- Interconnect two PBXs at separate sites through IP network with FXO gateways
- Interconnect two or more extension lines at separate sites through IP network with FXS gateways
- Expanding PBX extensions to remote sites through IP network
In this application note, the second one popular application and related configurations are described.
In this scenario, two or more extension lines located at different sites need to be interconnected through IP network, without any SIP server or IP-PBX.
Note: A static public IP address is required if the IP network is Internet.
Configuration on Gateway A
On Routing > Routing Table page, input the routing rules for directing calls from extension lines 8000-8003 to IP address 18.104.22.168, as follows:
Configuration on Gateway B
On Routing > Routing Table page, input the similar routing as follows.