Express 4110-4120 ISDN Router-Bridge User Manual (Rev A)

The Express 4110/4120 is a standalone device that links two Local Area Networks (LANs) using a high-speed ISDN public network or leased two-wire line. It also contains two plain old telephone service (POTS) connectors used for voice/modem applications. This guide provides an overview of the device, installation, configuration, and operation instructions.

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