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If i use a telephone splitter at an adsl line and connect a VPN test modem and the existing modem to the output of the line splitter,can i get two network with different static ip address? I know this is not a best practice as it can results in collisions. But i need to check a VPN modem/router before sending this to a remote branch? So if i can create a different static ip adress on the VPN modem, i can connect few computers to this modem and establish VPN channels to the exsiting modem. Will this setup work? Thanks in advance.

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up vote 3 down vote accepted

No it will not work. DSL lines require a dedicated copper pair from the modem back to the port in the CO DSLAM.

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damn you're fast! – SpacemanSpiff Apr 30 '12 at 0:31
And that was typed on my phone. :) – EEAA Apr 30 '12 at 0:33
Thank You Very Much. – ryju Apr 30 '12 at 1:10

DSL is not a collision-detect system where you can just connect arbitrary nodes. It is a point to point link on which one DSLAM and one modem exists. In other words, you can never attach more than one modem (or DSLAM) to a single ADSL circuit; you'd need your ISP to provision another physical circuit.

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Thank You very much. – ryju Apr 30 '12 at 1:10

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