Is a cable modem really a modem?

Is a cable modem really a modem?

The cable modem bridges Ethernet frames between a customer LAN and the coax network. Technically, it is a modem because it must modulate data to transmit it over the cable network, and it must demodulate data from the cable network to receive it.

Is a modem A demodulator?

Short for modulator/demodulator, a modem is a hardware device that allows a computer to send and receive information over telephone lines. Similarly, when an analog signal is received, the modem converts it back (“demodulates” it) to a digital signal.

Why does my cable modem need a phone line?

Cable modems can provide Internet service. You don’t need a phone line in order to get Internet service. The cable modem is able to transform the cable signal into an Ethernet signal, which can be attached to a port on your computer.

DO modems convert analog signals?

A Modem is a physical hardware device that functions to receive data from an internet service provider through a medium of connection such as cables, wires, or fiber optics. By receiving the analog signals carrying data packets, a modem is able to convert this into a digital signal that your device can use. …

What is the difference between a cable modem and a router?

Your modem is a box that connects your home network to the wider Internet. A router is a box that lets all of your wired and wireless devices use that Internet connection at once and also allows them to talk to one another without having to do so over the Internet.

Why is modem called modulator and demodulator?

Modem is short for “Modulator-Demodulator.” It is a hardware component that allows a computer or another device, such as a router or switch, to connect to the Internet. It converts or “modulates” an analog signal from a telephone or cable wire to digital data (1s and 0s) that a computer can recognize.

What is the more accurate name for a cable modem?

A CMTS is the proper name for a cable modem.

Can you have Internet without phone line?

Virgin Media are the only major ISP (internet service provider) who offer broadband without a phone line.

Does landline have to be plugged into modem?

You must have a physical connection. Even if you have a wireless phone, the phone base must be plugged into a phone port. With this setup, the modem uses a technology know as voice over internet protocol (VoIP) to turn audio data into signals which can be transferred via the internet.

What are cable modems used for?

cable modem, modem used to convert analog data signals to digital form and vise versa, for transmission or receipt over cable television lines, especially for connecting to the Internet. A cable modem modulates and demodulates signals like a telephone modem but is a much more complex device.

How does a modem make its connection?

A modem modulates and demodulates electrical signals sent through phone lines, coaxial cables, or other types of wiring; in other words, it transforms digital information from your computer into analog signals that can transmit over wires, and it can translate incoming analog signals back into digital data that your …

How does a modem work?

The word “modem” is a shortened form of “modulator, demodulator,” so yes, that’s exactly what is happening, a digital data stream is converted at the transmitting end into an analog representation of that data, then converted back into its digital form by the receiving modem.

What is the difference between cable modems and telephone modems?

The two are connected by coaxial cable or a combination of coaxial and fiber-optic cabling known as HFC (hybrid fiber coaxial). Cable modems are faster (provide higher bandwidth) than traditional (ADSL) broadband telephone modems and their speed doesn’t degrade as you get further from the phone exchange (as traditional broadband connections do).

What is the purpose of a DSLAM port on a modem?

The purpose of that port of yours on the DSLAM, and also the DSL modem is to combine the computer (digital) signal and the voice (analog) signal into one pair of copper wires. Back at the CO, the two signals are filtered out.

What is modmodem router?

Modem router helps to connect more than one computer to a single DSL line for Internet access. This type of routers provides the Network Address Translation (NAT), which is required to support several computers.