Instruction manual

DEFINITY® Business Communications System and GuestWorks® Issue 6
Overview
555-231-208
Issue 1
April 2000
Glossary and Abbreviations
GL-10
covering user
A person at a coverage point who answers a redirected call.
CP
Circuit pack
CPE
Customer-premises equipment
CPN
Called-party number
CSA
Canadian Safety Association
CSD
Customer-service document
CSSO
Customer Services Support Organization
D
DAC
1. Dial access code
2. See digital-to-analog converter (DAC)
.
data channel
A communications path between two points used to transmit digital signals.
data-communications equipment (DCE)
The equipment (usually a modem, data module, or packet assembler/disassembler) on the network
side of a communications link that makes the binary serial data from the source or transmitter
compatible with the communications channel.
data link
The configuration of physical facilities enabling end terminals to communicate directly with each
other.
data module
An interconnection device between a BRI or DCP interface of the switch and data terminal
equipment or data communications equipment.
data port
A point of access to a computer that uses trunks or lines for transmitting or receiving data.
data rate
See bit rate
.
data service unit (DSU)
A device that transmits digital data on transmission facilities.
data terminal
An input/output (I/O) device that has either switched or direct access to a host computer or to a
processor interface.