Difference Between A Router And A Modem
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We had a question sent to us via email asking about the difference between a modem and a router. Most people know that both pieces somehow move or transmit data, but they are not sure just how or which does what part of the function. The main difference between a modem and a router is that a modem transmits information from the "outside" (a phone line or cable line) to the computer and the router then takes the information from the modem's connection and "routes" (forwards or shares) it to one or more computers.


The modem allows the computer (or PC) to connect to the user's Internet Service Provider (ISP). The ISP can be a cable company or phone company and the choice for the user may depend on required speed, price, or personal preference. Essentially, the modem connects the computer to an outside line by translating the signals sent to and from the computer into information the computer can use.


The router is the device that then functions as an interface between two networks to forward the information between the ISP's router and the computer, based on IP addresses. This information is usually referred to as data packets. Routers function between two or more networks and communicate with one another to distribute information to the correct computer or server.

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