Configuring the LANCOM

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 internal MSNs in the PBX to the internal numbers of the LANCOM VoIP Router
• Adapt the call routing table
  Note: In this example, it is not necessary to configure SIP or ISDN users:
• The SIP users are registered at the LANCOM with the settings created in the terminal equipment (softphone and VoIP telephone).
  • The ISDN devices can be reached via a corresponding entry in the call routing table.

Detailed instructions on configuring the LANCOM:

1. Under LANconfig, start the setup wizard for configuring the VoIP Call Manager. Enable the options 'SIP phone system', 'ISDN phone system' and 'ISDN users'.

1. Configure the device as described in the preceding examples:
   • Unique local VoIP domains
   • one line to a SIP provider
   • ISDN line
2. Adapt the suggested call routing table in order to direct calls to special numbers automatically over the SIP provider's line. The following example shows the entry for international calls.

1. After being adapted, the call routing table should appear as follows:
   
   
   
   
   
   Therefore, for every long distance call, the '0' preceding the number is removed, the call is made via the SIP provider.
2. For all ISDN calls, however, the '0' may not be removed from the destination number because the upstream ISDN PBX requires the '0' to access an outside line! Therefore, adapt the destination number for all entries with the target line 'ISDN'. After being adapted, the call routing table should appear as follows:
   
   
   
   
   
3. In order to allow the ISDN subscribers to be contacted internally by the VoIP users, a standard route is also set up which directs all calls that have not yet been resolved to the ISDN line without changing the numbers. After being adapted, the call routing table should appear as follows:
   
   
   
   
   
   Note: This call routing table is only valid for PBX systems in which the subscribers have to dial '0' to access an outside line. If the PBX uses another mechanism for accessing an outside line, then the table must be adapted accordingly.