Subject: [SIP] What relationship between Call leg and CSeq header?

From: 許鴻基(hchsu) <[email-masked]>
Date: Tue, 12 Dec 2000 10:11:53 +0800

Hi! Each Advanced:

      From the document: draft-ietf-sip-call-flow-01.txt section 3.1.1
wrote:

	User A   --------INVITE--------> User B  (step1)
	UserA   <-------100 Trying------ User B (step2)
	
	From step1 to step, I think that Call-ID should not change, but the
document wrote 
               Call-ID from [email-masked] change to [email-masked]

	Is it correcnt?

      To make clear:

	What relationship is between call  leg and CSeq header?
	A "call" life is defined  when  client send the first INVITE to the
final response.
	(It would contain more than one transaction.)
	So, when the "call" create, it should use the same Call-ID except
re-INVITE happen.

	Is this correct?

        Who can help me to make clear those points? 

	Thanks !

Acer Hsu
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       Hsu, Hung-Chi - Call me "Acer"... 
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