Siemens HIPATH 8000 - Manual (Page 37)

Technical Overview
37
Registration
Registration is the process by which centralized SIP Server/Registrars be-
come aware of the existence and readiness of an endpoint to make and
receive calls. The phone supports a number of configuration parameters to
allow this to happen.
Registration can be authenticated or un-authenticated depending on how
the server and phone is configured. For unauthenticated registration the
following parameters must be set on the phone:
• Terminal number Æ page 224 or Terminal name Æ page 223.
• SIP Routing Æ page 216 set to "Server".
• SIP Server/Registrar address Æ page 214 configured (IP address or
host name).
In this mode the server must pre-authenticate the user. This procedure is
server specific and is not described here.
The phone supports the Digest authentication scheme and requires the
following parameters to be configured in addition to those for unauthenti-
cated registration:
• SIP user ID Æ page 218.
• SIP Password Æ page 215.
• SIP Realm (optional) Æ page 215.
For authentication to work the server must have created an account for the
user with matching user ID, password and Realm parameters.
Below are some specific details relating to SIP registration configuration
parameters found on the phone:
• Terminal Number Æ page 224
• Terminal Name Æ page 223
• Register by Name Æ page 210
• SIP Routing Æ page 216
• SIP Registrar (SIP Addresses) Æ page 214
• SIP Realm Æ page 215
• Registration Timer Æ page 211
If registration has not succeeded at startup or registration fails after having
been previously successfully registered the phone will try to re-register ev-
ery 60 seconds. This is not configurable.
Note that registration only occurs when the SIP Routing mode
Æ page 216 is set to "Server".
Note a challenge from the server for authentication information is
not only restricted to the REGISTER message but can also occur in
response to other SIP messages eg INVITE.