Modem FAQs:


Q: Is a modem one that turns the digital data of a computer into modulated electrical signal for transmission over telephone lines and demodulated by another modem at the receiver side to recover the digital data?

A: Yes.

Q: Are modems generally classified by the amount of data they can send in a given unit of time, usually expressed in bits per second , or bytes per second?

A: Yes, Modems can also be classified by their symbol rate, measured in baud.

Q: Were modems widely available for $250?

A: Yes.

Q: Are modems often referred to as transparent or smart?

A: Yes.

Q: Were modems once the most popular means of Internet access in the U.S.?

A: Yes, but with the advent of new ways of accessing the Internet, the traditional 56K modem is losing popularity.

Q: Were modems noted in product reviews through July?

A: Yes, and within six months they worked equally well with variations dependent on local connection characteristics.

Q: Is a modem still widely used by customers in rural areas?

A: Yes, where DSL, cable, satellite, or fiber optic service is not available, or they are unwilling to pay what these companies charge.

Q: Were modems described by AT&T's Bell Labs as conforming to their newly published Bell 101 dataset standard?

A: Yes.

Q: Are modems polled in a round robin manner to collect small amounts of data from scattered locations that do not have easy access to wired infrastructure?

A: Yes.

Q: Is a modem a stripped-down modem that replaces tasks traditionally handled in hardware with software?

A: Yes.

Q: Were modems generally operated like their earlier acoustic versions – dialling and other phone-control operations were completed by hand?

A: Yes, and using an attached handset.

Q: Are modems regular modems that are capable of recording or playing audio over the telephone line?

A: Yes.

Q: Are modems still only 600 baud?

A: Yes, The bit rate increases were achieved by defining four or eight distinct symbols, which allowed the encoding of two or three bits per symbol instead of only 1. The use of smaller shifts had the drawback of making each symbol more vulnerable to interference, but improvements in phone line quality at the same time helped compensate for this.

Q: Is a modem a simple interface designed to act as a digital-to-analog and an analog-to-digital converter?

A: Yes.

Q: Are modems cheaper than traditional modems because they have fewer hardware components?

A: Yes.

Q: Are modems most commonly used by utility companies for data collection?

A: Yes.

Q: Is a modem connected?

A: Yes.

Q: Are modems also available?

A: Yes, and including satellite and power line modems.

Q: Are modems connect cards?

A: Yes, and USB modems for mobile broadband and cellular routers.

Q: Is a modem that a cellular router normally allows multiple people to connect to it?

A: Yes, while a modem is designed for one connection.

Q: Are modems the Hayes Smartmodem?

A: Yes, and introduced in 1981.

Q: Were modems common during the 1970s?

A: Yes.

Q: Are modems the concept of fallback?

A: Yes, or speed hunting, allowing them to communicate with less-capable modems.

Q: Is a modem seldom used in this case?

A: Yes, and modems are also used for high-speed home networking applications, especially those using existing home wiring.

Q: Was a modem an otherwise standard 103A 300-bit/s direct-connect modem?

A: Yes, but it was attached to a small microcontroller that watched the data stream for certain character strings representing commands.

Q: Are modems about US$200?

A: Yes, and compared to $100 for 33K modems.