For local registration at the LANCOM, it is initially sufficient for the user to send a valid VoIP domain to the SIP proxy. The internal VoIP domains of the LANCOM VoIP Router are valid, as are all domains entered in a SIP line.
- For SIP terminal devices in the LAN (SIP telephone or SIP softphone), the domain is entered in the configuration. There is no need for an entry as a SIP user in the configuration of the LANCOM. This variant is known as "automatic registration".
- The domain cannot be entered into ISDN terminal equipment; instead, ISDN users have to be registered in the LANCOM configuration with a corresponding entry as an ISDN user .
- To prevent unknown subscribers from registering, authentication at the SIP proxy can be set as a prerequisite to local registration (local authentication). In this case, an entry as a SIP or ISDN user in the LANCOM configuration is essential.
Note: Automatic registration without entering a password is restricted to the
SIP users in the LAN. SIP users in the WAN require an appropriate user
entry and authentication by password.