Carrier
———-
The tone that the modem sends over a phone line before any data is
sent on it. This tone has a fixed frequency and a fixed amplitude.
It is then modified to indicate data.
Character
————-
Here used about a letter, a number or another typographical symbol
or code.
CCITT ——- The Consultative Committee for International Telephony and Telegraphy. An international consultative committee, organized by the United Nations. Membership includes Telephone, governmental Post, and Telegraph Authorities, scientific and trade associations, and private companies. CCITT is part of the International Telecommunications Union, a United Nations treaty organization based in Geneva, Switzerland. CCITT sets international communications recommendations. These are often adopted as standards. It also develops interface, modem, and data network recommendations. The X.25 protocol for access to packet-switched networks was originally a recommendation of CCITT. A wide range of CCITT documents is available through The Teledoc database of The International Telecommunication Union (ITU):
* CCITT and CCIR administrative documents
* lists of contributions (substantive input/proposals)
to CCITT and CCIR study groups
* lists of CCITT reports and Recommendations
(i.e., standards)
* summaries of CCITT new or revised Recommendations
* CCITT and CCIR meeting schedules and other
information concerning Study Groups structures
and activities.
For information, write to shaw@itu.arcom.ch or bautista@itu.arcom.ch
The database is at teledoc@itu.arcom.ch .
COM port ———— A COM port (or communication port) is a communications channel or pathway over which data is transferred between remote computing devices. MS-DOS computers may have as many as four COM ports, COM1, COM2, COM3, and COM4. These are serial ports most often used with a modem to set up a communications channel over telephone lines. They can also be used to send data to a serial printer, or to connect a serial mouse.
Conference ————— Also called SIG (Special Interest Group), Forum, RoundTable, Echo. A conference is an area on a bulletin board or online service set up as a mini board. Most conferences have separate message bases and often also file libraries and bulletins. Conferences are focused on topics, like politics, games, multimedia and product support.
Connect time —————— A term used for the hours, minutes, and seconds that a user is connected to an online service. On several commercial services, users have to pay for connect time.
CPS —- Characters per second. See Bits per second.
Data
——
Information of any kind, including binary, decimal or hexadecimal
numbers, integer numbers, text strings, etc.