Cisco Systems 1.3.0 Manual De Usuario

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