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C-66
SIP IP Phone to SIP IP Phone: Call Return
Header: To: <sip:6711@192.168.26.180:5060>;tag=c29430001e2620-0
Header: Call-ID: c3943000-2978b-aa0e-2e323931@192.168.26.11
Header: Server: Cisco IP Phone/ Rev. 1/ SIP enabled
Header: CSeq: 100 INVITE
Header: Content-Length: 0
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SIP Headers
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sip-res: SIP/2.0 180 Ringing [192.168.26.180:5060->192.168.26.220:6074]
Header: Via: SIP/2.0/UDP 192.168.26.220:6074;branch=102
Header: Via: SIP/2.0/UDP 192.168.26.180:5060;branch=2
Header: Via: SIP/2.0/UDP 192.168.26.11:5060
Header: From: <sip:6715@192.168.26.11:5060>
Header: To: <sip:6711@192.168.26.180:5060>;tag=c29430001e2620-0
Header: Call-ID: c3943000-2978b-aa0e-2e323931@192.168.26.11
Header: CSeq: 100 INVITE
Header: Server: Cisco IP Phone/ Rev. 1/ SIP enabled
Header: Content-Length: 0
-----------------------------------------------------------------
SIP Headers
-----------------------------------------------------------------
sip-res: SIP/2.0 180 Ringing [192.168.26.220:6074->192.168.26.180:5060]
Header: Via: SIP/2.0/UDP 192.168.26.180:5060;branch=2
Header: Via: SIP/2.0/UDP 192.168.26.11:5060
Header: From: <sip:6715@192.168.26.11:5060>
Header: To: <sip:6711@192.168.26.180:5060>;tag=c29430001e2620-0
Header: Call-ID: c3943000-2978b-aa0e-2e323931@192.168.26.11
Header: CSeq: 100 INVITE
Header: Server: Cisco IP Phone/ Rev. 1/ SIP enabled
Header: Content-Length: 0
-----------------------------------------------------------------
SIP Headers
-----------------------------------------------------------------
sip-res: SIP/2.0 180 Ringing [192.168.26.180:5060->192.168.26.11:5060]
Header: Via: SIP/2.0/UDP 192.168.26.11:5060
Header: From: <sip:6715@192.168.26.11:5060>
Header: To: <sip:6711@192.168.26.180:5060>;tag=c29430001e2620-0
Header: Call-ID: c3943000-2978b-aa0e-2e323931@192.168.26.11
Header: CSeq: 100 INVITE
Header: Server: Cisco IP Phone/ Rev. 1/ SIP enabled
Header: Content-Length: 0
-----------------------------------------------------------------
SIP Headers
-----------------------------------------------------------------
sip-req: CANCEL sip:6711@192.168.26.180 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@192.168.26.11
Header: To: <sip:6711@192.168.26.180>
Header: Call-ID: c3943000-2978b-aa0e-2e323931@192.168.26.11
Header: User-Agent: Cisco IP Phone/ Rev. 1/ SIP enabled
Header: CSeq: 100 CANCEL
Header: Content-Length: 0
-----------------------------------------------------------------
SIP Headers
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sip-res: SIP/2.0 200 OK [192.168.26.180:5060->192.168.26.11:5060]
Header: Via: SIP/2.0/UDP 192.168.26.11:5060
Header: From: <sip:6715@192.168.26.11:5060>
Header: To: <sip:6711@192.168.26.180:5060>
Header: Call-ID: c3943000-2978b-aa0e-2e323931@192.168.26.11
Header: CSeq: 100 CANCEL
Header: Content-Length: 0
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SIP Headers
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sip-req: CANCEL sip:6711@192.168.26.220:6074;user=phone SIP/2.0 [192.168.26.180:5060-
>192.168.26.220:6074]
Header: Via: SIP/2.0/UDP 192.168.26.180:5060;branch=2
Header: From: <sip:6715@192.168.26.11:5060>