The other usage of the radio modems are the mobile phones, wi-fi networks and the direct broadband satellite connection. Choosing a modem for your computer requires some technical knowledge. Regarding the computer, the V.92 is the latest modem standard. It includes the latest technology and is compatible with the old computer systems. V.92 comes in two types internal and external.
An internal modem plugs into the PCI slot inside your computer and the external modem goes outside your computer. There are different categories of the modems such as hardware, software and the controller-less. A standard modem contains two parts, analog section and the digital section.
DSL Modems
A DSL modem is a communication device that is connected with the DSL phone line and is used to provide the high speed internet connectivity. Most of the DSL modems are external and connected to the Ethernet port of the computer and they vary in speed from 64 kb to several megabits per seconds. A DSL modem’s hardware consists of power supply, digital data pump, micro controller, filter, analog chip and the power circuitry.
The most popular manufactures are D-Link, 3Com, FujitSu, Huawei, Alcatel, Sagem, Siemens, Intel and U.S.Robotics. DSL modems manage the sharing of internet connection with the several computers in a network.
Fax Modems
Fax modems are internally and externally to the computer and they are used to modulate and demodulate the data signals. Fax modems come with the communication software to send the faxes and the documents should be in the electronic form. Fax modems send the documents electronically at the speed of 9,600 bps. Fax modems require large disk space to receive the documents on your computer. The major manufacturers of the Fax Modems are Intel, Fujitsu, U.S Robotics, Motorola, Huawei, Alcatel, D-Link and Acer.
Cable Modems
Cable modems are preliminarily used to provide the high speed broadband internet access and they can also be used to provide the VOIP services. They can offer the speed up to 2mbps.