Cisco Systems 1.3.0 manual User Agent to User Agent Call Waiting

User Agent to User Agent: Call Waiting

Header:Route: <sip:5220@192.168.66.180:5060;maddr=192.168.66.180>,<sip:5220@192.168.66.180:5060;maddr=1 92.168.66.180>,<sip:5221@192.168.66.1:5060>

Header:		Content-Type: application/sdp
Header:		Content-Length: 126
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		SDP Headers
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Header:		v=0
Header:		o=- 944563072 944563072 IN IP4 192.168.66.2
Header:		s=VOVIDA Session
Header:		c=IN IP4 0.0.0.0
Header:		t=3177769026 0
Header:		m=audio 3456 RTP/AVP 0
Header:		VI
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		SIP Headers
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sip-res:	SIP/2.0 200	OK [192.168.66.1:5060->192.168.66.2:5060]
Header:		Via: SIP/2.0/UDP 192.168.66.1:5060
Header:		From: <sip:5220@192.168.66.180:5060;user=phone>
Header:		To: 5221<sip:5221@192.168.66.2:5060;user=phone>
Header:		Call-ID: 4732a6465cfdffbdc0d38708c0728708@192.168.66.1
Header:		CSeq: 2 INVITE
Header:		Contact: <sip:5220@192.168.66.2:5060;user=phone>
Header:		Content-Type: application/sdp
Header:		Content-Length: 131
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		SDP Headers
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Header:		v=0
Header:		o=- 944563072 944563072 IN IP4 192.168.66.1
Header:		s=VOVIDA Session
Header:		c=IN IP4 192.168.66.1
Header:		t=3177769026 0
Header:		m=audio 3456 RTP/AVP 0
Header:		60
=================================================================
	B acknowledges C
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		SIP Headers
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sip-res:	SIP/2.0 200 OK [192.168.66.2:5060->192.168.66.180:5060]
Header:		Via: SIP/2.0/UDP 192.168.66.180:5060;branch=4
Header:		Via: SIP/2.0/UDP 192.168.66.180:5060;branch=2
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:		Contact: <sip:5220@192.168.66.2:5060>
Header:		Record-Route:

<sip:5220@192.168.66.180:5060;maddr=192.168.66.180>,<sip:5220@192.168.66.180:5060;maddr=1

92.168.66.180>
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 192.168.66.2
Header:	s=VOVIDA Session
Header:	c=IN IP4 192.168.66.2
Header:	t=3177769022 0
Header:	m=audio 60345 RTP/AVP 0
Header:	a=rtpmap:0 PCMU/8000
Header:	a=ptime:20

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SIP Headers

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C-86