livebox voip - via a different modem?

  drewstersmith 01:40 22 Nov 2008

Is it possible to connect to the adsl line with another modem/router (BT business hub) and then connect the orange livebox to the modem/router via an ethernet cable in order to get the livebox to connect to the internet and to be able to use its on-board voip socket? Any ideas? Not quite a complete novice, but am a bit stumped by the options available on the BT 2700 router -'enable Public Routed Subinterface' and 'Public Proxied Subnet (NAT/Routed)' any help gratefully received, as I would like to continue using the voip facility, even though the livebox as a modem sucks on long lines.....

  mgmcc 11:52 22 Nov 2008

I think it unlikely that you will be able to use the Livebox in conjunction with another router for your VOIP service. Although a "Cable/DSL" router that doesn't incorporate a modem can be "daisy-chained", by connecting its ethernet WAN port to a main router's LAN port, a combined "Router & ADSL Modem" has a phone connection for its WAN port so it can't be connected as a secondary router.

A "Modem/Router" can be connected "LAN port to LAN port" to a main router, its DHCP server disabled and then used as a basic Network Switch or Wireless Access Point (but not a "router"), but doing it this way may not let you run the VOIP service. If you already have all of the hardware, then try it and see.

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