C-6

SIP Phone: Registration
Registration: Digest Authentication

Call Flow Diagram Figure C-3 shows a SIP IP phone registering with the Redirect server. The

User Agent Marshal server is using the Digest authentication method.

Figure C-3. Call Flow Diagram: SIP IP Phone Registration — Digest

Authentication

Call Trace The following call trace shows a SIP IP phone registering with the Redirect

server. The User Agent Marshal server is using the Digest authentication

method.

-----------------------------------------------------------------
SIP Headers
-----------------------------------------------------------------
sip-req: REGISTER sip:192.168.26.180 SIP/2.0 [192.168.26.10:50373-
>192.168.26.180:5060]
Header: Via: SIP/2.0/UDP 192.168.26.10:5060
Header: From: sip:6711@192.168.26.180
Header: To: sip:6711@192.168.26.180
Header: Call-ID: c2943000-1e262-513-2e323931@192.168.26.10
Header: CSeq: 100 REGISTER
Header: Contact: <sip:6711@192.168.26.10:5060>
Header: Expires: 3600
Header: Content-Length: 0
-----------------------------------------------------------------
SIP Headers
-----------------------------------------------------------------
sip-res: SIP/2.0 401 Unauthorized [192.168.26.180:5060->192.168.26.10:5060]
Header: Via: SIP/2.0/UDP 192.168.26.10:5060
Header: From: <sip:6711@192.168.26.180:5060>
Header: To: <sip:6711@192.168.26.180:5060>
Header: Call-ID: c2943000-1e262-513-2e323931@192.168.26.10
Header: CSeq: 100 REGISTER
Header: WWW-Authenticate: Digest
realm=vovida.com,algorithm=MD5,nonce=966645751
Header: Content-Length: 0
-----------------------------------------------------------------
SIP Headers
-----------------------------------------------------------------
sip-req: REGISTER sip:192.168.26.180 SIP/2.0 [192.168.26.10:50373-
>192.168.26.180:5060]
Header: Via: SIP/2.0/UDP 192.168.26.10:5060
Header: From: sip:6711@192.168.26.180
Header: To: sip:6711@192.168.26.180
Header: Call-ID: c2943000-1e262-513-2e323931@192.168.26.10
Header: CSeq: 101 REGISTER
SIP Phone UA Marshal
1. REGISTER
2. 401
3. REGISTER
Redirect Server
4. REGISTER
5. 200
6. 200