4.10 Extension for Remote Users

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The following examples show the extension header field ms-user-logon-data. The format for this header field is specified in section 2.2.16.

The following example shows a response to a REGISTER request. The ms-user-logon-data header field indicates that the user is a remote user.

SIP/2.0 200 OK
From: <sip:alice@contoso.com>;tag=1b3884236d;epid=e06accb078
To: <sip:alice@contoso.com>;tag=D4EF81E564DD858A326CC721EF4A8FAF
Call-ID: 5899a88068934f8385a0b0b5e03be045
CSeq: 3 REGISTER
ms-user-logon-data: RemoteUser
Authentication-Info: NTLM rspauth="010000000000000046DD35D06323180F", srand="64306136", snum="1", opaque="0A79BAD2", qop="auth", targetname="ocsserver.contoso.com", realm="SIP Communications Service"
RecordRoute: <sip:server1.contoso.com:5061;transport=tls;lr;ms-received-cid=3AFDE300>
Contact: <sip:192.0.2.4:2904;transport=tls;ms-opaque=2cd64e3000;ms-received-cid=1D8AF00>;expires=2905;+sip.instance="<urn:uuid:75ab1008bcc45544924daa177c824291>";gruu="sip:alice@contoso.com;opaque=user:epid:CBCrdcS8RFWSTaoXfIJCkQAA;gruu"