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RAD’s copper modems (also know as short range modems, short haul modems and line drivers) offer connectivity at a variety of data rates and distances over 2-wire or 4-wire.

Ideal for deployment within buildings, campuses or cities, the copper modems support a range of digital interfaces, including V.24, V.35, X.21, RS-530, V.36/RS-449, Ethernet (bridge), or G.703. Some of the copper modems come with an optional built-in router.

RAD also has a line of SHDSL modems for Ethernet extension.
plz visit it
RAD.com

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Posted by waqasahmad

It can be orders of magnitude faster than dialup

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Posted by suresh123

4-Wire:

The speed of a 4-wire modem depends on the bandwidth of the underlying medium as well as the encoding used. It can be orders of magnitude faster than dialup. For example, DSL modems have an aggregate throughput of 6.4 Mbps.

DialUp Modem:

ial-up Internet Access is a form of Internet access via telephone lines.[1] The user's computer or router uses an attached modem connected to a telephone line to dial into an Internet service provider's (ISP) node to establish a modem-to-modem link, which is then used to route Internet Protocol packets between the user's equipment and hosts on the Internet.And using dialup modem users can achieve a speed of 56kbps.

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Posted by sagitraz