[Sip] Message Headers

Rehan Khan <Rehan.Khan@bell.ca> Thu, 20 April 2006 14:53 UTC

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From: Rehan Khan <Rehan.Khan@bell.ca>
To: "'sip@ietf.org'" <sip@ietf.org>
Date: Thu, 20 Apr 2006 07:53:00 -0700
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Subject: [Sip] Message Headers
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HI,

Could anyone please tell me what the following means

m:<sip:abc@128.103.XXX.XXX>
	contact binding: <SIP:abc@128.103.XXX.XXX>
		URI: <sip: abc@128.103.XXX.XXX>
			SIP contact address: sip:abc@128.103.XXX.XXX

User-Agent:cisco ICD 1.0.1.26.1

f:<sip:abc@128.103.XXX.XXX>;tag=0h787f 6r
	SIP from address: sip:abc@128.103.XXX.XXX
	SIP tag:0h787f 6r

t:<sip:abc@128.103.XXX.XXX>;
	SIP to address: :sip:abc@128.103.XXX.XXX
L:0

What does these headers imply  ( m, f, t, L). 

Thank you

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