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Deploying the snom ONE IP Telephone System
514
Scenario 2
REGISTER
1
REGISTER
4
Call Flow
1.
The UAC tries to register the user's SIP address. The Web server (running the
Web site) thinks that the HTTP data stream sent from the UAC was correct,
but access to the URL resource requires the prior use of a proxy server that
needs some authentication which has not been provided, so it responds with a
407 Proxy Authentication Required response.
2.
The user logs in (enters user ID and password) with the proxy server. The UAC
resends the REGISTER method.
3.
The UAS responds with a 200 OK.
Scenario 2
REGISTER sip:itsp.com SIP/2.0
Via: SIP/2.0/UDP 75.150.83.2:5060;branch=z9hG4bK-
79d064228874f311c131a824e14e910f;rport
From: "itsp" <sip:17772830314@itsp.com>;tag=45682
To: "itsp" <sip:17772830314@itsp.com>
Call-ID: niyrncl8@pbx
CSeq: 8042 REGISTER
Max-Forwards: 70
Contact: <sip:17772830314@75.150.83.2:5060;transport=udp;line
=19ca14e7>;+sip.instance="<urn:uuid:7e96105b-8c8b-440e-a0aa-
07add8c80727>"
SIP/2.0 407 Proxy Authentication Required
v: SIP/2.0/UDP 75.150.83.2:5060;branch=z9hG4bK-
79d064228874f311c131a824e14e910f;rport=5060
407 Proxy Authenication Required
200 OK
3
6
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