Registration – Siemens HIPATH 8000 User Manual

Page 37

Technical Overview

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:

• 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 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:

• SIP Registrar (SIP Addresses) Æ page 214

• 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

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.