Instruction manual
DEFINITY® Business Communications System and GuestWorks® Issue 6
Overview
555-231-208
Issue 1
April 2000
Glossary and Abbreviations
GL-15
ESPA
European Standard Paging Access
ETA
1. Extended Trunk Access
2. Enhanced Terminal Administration
ETN
Electronic tandem network
ETSI
European Telecommunications Standards Institute
extension-in
Extension-In (ExtIn) is the work state agents go into when they answer (receive) a non-ACD call.
extension-out
The work state that agents go into when they place (originate) a non-ACD call.
extension
A 1- to 5-digit number by which calls are routed through a communications system or, with a
Uniform Dial Plan (UDP), through a private network.
external call
A connection between a communications system user and a party on the public network or on
another communications system in a private network.
F
FAC
Feature Access Code
facility
A telecommunications transmission pathway and associated equipment.
facility-associated signaling (FAS)
Signaling for which a D-channel carries signaling only for those channels on the same physical
interface.
FAS
Facility-associated signaling
FCC
Federal Communications Commission
FEAC
Forced Entry of Account Codes
feature
A specifically defined function or service provided by the system.
feature button
A labeled button on a telephone or attendant console used to access a specific feature.
fiber optics
A technology using materials that transmit ultrawideband electromagnetic light-frequency ranges
for high-capacity carrier systems.