What kind of different modems are there?

Answer 1

Answer

These modems are in use now.

Modem Who uses it Provided by

Cable: Cable Provider: Time Warner's Road Runner/Adelphia

DSL: Phone Company: SBCYahoo/BellSouth

56k: Dial up: AOL/NetZERO

Answer

Of the top of my head:
Standard telephony modems, from 200 baud to 56k
ISDN, at about 122k or so
DSL, Cable, Satellite, Powerline...there are probably also a lot of subtypes that I've Never Heard Of.

T1 and T3 are both examples of high-speed telephone lines. Both of them may be used to provide broadband internet access. Technically, a T1 connection is a fiber-optic or copper line that is separate from the regular phone line. However, the T1 line can be used for both broadband Internet access in addition to phone purposes.

T1 and T3 lines are commonly used by businesses because they offer very fast data transfer rates. This is appealing to businesses that need to transfer large amounts of data each day. Additionally, T lines provide very reliable forms of Internet access, with "always on" capability and very few incidences of lost Internet connections. In terms of speed, T1 lines operate at 1.5 Mbps, and T3 lines operate at 44.6 Mbps. In other words, T3 lines are about 30 times faster than T1. These high speeds are very useful for heavy Internet traffic situations as well as for situations in which a network must be accessed by a larger number of users. A T1 line operating at full capacity can accommodate up to 24 users working at 64 Kbps. http://www.broadbandinfo.com/cable/broadband/what-are-t1-and-t3-internet-connections-and-who-uses-them.html

Answer 2

Back in the day a modem was internal and started at very low data tranfers. Today they have 56K v.90/#. These are the best for phone line data transfers and are limited to this speed because of the FCC. They tranmit their own frequency. External modems are either older than the earth or the latest thing for comcast high speed internet. If for comcast you will travel at the speed of light on the WEB like Me. Merry Christmas.

Answer 3

External vs. Internal Modems

External Modem: This is a modem separated from the system unit in the computer case. It is connected to the serial port of the computer by means of a cable. It is connected to the telephone wall jack by another cable.

Internal Modem: An internal modem is a circuit board (a modem card) that can be added to the system unit of the computer. It takes one of the expansion slots.

Standard vs. Intelligent Modems

Standard Modems: Most modems used today are called standard modems. These modems are usually operated by commands entered from a microcomputer keyboard. Users control the functions (dialing, etc.) of a modem through the keyboard. Modems may use different command languages to control their functions, but most modems (called "Hayes compatible") use a popular language developed by a company "Hayes Microcomputer Products, Inc." The command ATDSX4, for example, indicates that pay attention (AT), dial stored telephone number (DS), and then display the progress of the call (X4).

Intelligent Modems: Intelligent modems are also called advanced modems. These modems can accept new instructions and then respond to the commands while transmitting data and information. These can be done by microprocessor chips and internal read only memory (ROM) contained in the modem. Of course, these modems are more expensive.

Short-Haul and Wireless Modems

Short-Haul Modems: Short- haul modems are devices that transmit signals down the cable through any COM1 port. They sometimes are called modem eliminators, because they do not require an external power source. They are also called line drivers that can send data for a distance of more than one mile. This type of modem can be used within or across several buildings in a company or a university campus.

Wireless Modems: Wireless modems transmit the data signals through the air instead of by using a cable. They sometimes are called a radiofrequency modem. This type of modem is designed to work with cellular technology, and wireless local area networks. Wireless modems are not yet perfected, but the technology is rapidly improving

Answer 4

There are 3 types of modems, their is the

• Cable Modem
• DSL Modem
• Dial Up Modem (inside older computers)

Answer 5

the different kinds of modem are the external modem, internal modem, fax modem and ISDN modem

Answer 6

two types, internal & external modem.