When configuring the LANCOM, the following steps must be carried out:
- Set up the line to the SIP provider
- Enabling the ISDN interface and assigning MSNs to the internal numbers in the LANCOM VoIP Router
- Creating ISDN users
- Adapt the call routing table
Detailed instructions on configuring the LANCOM:
- Under LANconfig, start the setup wizard for configuring the VoIP Call Manager. Enable the options 'SIP provider', 'ISDN phone system' and 'ISDN users'.
- Configure the device as described in the preceding examples:
- Unique local VoIP domains
- one line to a SIP provider
- Enable the external ISDN outside line and the internal ISDN bus in order to use the VoIP functionality. Enter all external MSNs for the ISDN outside line in the ISDN mapping table with their assignment to the internal numbers in the VoIP range.
- Enter all connected ISDN terminal devices as ISDN users with the
following values:
- Telephone number / SIP name: This number will be assigned to the ISDN terminal device as an "internal number". The telephone structure will remain clear if you use the same internal number for a terminal device here as it uses in its own ISDN environment.
- MSN/DDI: Enter the external MSNs for the ISDN outside line here; this will also be assigned to the terminal device by the ISDN PBX.
- Enable spontaneous outside line access for ISDN and SIP users in order to keep the subscribers' telephone behavior as consistent as possible.
- The call routing table suggested by the setup wizard automatically allows spontaneous outside line access for ISDN and SIP users and .