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In this example, Alice, Bob, and Carol are in a conference and Alice ejects Carol from it.
Figure 5: Alice ejects Carol from the conference
Alice sends the deleteUser request to the focus to eject Carol.
INFO sip:alice@contoso.com;gruu;opaque=app:conf:focus:id:7ECB5F9BFFB1F343B36775DBA09E8038 SIP/2.0 Via: SIP/2.0/TLS 10.56.64.122:2157 Max-Forwards: 70 From: <sip:alice@contoso.com>;tag=58b76ebb1c;epid=bd4bd366c2 To: <sip:alice@contoso.com;gruu;opaque=app:conf:focus:id:7ECB5F9BFFB1F343B36775DBA09E8038>;tag=3C150080 Call-ID: cfc48d02676c47379c7083eb783ad2ab CSeq: 2 INFO User-Agent: UCCP/2.0.6362.0 OC/2.0.6362.0 (Microsoft Office Communicator) Supported: timer Proxy-Authorization: Kerberos qop="auth", realm="SIP Communications Service", opaque="4EBBA7AE", crand="e9a45dde", cnum="133", targetname="sip/M17-OCG.topa.contoso.com", response="602306092a864886f71201020201011100ffffffff6bc0b1f134b8369e09f6e0791f085db7" Content-Type: application/cccp+xml Content-Length: 477 <?xml version="1.0"?> <request xmlns="urn:ietf:params:xml:ns:cccp" xmlns:mscp="http://schemas.microsoft.com/rtc/2005/08/cccpextensions" C3PVersion="1" to="sip:alice@contoso.com;gruu;opaque=app:conf:focus:id:7ECB5F9BFFB1F343B36775DBA09E8038" from="sip:alice@contoso.com" requestId="63022864"> <deleteUser> <userKeys confEntity="sip:alice@contoso.com;gruu;opaque=app:conf:focus:id:7ECB5F9BFFB1F343B36775DBA09E8038" userEntity="sip:carol@contoso.com" /> </deleteUser> </request>
The focus responds that the command has been accepted for processing.
SIP/2.0 202 Accepted Authentication-Info: Kerberos rspauth="602306092A864886F71201020201011100FFFFFFFF86443316ED4CA391BB37E9718D648540", srand="5EA04670", snum="172", opaque="4EBBA7AE", qop="auth", targetname="sip/M17-OCG.topa.contoso.com", realm="SIP Communications Service" From: "Alice"<sip:alice@contoso.com>;tag=58b76ebb1c;epid=bd4bd366c2 To: <sip:alice@contoso.com;gruu;opaque=app:conf:focus:id:7ECB5F9BFFB1F343B36775DBA09E8038>;tag=3C150080 Call-ID: cfc48d02676c47379c7083eb783ad2ab CSeq: 2 INFO Via: SIP/2.0/TLS 10.56.64.122:2157;received=10.29.107.208;ms-received-port=2157;ms-received-cid=29500 Content-Length: 0
Carol is notified by the focus that she has been forcibly ejected from the conference.
BENOTIFY sip:10.29.107.208:2308;transport=tls;ms-opaque=3c71125d8b;ms-received-cid=200;grid SIP/2.0 Via: SIP/2.0/TLS 10.29.106.52:5061;branch=z9hG4bKBF1B21E7.AE524FDD;branched=FALSE Authentication-Info: NTLM rspauth="0100000000000000B11BC12064D52E88", srand="CFD01F89", snum="212", opaque="5CA5FA8B", qop="auth", targetname="M17-OCG.topa.contoso.com", realm="SIP Communications Service" Max-Forwards: 70 To: <sip:carol@contoso.com>;tag=d468b2a0c0;epid=dceed2edfb From: <sip:alice@contoso.com;gruu;opaque=app:conf:focus:id:7ECB5F9BFFB1F343B36775DBA09E8038>;tag=99000080 Call-ID: 87434074d1244e8d89881d1f8d243783 CSeq: 3 BENOTIFY Event: conference subscription-state: terminated;expires=0;reason=ParticipantRemoved Expires: 0 Content-Length: 0 ms-diagnostics-public: 3118;reason="Participant Removed"
Carol sends a BYE to the focus.
BYE sip:alice@contoso.com;gruu;opaque=app:conf:focus:id:7ECB5F9BFFB1F343B36775DBA09E8038 SIP/2.0 Via: SIP/2.0/TLS 10.56.65.217:2308 Max-Forwards: 70 From: <sip:carol@contoso.com>;tag=dfccec5fb4;epid=dceed2edfb To: <sip:alice@contoso.com;gruu;opaque=app:conf:focus:id:7ECB5F9BFFB1F343B36775DBA09E8038>;tag=0D440080 Call-ID: 1e294f6aa2ff4fccaf796b2e7fb723be CSeq: 2 BYE User-Agent: UCCP/2.0.6362.0 OC/2.0.6362.0 (Microsoft Office Communicator) Proxy-Authorization: NTLM qop="auth", realm="SIP Communications Service", opaque="5CA5FA8B", crand="183d43f6", cnum="144", targetname="M17-OCG.topa.contoso.com", response="01000000b8d32206fa814f9364d52e88" Content-Length: 0
Carol also sends a BYE to the IM MCU.
BYE sip:poola.topa.contoso.com:5061;transport=tls;ms-fe=M17-OCG.topa.contoso.com;ms-role-rs-from;ms-role-rs-to;ms-ent-dest;lr;ms-rgs-cid=200;ms-route-sig=aal-PcEIaipyZlYF3-1w9yVGO7MuY3Nw2L1UuIVQAA SIP/2.0 Via: SIP/2.0/TLS 10.56.65.217:2308 Max-Forwards: 70 From: <sip:carol@contoso.com>;tag=8d9b5cc1fb;epid=dceed2edfb To: <sip:alice@contoso.com;gruu;opaque=app:conf:chat:id:7ECB5F9BFFB1F343B36775DBA09E8038>;tag=740746dec Call-ID: 08501c03562b4515a1ad55e367dd503d CSeq: 2 BYE Route: <sip:poola.topa.contoso.com:5062;transport=tls;ms-fe=M18-OCG.topa.contoso.com> User-Agent: UCCP/2.0.6362.0 OC/2.0.6362.0 (Microsoft Office Communicator) Proxy-Authorization: NTLM qop="auth", realm="SIP Communications Service", opaque="5CA5FA8B", crand="6dc12184", cnum="145", targetname="M17-OCG.topa.contoso.com", response="0100000040676203564268f864d52e88" Content-Length: 0
The focus sends a BYE to Carol.
BYE sip:10.29.107.208:2308;transport=tls;ms-opaque=3c71125d8b;ms-received-cid=200;grid SIP/2.0 Via: SIP/2.0/TLS 10.29.106.52:5061;branch=z9hG4bK84AB2CF9.FE5FB404;branched=FALSE Authentication-Info: NTLM rspauth="010000000000000081CFA34164D52E88", srand="7F2A719B", snum="213", opaque="5CA5FA8B", qop="auth", targetname="M17-OCG.topa.contoso.com", realm="SIP Communications Service" Max-Forwards: 70 From: <sip:alice@contoso.com;gruu;opaque=app:conf:focus:id:7ECB5F9BFFB1F343B36775DBA09E8038>;tag=0D440080 To: <sip:carol@contoso.com>;tag=dfccec5fb4;epid=dceed2edfb Call-ID: 1e294f6aa2ff4fccaf796b2e7fb723be CSeq: 2147483645 BYE Reason: SIP;cause=481;text="Participant Removed" Content-Length: 0 ms-diagnostics-public: 3118;reason="Participant Removed"
The IM MCU also sends a BYE to Carol.
BYE sip:10.29.107.208:2308;transport=tls;ms-opaque=3c71125d8b;ms-received-cid=200;grid SIP/2.0 Via: SIP/2.0/TLS 10.29.106.52:5061;branch=z9hG4bK813470AD.FD03477F;branched=FALSE;ms-internal-info="ca3SzQzTPM7Vg7kxWWw15db-EJmXn9A0d_EddarwAA" Authentication-Info: NTLM rspauth="010000000000000061385D6F64D52E88", srand="461D78BD", snum="214", opaque="5CA5FA8B", qop="auth", targetname="M17-OCG.topa.contoso.com", realm="SIP Communications Service" Max-Forwards: 69 Via: SIP/2.0/TLS 10.29.106.56:18164;branch=z9hG4bK86ed724f;ms-received-port=18164;ms-received-cid=31900 FROM: <sip:alice@contoso.com;gruu;opaque=app:conf:chat:id:7ECB5F9BFFB1F343B36775DBA09E8038>;tag=740746dec TO: <sip:carol@contoso.com>;epid=dceed2edfb;tag=8d9b5cc1fb CSEQ: 2 BYE CALL-ID: 08501c03562b4515a1ad55e367dd503d CONTENT-LENGTH: 0
The focus gives a success response to Carol's BYE request.
SIP/2.0 200 OK Authentication-Info: NTLM rspauth="01000000000000001D5B9E5464D52E88", srand="583C12F1", snum="215", opaque="5CA5FA8B", qop="auth", targetname="M17-OCG.topa.contoso.com", realm="SIP Communications Service" From: "Carol"<sip:carol@contoso.com>;tag=dfccec5fb4;epid=dceed2edfb To: <sip:alice@contoso.com;gruu;opaque=app:conf:focus:id:7ECB5F9BFFB1F343B36775DBA09E8038>;tag=0D440080 Call-ID: 1e294f6aa2ff4fccaf796b2e7fb723be CSeq: 2 BYE Via: SIP/2.0/TLS 10.56.65.217:2308;received=10.29.107.208;ms-received-port=2308;ms-received-cid=200 Content-Length: 0
The IM MCU gives a failure response to Carol's BYE request, because it had already terminated her dialog.
SIP/2.0 481 Dialog does not exist Authentication-Info: NTLM rspauth="01000000372D4F439939FAA764D52E88", srand="7B435466", snum="216", opaque="5CA5FA8B", qop="auth", targetname="M17-OCG.topa.contoso.com", realm="SIP Communications Service" Via: SIP/2.0/TLS 10.56.65.217:2308;received=10.29.107.208;ms-received-port=2308;ms-received-cid=200 FROM: <sip:carol@contoso.com>;tag=8d9b5cc1fb;epid=dceed2edfb TO: <sip:alice@contoso.com;gruu;opaque=app:conf:chat:id:7ECB5F9BFFB1F343B36775DBA09E8038>;tag=740746dec CSEQ: 2 BYE CALL-ID: 08501c03562b4515a1ad55e367dd503d CONTENT-LENGTH: 0 Ms-Diagnostics: 6019;source="M18-OCG.topa.contoso.com";reason="Dialog does not exist";component="ImMcu"
Carol responds with success for the BYE that she received from the focus.
SIP/2.0 200 OK Via: SIP/2.0/TLS 10.29.106.52:5061;branch=z9hG4bK84AB2CF9.FE5FB404;branched=FALSE From: <sip:alice@contoso.com;gruu;opaque=app:conf:focus:id:7ECB5F9BFFB1F343B36775DBA09E8038>;tag=0D440080 To: <sip:carol@contoso.com>;tag=dfccec5fb4;epid=dceed2edfb Call-ID: 1e294f6aa2ff4fccaf796b2e7fb723be CSeq: 2147483645 BYE User-Agent: UCCP/2.0.6362.0 OC/2.0.6362.0 (Microsoft Office Communicator) Proxy-Authorization: NTLM qop="auth", realm="SIP Communications Service", opaque="5CA5FA8B", crand="cae34494", cnum="146", targetname="M17-OCG.topa.contoso.com", response="0100000030303030552db08d64d52e88" Content-Length: 0
Carol responds with success for the BYE that she received from the IM MCU.
SIP/2.0 200 OK Via: SIP/2.0/TLS 10.29.106.52:5061;branch=z9hG4bK813470AD.FD03477F;branched=FALSE;ms-internal-info="ca3SzQzTPM7Vg7kxWWw15db-EJmXn9A0d_EddarwAA" Via: SIP/2.0/TLS 10.29.106.56:18164;branch=z9hG4bK86ed724f;ms-received-port=18164;ms-received-cid=31900 From: <sip:alice@contoso.com;gruu;opaque=app:conf:chat:id:7ECB5F9BFFB1F343B36775DBA09E8038>;tag=740746dec To: <sip:carol@contoso.com>;tag=8d9b5cc1fb;epid=dceed2edfb Call-ID: 08501c03562b4515a1ad55e367dd503d CSeq: 2 BYE User-Agent: UCCP/2.0.6362.0 OC/2.0.6362.0 (Microsoft Office Communicator) Proxy-Authorization: NTLM qop="auth", realm="SIP Communications Service", opaque="5CA5FA8B", crand="ea343736", cnum="147", targetname="M17-OCG.topa.contoso.com", response="010000003030303048aabbdd64d52e88" Content-Length: 0
An update is sent to each participant, after first sending to Alice.
BENOTIFY sip:10.29.107.208:2157;transport=tls;ms-opaque=ae7937d6e6;ms-received-cid=29500;grid SIP/2.0 Via: SIP/2.0/TLS 10.29.106.52:5061;branch=z9hG4bK74B6E95E.6011A72A;branched=FALSE Authentication-Info: Kerberos rspauth="602306092A864886F71201020201011100FFFFFFFFFD50AB313D0DA217BA3A547727FE3C08", srand="E8F4A9CD", snum="173", opaque="4EBBA7AE", qop="auth", targetname="sip/M17-OCG.topa.contoso.com", realm="SIP Communications Service" Max-Forwards: 70 To: <sip:alice@contoso.com>;tag=8ca1c2ecee;epid=bd4bd366c2 Content-Length: 1541 From: <sip:alice@contoso.com;gruu;opaque=app:conf:focus:id:7ECB5F9BFFB1F343B36775DBA09E8038>;tag=0C390080 Call-ID: e4687f7cae464055aae47121f976c941 CSeq: 9 BENOTIFY Content-Type: application/conference-info+xml Event: conference subscription-state: active;expires=3600 <conference-info xmlns="urn:ietf:params:xml:ns:conference-info" xmlns:msacp="http://schemas.microsoft.com/rtc/2005/08/acpconfinfoextensions" xmlns:msav="http://schemas.microsoft.com/rtc/2005/08/avconfinfoextensions" xmlns:msci="http://schemas.microsoft.com/rtc/2005/08/confinfoextensions" xmlns:msdata="http://schemas.microsoft.com/rtc/2005/08/dataconfinfoextensions" xmlns:msim="http://schemas.microsoft.com/rtc/2005/08/imconfinfoextensions" xmlns:ci="urn:ietf:params:xml:ns:conference-info" xmlns:cis="urn:ietf:params:xml:ns:conference-info-separator" entity="sip:alice@contoso.com;gruu;opaque=app:conf:focus:id:7ECB5F9BFFB1F343B36775DBA09E8038" state="partial" version="10"> <users state="partial"> <user entity="sip:carol@contoso.com" state="full"> <display-text>Carol</display-text> <roles> <entry>attendee</entry> </roles> <endpoint entity="{C263F024-15CC-4B33-971D-FCF9BE23BB0D}" msci:session-type="chat" msci:endpoint-uri="sip:carol@contoso.com;opaque=user:epid:d7NL6_mHNFSL3I1rbITi2gAA;gruu"> <status>connected</status> <joining-method>dialed-in</joining-method> <media id="1"> <type>chat</type> </media> <msci:endpoint-capabilities> <msim:endpoint-capabilities> <msim:supported-im-formats>text/rtf application/x-ms-ink image/gif multipart/alternative application/ms-imdn+xml</msim:supported-im-formats> <msim:user-agent>UCCP/2.0.6362.0 OC/2.0.6362.0 (Microsoft Office Communicator)</msim:user-agent> </msim:endpoint-capabilities> </msci:endpoint-capabilities> </endpoint> </user> </users> </conference-info>The same update is sent to Bob.
BENOTIFY sip:10.29.107.208:3346;transport=tls;ms-opaque=28d3eab13b;ms-received-cid=16C000;grid SIP/2.0 Via: SIP/2.0/TLS 10.29.106.56:5061;branch=z9hG4bK8ED5B734.E117FD72;branched=FALSE Authentication-Info: NTLM rspauth="0100000003000000BFBFB46E554C2961", srand="286F1714", snum="121", opaque="6F277244", qop="auth", targetname="M18-OCG.topa.contoso.com", realm="SIP Communications Service" Max-Forwards: 70 To: <sip:bob@contoso.com>;tag=1975ba9368;epid=65a77e620d Content-Length: 1541 From: <sip:alice@contoso.com;gruu;opaque=app:conf:focus:id:7ECB5F9BFFB1F343B36775DBA09E8038>;tag=9A750080 Call-ID: f41a3d199b074484b257db390ef4a60d CSeq: 5 BENOTIFY Content-Type: application/conference-info+xml Event: conference subscription-state: active;expires=3600 <conference-info xmlns="urn:ietf:params:xml:ns:conference-info" xmlns:msacp="http://schemas.microsoft.com/rtc/2005/08/acpconfinfoextensions" xmlns:msav="http://schemas.microsoft.com/rtc/2005/08/avconfinfoextensions" xmlns:msci="http://schemas.microsoft.com/rtc/2005/08/confinfoextensions" xmlns:msdata="http://schemas.microsoft.com/rtc/2005/08/dataconfinfoextensions" xmlns:msim="http://schemas.microsoft.com/rtc/2005/08/imconfinfoextensions" xmlns:ci="urn:ietf:params:xml:ns:conference-info" xmlns:cis="urn:ietf:params:xml:ns:conference-info-separator" entity="sip:alice@contoso.com;gruu;opaque=app:conf:focus:id:7ECB5F9BFFB1F343B36775DBA09E8038" state="partial" version="10"> <users state="partial"> <user entity="sip:carol@contoso.com" state="full"> <display-text>Carol</display-text> <roles> <entry>attendee</entry> </roles> <endpoint entity="{C263F024-15CC-4B33-971D-FCF9BE23BB0D}" msci:session-type="chat" msci:endpoint-uri="sip:carol@contoso.com;opaque=user:epid:d7NL6_mHNFSL3I1rbITi2gAA;gruu"> <status>connected</status> <joining-method>dialed-in</joining-method> <media id="1"> <type>chat</type> </media> <msci:endpoint-capabilities> <msim:endpoint-capabilities> <msim:supported-im-formats>text/rtf application/x-ms-ink image/gif multipart/alternative application/ms-imdn+xml</msim:supported-im-formats> <msim:user-agent>UCCP/2.0.6362.0 OC/2.0.6362.0 (Microsoft Office Communicator)</msim:user-agent> </msim:endpoint-capabilities> </msci:endpoint-capabilities> </endpoint> </user> </users> </conference-info>The final "success" is issued for Alice's deleteUser request.
INFO sip:10.29.107.208:2157;transport=tls;ms-opaque=ae7937d6e6;ms-received-cid=29500;grid SIP/2.0 Via: SIP/2.0/TLS 10.29.106.52:5061;branch=z9hG4bKAFA26818.12DEDCF4;branched=FALSE Authentication-Info: Kerberos rspauth="602306092A864886F71201020201011100FFFFFFFF1DA63C4524C86AACE81AF0D61DB55BB1", srand="F4849582", snum="174", opaque="4EBBA7AE", qop="auth", targetname="sip/M17-OCG.topa.contoso.com", realm="SIP Communications Service" Max-Forwards: 70 Content-Length: 1017 From: <sip:alice@contoso.com;gruu;opaque=app:conf:focus:id:7ECB5F9BFFB1F343B36775DBA09E8038>;tag=3C150080 To: <sip:alice@contoso.com>;tag=58b76ebb1c;epid=bd4bd366c2 Call-ID: cfc48d02676c47379c7083eb783ad2ab CSeq: 1 INFO Content-Type: application/cccp+xml <response xmlns="urn:ietf:params:xml:ns:cccp" xmlns:msacp="http://schemas.microsoft.com/rtc/2005/08/acpconfinfoextensions" xmlns:tns="http://schemas.microsoft.com/rtc/2005/08/avconfinfoextensions" xmlns:mscp="http://schemas.microsoft.com/rtc/2005/08/cccpextensions" xmlns:msci="http://schemas.microsoft.com/rtc/2005/08/confinfoextensions" xmlns:msdata="http://schemas.microsoft.com/rtc/2005/08/dataconfinfoextensions" xmlns:msim="http://schemas.microsoft.com/rtc/2005/08/imconfinfoextensions" xmlns:ci="urn:ietf:params:xml:ns:conference-info" xmlns:cis="urn:ietf:params:xml:ns:conference-info-separator" xmlns:msls="urn:ietf:params:xml:ns:msls" requestId="63022864" C3PVersion="1" from="sip:alice@contoso.com;gruu;opaque=app:conf:focus:id:7ECB5F9BFFB1F343B36775DBA09E8038" to="sip:alice@contoso.com" code="success"> <deleteUser> <conferenceKeys confEntity="sip:alice@contoso.com;gruu;opaque=app:conf:focus:id:7ECB5F9BFFB1F343B36775DBA09E8038" /> <ci:user entity="sip:bob@contoso.com" /> </deleteUser> </response>
Alice sends a 200 OK for the INFO she just received.
SIP/2.0 200 OK Via: SIP/2.0/TLS 10.29.106.52:5061;branch=z9hG4bKAFA26818.12DEDCF4;branched=FALSE From: <sip:alice@contoso.com;gruu;opaque=app:conf:focus:id:7ECB5F9BFFB1F343B36775DBA09E8038>;tag=3C150080 To: <sip:alice@contoso.com>;tag=58b76ebb1c;epid=bd4bd366c2 Call-ID: cfc48d02676c47379c7083eb783ad2ab CSeq: 1 INFO Contact: <sip:alice@contoso.com;opaque=user:epid:XVjJHDlexlmisnhQrAkWqwAA;gruu> User-Agent: UCCP/2.0.6362.0 OC/2.0.6362.0 (Microsoft Office Communicator) Proxy-Authorization: Kerberos qop="auth", realm="SIP Communications Service", opaque="4EBBA7AE", crand="062bc3b8", cnum="134", targetname="sip/M17-OCG.topa.contoso.com", response="602306092a864886f71201020201011100ffffffff9135b124523d72e9f52eff1ae4231214" Content-Length: 0
An update is sent to each participant, after first sending it to Alice.
BENOTIFY sip:10.29.107.208:2157;transport=tls;ms-opaque=ae7937d6e6;ms-received-cid=29500;grid SIP/2.0 Via: SIP/2.0/TLS 10.29.106.52:5061;branch=z9hG4bKCCF83472.D64644E4;branched=FALSE Authentication-Info: Kerberos rspauth="602306092A864886F71201020201011100FFFFFFFFC91491E6E9586D10FDF01BBFF8CABF38", srand="E9DC5768", snum="175", opaque="4EBBA7AE", qop="auth", targetname="sip/M17-OCG.topa.contoso.com", realm="SIP Communications Service" Max-Forwards: 70 To: <sip:alice@contoso.com>;tag=8ca1c2ecee;epid=bd4bd366c2 Content-Length: 790 From: <sip:alice@contoso.com;gruu;opaque=app:conf:focus:id:7ECB5F9BFFB1F343B36775DBA09E8038>;tag=0C390080 Call-ID: e4687f7cae464055aae47121f976c941 CSeq: 10 BENOTIFY Content-Type: application/conference-info+xml Event: conference subscription-state: active;expires=3600 <conference-info xmlns="urn:ietf:params:xml:ns:conference-info" xmlns:msacp="http://schemas.microsoft.com/rtc/2005/08/acpconfinfoextensions" xmlns:msav="http://schemas.microsoft.com/rtc/2005/08/avconfinfoextensions" xmlns:msci="http://schemas.microsoft.com/rtc/2005/08/confinfoextensions" xmlns:msdata="http://schemas.microsoft.com/rtc/2005/08/dataconfinfoextensions" xmlns:msim="http://schemas.microsoft.com/rtc/2005/08/imconfinfoextensions" xmlns:ci="urn:ietf:params:xml:ns:conference-info" xmlns:cis="urn:ietf:params:xml:ns:conference-info-separator" entity="sip:alice@contoso.com;gruu;opaque=app:conf:focus:id:7ECB5F9BFFB1F343B36775DBA09E8038" state="partial" version="11"> <users state="partial"> <user entity="sip:carol@contoso.com" state="deleted" /> </users> </conference-info>
The same update is sent to Bob.
BENOTIFY sip:10.29.107.208:3346;transport=tls;ms-opaque=28d3eab13b;ms-received-cid=16C000;grid SIP/2.0 Via: SIP/2.0/TLS 10.29.106.56:5061;branch=z9hG4bK8FD5B734.557049F6;branched=FALSE Authentication-Info: NTLM rspauth="010000000300000023490E0E554C2961", srand="6498AFAD", snum="122", opaque="6F277244", qop="auth", targetname="M18-OCG.topa.contoso.com", realm="SIP Communications Service" Max-Forwards: 70 To: <sip:bob@contoso.com>;tag=1975ba9368;epid=65a77e620d Content-Length: 790 From: <sip:alice@contoso.com;gruu;opaque=app:conf:focus:id:7ECB5F9BFFB1F343B36775DBA09E8038>;tag=9A750080 Call-ID: f41a3d199b074484b257db390ef4a60d CSeq: 6 BENOTIFY Content-Type: application/conference-info+xml Event: conference subscription-state: active;expires=3600 <conference-info xmlns="urn:ietf:params:xml:ns:conference-info" xmlns:msacp="http://schemas.microsoft.com/rtc/2005/08/acpconfinfoextensions" xmlns:msav="http://schemas.microsoft.com/rtc/2005/08/avconfinfoextensions" xmlns:msci="http://schemas.microsoft.com/rtc/2005/08/confinfoextensions" xmlns:msdata="http://schemas.microsoft.com/rtc/2005/08/dataconfinfoextensions" xmlns:msim="http://schemas.microsoft.com/rtc/2005/08/imconfinfoextensions" xmlns:ci="urn:ietf:params:xml:ns:conference-info" xmlns:cis="urn:ietf:params:xml:ns:conference-info-separator" entity="sip:alice@contoso.com;gruu;opaque=app:conf:focus:id:7ECB5F9BFFB1F343B36775DBA09E8038" state="partial" version="11"> <users state="partial"> <user entity="sip:carol@contoso.com" state="deleted" /> </users> </conference-info>