AT&T DEFINITY 7300 series Manuál s instrukcemi stáhnout pdf (Strana 418)

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GLOSSARY

Covering User

The person at an alternate answering position who answers a

redirected call.

Data Channel

A communications path between two points used to transmit digital

signals.

Data Communications Equipment (DCE)

Refers to a specific RS-232C interface connector configuration. The

DCE devices are designed to interface directly (pin-for-pin) to Data

Terminal Equipment (DTE).

The transmit and receive pins are

reversed from that of a DTE interface. A modem is an example of a

DCE device.

Data Dial Code (DDC)

The extension number of a digital data endpoint.

Data Endpoint

Two general groups:

those having a DTE-type interface, which

encompasses almost all of the data terminal devices, and those

having a DCE interface, which are primarily modems. It should be

noted that within each category, control interfaces may vary. Refer

to Analog Data Endpoint and Digital Data Endpoints for additional

information.

Data Module

A DCE device providing a standard interface between data

equipment and a TN726 Data Line CP port on the switch. Only ADU

Models Z3A1, Z3A2, Z3A4, and Z3A5 are supported.

Data Terminal Equipment (DTE)

DTE refers to a specific RS-232C connector termination designed to

connect directly to a DCE-type connection. Typically associated with

video display terminals, printers, and computers that either originate

or terminate a data transmission path.

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