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Thanks again Mike, you know a lot about this man. Are there other devices besides Adtrans that you could connect directly to the T1 loop? For example a Cisco Router, or any other vendor's equipment? Or is it a proprietary type system?
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There are many different types of equipment Adtran makes, CSU's included. Most T1 equipment has options to provide the CSU/DSU functionality, and generally can interface directly with a T1. Adtran and Cisco are two of the bigger vendors of equipment that does connect directly.
But Adtran also make network equipment that doesn't - they make standad ethernet firewall/routers.... So without model numbers or something, we couldn't tell you for sure what it was.
Rob Cashman Customer Support Engineer
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The name of the device is "Adtran Total Access 624". This Adtran device connects to an eight port switch that is made by Zonenet( some cheep brand I think).
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The 624 contains a router, among other things.
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Does the adtran have anything else connected to it? The total access 624 is a channel bank. Channel banks can be used to pull out a number of analog lines from the T1's 24 channels, and use the remaining channels for data. A 624 has capacity for 24 analog lines, they're also made as low as 8 lines - 608. It seems a little over-kill to use a 624 if not using all the lines....
But anyway, that definitely proves that you have a pure T1 entering your space.
nfc's correct, it has a router, but it's not a particularly useful one.
The Zonenet "switch" may well be the "missing" firewall. My Netgear Prosafe FVS318 has a built-in 8 port switch, and many home-style cable firewalls have 4 port switches.
Rob Cashman Customer Support Engineer
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