Glossary and Abbreviations
domain-controlled station on a call
A station that is active on a call, and which provides event reports over one or two
DOSS
Delivery Operations Support System
DOT
Duplication Option Terminal
DPM
Dial Plan Manager
DPR
DS1
Digital Signal Level 1
DS1C
Digital Signal
DS1 CONV
Digital Signal
DSI
Digital signal interface
DSU
Data service unit
DTDM
DTE
DTGS
Direct Trunk Group Select
DTMF
DTS
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.
duplication
The use of redundant components to improve availability. When a duplicated subsystem fails, its backup redundant system automatically takes over.
duplication option
A system option that duplicates the following: control carrier containing the SPE, EI circuit packs in carriers,
Issue 5 January 1998 |