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Many first-timers may confuse a cable modem with a dial-up analog
modem. A cable modem is actually a bridge that hooks up to the same
cable line that your local cable TV provider has. From there, a
network adapter or USB cable is needed to connect the cable modem to
your computer (depending on the model). Most units are now DOCSIS
compliant, making for a good selection when purchasing one. Cable
modems can usually transfer about 42 Mbps down and 10 Mbps up. But
transfer rates vary and are limited by the cable ISP. Pricing for
cable modem service runs roughly $100 - 150 for installation and $39
- $50 / month for the connection. Cable modem rental can cost an
additional $15 / month. Many ISPs are providing deals on purchasing
equipment from them, and some will credit you if you already have
the necessary hardware. |
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Part of the DOCSIS standard allows for the cable ISPs to regulate
the bandwidth you use. They use the MAC address built into the unit
to send a series of commands to program it. Some research has shown
that cable modems cannot be programmed to "hack" the settings and set
your own bandwidth limits. However, if it is possible, you can
implement a Cisco cable modem router, such as the UBR924. This
special unit is a cable modem and router in one unit; usually, the
cable modem and router are separate units. It is fully programmable
using Cisco's IOS. However, the unit has to be changed from bridge
mode to router mode. For most people, the sophisticated interface
may be too much to deal with. Unless you are going to get a business
connection, you should get a normal unit. |
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Cable modems come in a variety of sizes and shapes. Some are easier
to read and have more LEDs to indicate various activities. The
Linksys cable modems have five LEDs: one for power, one for cable
connection, one for ethernet adapter activity, one for the cable
modem receiving data, and one for the cable modem sending data. This
offers a real-time effective way to monitor its activity. |
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