Cisco Systems 1.3.0 manual User Agent to User Agent Call Waiting

	User Agent to User Agent: Call Waiting
Header:	From: UserAgent<sip:5221@192.168.66.1:5060;user=phone>
Header:	To: 5220<sip:5220@192.168.66.180:5060;user=phone>
Header:	Call-ID: 4732a6465cfdffbdc0d38708c0728708@192.168.66.1
Header:	CSeq: 1 ACK
Header:	Content-Length: 0
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	A and B are talking
=================================================================
	C now calls B
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	SIP Headers
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sip-req:	INVITE sip:5220@192.168.66.180:5060;user=phone SIP/2.0 [192.168.66.3:5060-
>192.168.66.180:5060]
Header:	Via: SIP/2.0/UDP 192.168.66.3:5060
Header:	From: UserAgent<sip:5222@192.168.66.3:5060;user=phone>
Header:	To: 5220<sip:5220@192.168.66.180:5060;user=phone>
Header:	Call-ID: 52f78a2b5cfdffbd60c98708a0688708@192.168.66.3
Header:	CSeq: 1 INVITE
Header:	Subject: VovidaINVITE
Header:	Contact: <sip:5222@192.168.66.3:5060;user=phone>
Header:	Content-Type: application/sdp
Header:	Content-Length: 168
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	SDP Headers
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Header:	v=0
Header:	o=- 1089208644 1089208644 IN IP4 192.168.66.3
Header:	s=VOVIDA Session
Header:	c=IN IP4 192.168.66.3
Header:	t=3177769022 0
Header:	m=audio 60335 RTP/AVP 0
Header:	a=rtpmap:0 PCMU/8000
Header:	a=ptime:20
Header:
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	SIP Headers
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sip-res:	SIP/2.0 100 Trying [192.168.66.180:5060->192.168.66.3:5060]
Header:	Via: SIP/2.0/UDP 192.168.66.3:5060
Header:	From: UserAgent<sip:5222@192.168.66.3:5060;user=phone>
Header:	To: 5220<sip:5220@192.168.66.180:5060;user=phone>
Header:	Call-ID: 52f78a2b5cfdffbd60c98708a0688708@192.168.66.3
Header:	CSeq: 1 INVITE
Header:	Content-Length: 0
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	SIP Headers
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sip-req:	INVITE sip:5220@192.168.66.200:5060;user=phone SIP/2.0 [192.168.66.180:5060-
>192.168.66.200:5060]
Header:	Via: SIP/2.0/UDP 192.168.66.180:5060;branch=1
Header:	Via: SIP/2.0/UDP 192.168.66.3:5060
Header:	From: UserAgent<sip:5222@192.168.66.3:5060;user=phone>
Header:	To: 5220<sip:5220@192.168.66.180:5060;user=phone>
Header:	Call-ID: 52f78a2b5cfdffbd60c98708a0688708@192.168.66.3
Header:	CSeq: 1 INVITE
Header:	Proxy-Authorization: Basic 123
Header:	Subject: VovidaINVITE
Header:	Record-Route: <sip:5220@192.168.66.180:5060;maddr=192.168.66.180>
Header:	Contact: <sip:5222@192.168.66.3:5060;user=phone>
Header:	Content-Type: application/sdp
Header:	Content-Length: 168
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	SDP Headers
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Header:	v=0
Header:	o=- 1089208644 1089208644 IN IP4 192.168.66.3
Header:	s=VOVIDA Session
Header:	c=IN IP4 192.168.66.3
Header:	t=3177769022 0

C-83