ISDN isnt really an option.
Does anyone know what is the smallest number range available from telstra? do they do blocks of 25 or 50?
We have 8 x 100 ext number ranges, we used to have some in via 4 POTS, (as a fallback measure), this type of setup, with say 3 lines would work ok for in and outbound calls for the PABX?
Can you get telephone handsets that have RJ45 5terminations, that will plug into one of those netgear routers on the other end of a VPN connection, give it an IP, configure ext/IP in pabx and you now have a full indial telelphone extension at remote location?
I want FXO for handling the connection of PBX to telco network via POTS?
Aside from the detail of PBX config, the above is essentially it?