Voice over IP Device Problem

I currently have a home network with a linux box being used as the gateway
and firewall device for the rest of the network.

I just signed up with a Voice over IP company and I am having problems
getting their device to work with my network. They recommend that I place
their device between the cable modem and the gateway device. When I do that
the V/IP device works correctly, but I loose internet access for my network.

If I connect their device to my router, internet access works but their
device never gets out to the internet.

Any ideas on what I should do next?
--
Mark Jacobs
----
Always listen to experts. They'll tell you what can't be
done and why. Then do it.
----
LAZARUS LONG

I am presuming you use SIP protocol for VOIP. SIP has major problems
working behind a firewall that does NAT. You could plug a hub in between
your gateway and firewall, then plug your VOIP device in there... problem
with that is that your device is unprotected and you will need multiple IP
Addresses. Also have a look at

http://www.voip-info.org/wiki-Nat+and+VOIP

I use a voip service provider that has a VOIP proxy that caters for NAT

On Thu, 01 Jul 2004 12:20:41 -0400, Mark Jacobs wrote:

> I currently have a home network with a linux box being used as the gateway
> and firewall device for the rest of the network.
>
> I just signed up with a Voice over IP company and I am having problems
> getting their device to work with my network. They recommend that I place
> their device between the cable modem and the gateway device. When I do that
> the V/IP device works correctly, but I loose internet access for my network.
>
> If I connect their device to my router, internet access works but their
> device never gets out to the internet.
>
> Any ideas on what I should do next?