Modem Rack?

First off I'm a network guy, not a phone guy. I inherited a network and was recently asked the question if we can get rid of a certain phone line that was hardly ever in use..only has like one call a month on it if even that. I trailed that line down and found out it went to a modem rack. The device is shown on the link below:

MODEM RACK

The problem is, I have no idea what it is or what it does. I see it has four phone lines going into it, (this included the particular phone line I was trailing.) So I have no idea if I should get rid of it....any idea what it could be used for?


I have a picture of it below too. It has some type of switch connected to it. The only two lines plugged into the switch are coming from the back of the Modem. The Modem also has a Ethernet wire plugged into our lan(and of course the 4 phone lines I was speaking about earlier).

Modem
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Pancake_EffectAsked:
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Paul-BCommented:
looks like a ZDX Modem rack for housing stand alone modems which then bridge to a gateway. This would be used by like an ISP or corporate to allow people to dial in and connect to the network. More popular in times prior to widespread broadband. Whether you need it or not is hard to say. You might try disconnecting for a while and see what happens before you run off and completely get rid of it :)
Pancake_EffectAuthor Commented:
So it's essentially an old school VPN device? We have a ASA Cisco 5510 for all our VPN's right now, would that deem this device obsolete pretty much?

Thanks!
Pancake_EffectAuthor Commented:
I also e-mailed the manufacture asking what it does, he just sent me two links. One being the one I already found and have linked above, and this one: Second link from rep
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Pancake_EffectAuthor Commented:
I took a picture of what the  ZDXModemRack has inside of it. It looks like a couple fax modem things. I'll be honest, I've never messed with faxes, these were already set up when I got here. I'm not sure what these are because our dedicated fax machines throughout our facility just plugs directly into the phone jacks, any idea what these are used for?:


Modems
Paul-BCommented:
in a sense yes. It allow dial up modems to connect into the network.

Like I said i would try taking it out and set it aside for a while before you permanently get rid of it.

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Pancake_EffectAuthor Commented:
Thanks for the help, and will do.
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