating request establish the initial
target address.
Q3: If not, should the remote target of the dialog be refreshed by the
Contact in the INVITE request
at the side that has received that INVITE and has sent dialog
establishing 1xx response?
RFC 3261 section 12.2:
INVITE, the only target refresh request defined is re-INVITE (see
Section 14). Other extensions may define different target refresh
requests for dialogs established in other ways.
Dale
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