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SURFBOARD SB2100D EXTERNAL CABLE MODEM
Last updated: 10/5/99

My Internet Service Provider (ISP) recently installed one of these cable MODEMs in my store to replace both the dial-up MODEM and internal cable MODEM (CM) in my computer and used to connect to the one-way cable Internet service available here in town.  We are all waiting patiently for two-way Internet service on the cable, but that won't happen for 1-2 years and will require a substantial capital outlay by the ISP to upgrade the cable infrastructure.  When it does happen the SB2100D cable MODEMs, which can operate with both one-way and two-way cable systems, will be ready for the change.

The SB2100D CM was mainly installed here as part of our ISPs effort to upgrade the cable system to the Data Over Cable Service Interface Specifications (DOCSIS).  Part of this standard implements automated configuration and management from the "headend" (ISP end of the network).  A tech goes on site, installs an Ethernet Adapter and sets-it-up in Windows to use the TCP/IP protocol, connects a CAT5 network cable between the network and the CM, boots-up the computer, and turns-on the CM.  The CM automatically connects to the ISP, and downloads everything to configure the CM, establishes Internet Protocol (IP) connectivity using the Dynamic Host Configuration Protocol (DHCP) to assign an IP address to network adapter, and connects to the Internet.  That's all there is to it.  Other than the software for the network adapter, no software comes with the CM to the customer's site.

The SB2100D has four LEDs on the front (Power, local Ethernet Activity light, Phone, and Error).  It has On/Off power switch, a jack for the power adapter, diagnostic port for ISP equipment,  an Ethernet link active LED, 10BASET Ethernett RJ45 jack, RJ11 phone line jack, and a cable connector.  It would be nice if the CM had an addition RJ11 jack to plug-in a telephone.

I received a preliminary  version of the User Manual.  It is brief, if not sparse, to the point, fairly well illustrated, and dwells on the Windows Ethernet adapter configuration.  The user doesn't have much to do with the installation of the CM.

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