User`s manual

U.S. Robotics I-modem Command Reference
Glossary • Page G-10
Telecommunications Standards Sector (TSS). ITU-T replaces CCITT. For example, the
Bell 212A standard for 1200 bps communication in North America was referred to as
CCITT V.22. It is now referred to as ITU-T V.22.
central ofÞce (CO)
The facility to which devices, such as telephones, fax machines, modems, and terminal
adapters, within a speciÞc geographic area of a public telephone network are connected.
central ofÞce switch
A device, located at the telephone companyÕs central ofÞce, to which devices, such as tele-
phones, fax machines, modems, and terminal adapters
are connected.
character
A representation, coded in binary digits, of a letter, number, or other symbol.
characters per second (cps)
A data-transfer rate generally estimated from the bit rate and the character length.
For example, at 2400 bps, 8-bit characters with start and stop bits (for a total of 10 bits per
character) will be transmitted at a rate of approximately 240 characters per second (cps).