US Robotics COURIER Uživatelský manuál stáhnout pdf (Strana 268)

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).

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US Robotics COURIER Uživatelský manuál Strana 268