SECTION 9—GLOSSARY

This section provides explanations for acronyms and definitions of terms used in this manual.

ADU: (Asynchronous Data Unit)

ARS: (Automatic Route Selection)

ASCII: (American Standard Code for Information Exchange)

Administer

To access and change the parameters associated with the services or features of the system.

Analog Data Endpoint

Data endpoints with customer provided built-in or stand-alone modems. They do not require the use of data modules (asynchronous data units) and are addressed similar to any voice terminal by PDC. These end-points connect to tip/ring type circuit pack ports.

Analog Voice Terminals

Voice terminals served by a single-line tip and ring circuit (2500 series and 7101A voice terminals or industry standard Dual Tone Multifrequency equivalent).

Appearance

See Call Appearance.

Asynchronous Data Transmission

A scheme for transmitting data where each character is preceded by a start bit and followed by a stop bit, thus permitting data elements to occur at irregular intervals. This type transmission is advantageous when transmission is not regular (characters typed at a keyboard).

Asynchronous Data Unit (ADU)

A data communications equipment (DCE) type device that allows direct connection between RS-232C equipment and the digital switch via ports on the Data Line Circuit Pack (TN-726).

Attendant

The operator of the attendant console.

9 - 1

Page 440
Image 440
AT&T AT&T manual Administer, Analog Voice Terminals, Appearance, Asynchronous Data Transmission, Asynchronous Data Unit ADU