What is a cable modem?
Cable modem is a device that provides a high -speed internet connection via a cable TV that serves as an Internet service provider (ISP). The cable modem requires a subscription to the cable internet service and will not work simply by connecting to the cable TV (CATV). Externally, the cable modem resembles the DSL modem. The coaxial cable, which brings the CATV digital signal, provides an internet service channel upstream and downstream. This does not interfere with TV, because there are plenty of "real estate" on the coaxial cable cable or the bandwidth for processing both television and internet signals.
The cable company often offers an internet service to the subscriber cable modem. At the end of the service contract, it may be provided free of charge, or a small monthly equipment fee may be. In any case, the cable modem will be an external modem that has been configured in advance.Bel signals. If the subscriber prefers, he can also buy an internal or external cable modem, commonly available from computer retailers. CATVs can provide a list of compatible manufacturers and instructions for cable modem configuration if necessary.
The advantage of buying a cable modem is that you can choose a model with the desired functions. For example, a cable modem with a built -in network and a router allows you to share Internet connection with other computers throughout the house or office. Some models also come up with a USB port for a quick and easy connection of another computer that may not have an Ethernet port. This is particularly useful for older laptops.
If the subscriber decides to provide a cable modem and does not have a built -in switch and router, the subscriber will be able to share the connection, you must buy these devices separately. Costs are likely to pSaccken or in some cases more than buy a cable modem with an already built -in switch and router. Therefore, many people consider a small investment to buy their own equipment.
Cable Internet service usually offers speeds of 1.5 megabits per second. Like DSL, it is always "always on" connection, but unlike DSL, the cable customer may not be within a short range of home office. For this reason, a cable internet service is available in many regions where there is no DSL.
One of the disadvantages of the cable internet service is that speed is influenced by how many people in the immediate area of the subscriber use the Internet service at once. Many people who use this service at the same time can feed the zone width sources, slowing the connection to the cable modem. DSL is affected by this because the subscriber uses his telephone line for the Internet service.
Cable modems are available wherever computers are sold. If you choose to buyOwn modem, make sure it meets your CATV requirements. If the connection is shared via a network or office, it will also affect the type of network - cable or wireless - to influence what type of modem you should buy.