hi, everybody,
I am reading some examples in rfc2543. but i am confused by the
following one:
==================================================================
C->F: INVITE sip:[EMAIL PROTECTED] SIP/2.0
From: sip:[EMAIL PROTECTED]
To: Alice <sip:[EMAIL PROTECTED]>
Call-ID: [EMAIL PROTECTED]
CSeq: 1 INVITE
The local firewall at caller.com happens to be overloaded and thus
redirects the call from Charlie to a secondary server S:
F->C: SIP/2.0 302 Moved temporarily
From: sip:[EMAIL PROTECTED]
To: Alice <sip:[EMAIL PROTECTED]>
Call-ID: [EMAIL PROTECTED]
CSeq: 1 INVITE
Contact: <sip:[EMAIL PROTECTED]:5080;maddr=spare.caller.com>
Based on this response, Charlie directs the same invitation to the
secondary server spare.caller.com at port 5080, but maintains the
same Request-URI as before:
C->S: INVITE sip:[EMAIL PROTECTED] SIP/2.0
From: sip:[EMAIL PROTECTED]
To: Alice <sip:[EMAIL PROTECTED]>
Call-ID: [EMAIL PROTECTED]
CSeq: 2 INVITE
================================================================
the second INVITE are exactly the same. the only difference is C->F and
C->S. does it means anything? I thought the UAC will take the maddr
parameter in the response as the new REQUESE-URI, won't it?
cheers.
lei
begin:vcard
n:liang;lei
tel;cell:07787 520163
tel;work:01483 873610,EXT 3610
x-mozilla-html:TRUE
org:CCSR;E.E.
adr:;;;;;;
version:2.1
email;internet:[EMAIL PROTECTED]
title:Mr
x-mozilla-cpt:;29504
fn:lei liang
end:vcard
