| What is a Computer or Laptop Cable Modem? | | | | method, bandwidth is also sometimes measured |
| | | | in the Kbps (thousands of bits or kilobits |
| While the terms Computer or laptop are often | | | | per second) range or the Gbps (billions of |
| used interchangeably, A cable modem is a | | | | bits or gigabits per second) range. |
| device that enables you to hook up your | | | | |
| personal computer. A modem (from modulate | | | | Although the bit is a unit of the binary |
| and demodulate) is a device that modulates an | | | | number system, bits in data communications |
| analogue carrier signal to encode digital | | | | are discrete signal pulses and have |
| information, and also demodulates such a | | | | historically been counted using the decimal |
| carrier signal to decode the transmitted | | | | number system. |
| information. Faster modems are used by | | | | |
| Internet users every day, notably cable | | | | DSL or ADSL Modem. Features and Description! |
| modems and ADSL modems. In | | | | |
| telecommunications, "radio modems" transmit | | | | DSL or ADSL modems are rarely internal to the |
| repeating frames of data at very high data | | | | computer but instead are wired to the |
| rates over microwave radio links. Some | | | | computer's Ethernet port, or occasionally its |
| microwave modems transmit more than a hundred | | | | USB port, while voiceband modems are usually |
| million bits per second. Optical modems | | | | built inside the computer. DSL modems are |
| transmit data over optic fibers. Most | | | | intended for particular protocols and |
| intercontinental data links now use optic | | | | sometimes won't work on another line even |
| modems transmitting over undersea optical | | | | from the same company, while most voiceband |
| fibers. | | | | modems use international standards and can |
| | | | "fall back" to find a standard that will |
| Computer modem comes in a range of different | | | | work. |
| prices. You can find some form of cheap | | | | |
| computer modems from as little as Rs.800 to | | | | Features |
| over Rs.80,000 Price ranges for computer | | | | |
| modems general depend on the manufacturers | | | | • Router functionality that uses |
| and the type of ISP connection that you have. | | | | Network Address Translation (NAT) to share |
| There are many quality manufacturers of | | | | the connection. |
| computer modems, like US Robotics, Hayes, | | | | |
| 3com, Xircom, Creative Labs and many more. | | | | • An 802.11b or 802.11g wireless access |
| | | | point. |
| What is Mbps? | | | | |
| | | | • Voice over IP functionality including |
| Mbps stands for millions of bits per second | | | | Quality of Service (priority control for data |
| or megabits per second and is a measure of | | | | flows between users) |
| bandwidth (the total information flow over a | | | | |
| given time) on a telecommunications medium. | | | | • Dynamic Host Configuration Protocol |
| Depending on the medium and the transmission | | | | (DHCP) server. |