Requirements
- LANCOM connected to the LAN and WAN, an ISDN TE interface is linked
to the ISDN NTBA.
- The Internet connection has been set up by means of a VPN tunnel,
as has the network connection between the two locations. All terminal
devices can contact each other with the IP addresses used.
- A dialing plan with a unique internal telephone number for each piece
of terminal equipment to be connected. For each site, a separate number
range is used; in this example, the internal numbers for location A begin
with a '1' and the internal numbers for location B begin with a '2'.
- Each site has a SIP provider account.