Cisco Systems 1.3.0 manual SIP IP Phone to SIP IP Phone Call Return

	SIP IP Phone to SIP IP Phone: Call Return
Header:	m=audio 29956 RTP/AVP 0 101
Header:	a=rtpmap:0 pcmu/8000
Header:	a=rtpmap:101 telephone-event/8000
Header:	a=fmtp:101 0-11
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	SIP Headers
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sip-res:	SIP/2.0 200 OK [192.168.26.180:5060->192.168.26.10:5060]
Header:	Via: SIP/2.0/UDP 192.168.26.10:5060
Header:	From: <sip:6711@192.168.26.10:5060>
Header:	To: <sip:6715@192.168.26.180:5060>;tag=c39430001978b0-0;user=phone
Header:	Call-ID: c2943000-3e262-b4b1-2e323931@192.168.26.10
Header:	CSeq: 101 INVITE
Header:	Contact: <sip:6715@192.168.26.11:5060>
Header:	Record-Route:

<sip:6715@192.168.26.180:5060;maddr=192.168.26.180>,<sip:6715@192.168.26.180:5060;maddr=1

92.168.26.180>
Header:	Server: Cisco IP Phone/ Rev. 1/ SIP enabled
Header:	Content-Type: application/sdp
Header:	Content-Length: 220
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	SDP Headers
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Header:	v=0
Header:	o=CiscoSystemsSIP-IPPhone-UserAgent 9104 19747 IN IP4 192.168.26.11
Header:	s=SIP Call
Header:	c=IN IP4 192.168.26.11
Header:	t=0 0
Header:	m=audio 29956 RTP/AVP 0 101
Header:	a=rtpmap:0 pcmu/8000
Header:	a=rtpmap:101 telephone-event/8000
Header:	a=fmtp:101 0-11
-----------------------------------------------------------------
	SIP Headers
-----------------------------------------------------------------
sip-req:	ACK sip:6715@192.168.26.180:5060 SIP/2.0	[192.168.26.10:50373-
>192.168.26.180:5060]
Header:	Via: SIP/2.0/UDP 192.168.26.10:5060
Header:	From: <sip:6711@192.168.26.10:5060>
Header:	To: <sip:6715@192.168.26.180:5060>;tag=c39430001978b0-0;user=phone
Header:	Call-ID: c2943000-3e262-b4b1-2e323931@192.168.26.10
Header:	Route: <sip:6715@192.168.26.180:5060;maddr=192.168.26.180>,
<sip:6715@192.168.26.11:5060>
Header:	CSeq: 101 ACK
Header:	Content-Length: 0
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	SIP Headers
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sip-req:	ACK sip:6715@192.168.26.11:5060 SIP/2.0	[192.168.26.180:5060-
>192.168.26.11:5060]
Header:	Via: SIP/2.0/UDP 192.168.26.180:5060;branch=4
Header:	Via: SIP/2.0/UDP 192.168.26.180:5060;branch=2
Header:	Via: SIP/2.0/UDP 192.168.26.10:5060
Header:	From: <sip:6711@192.168.26.10:5060>
Header:	To: <sip:6715@192.168.26.180:5060>;tag=c39430001978b0-0;user=phone
Header:	Call-ID: c2943000-3e262-b4b1-2e323931@192.168.26.10
Header:	CSeq: 101 ACK
Header:	Content-Length: 0
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	SIP Headers
-----------------------------------------------------------------
sip-req:	BYE sip:6715@192.168.26.180:5060 SIP/2.0	[192.168.26.11:50783-
>192.168.26.180:5060]
Header:	Via: SIP/2.0/UDP 192.168.26.11:5060
Header:	From:
<sip:6715@192.168.26.180:5060>;user=phone;tag=c39430001978b0-0
Header:	To: <sip:6711@192.168.26.10:5060>
Header:	Call-ID: c2943000-3e262-b4b1-2e323931@192.168.26.10
Header:	User-Agent: Cisco IP Phone/ Rev. 1/ SIP enabled
Header:	CSeq: 102 BYE

C-73