DEFINITY ECS Release 8.2
Administrator’s Guide
555-233-506 Issue 1
April 2000
Glossary and abbreviations
1630
domain-controlled split
A split for which Third Party Domain Control request has been accepted. A domain-controlled split provides
an event report for logout.
domain-controlled station
A station for which a Third_Party_Domain_Control request has been accepted. A domain-controlled station
provides event reports for calls that are alerting, connected, or held at the station.
domain-controlled station on a call
A station that is active on a call, and which provides event reports over one or two domain-control associa-
tions.
DOSS
Delivery Operations Support System
DOT
Duplication Option Terminal
DPM
Dial Plan Manager
DPR
Dual-port RAM
DS1
Digital Signal Level 1
DS1C
Digital Signal Level-1 protocol C
DS1 CONV
Digital Signal Level-1 converter
DSIDigital signal interface
DSU
Data service unit
DTDM
Digital-terminal data module
DTE
Data-terminal equipment
DTGS
Direct Trunk Group Select
DTMF
Dual-tone multifrequency
DTS
Disk-tape system
duplicated common control
Two processors ensuring continuous operation of a communications system. While one processor is online,
the other functions as a backup. The backup processor goes online periodically or when a problem occurs.