Industry Standard Telephone User’s Guide
Call Transfer
Transferring a call from one station to another. The transfer can be screened, i.e., you find out who is calling and announce them to the party being called; or unscreened, i.e., you transfer the call without identifying the calling party to the called party.
Caller ID
Allows station users to view the originating line number of incoming calls before they are answered.
Camp On
Process that allows a user to wait for a busy or idle line to become available and immediately be called back by the sys- tem; also allows users to send a tone to busy telephone to notify the station that a call is waiting.
Class of Service (COS) Programming
Customized programming of your system by the installer that establishes the basic operating parameters of the system and individual stations.
D
Direct Inward System Access (DISA)
An enhancement option that allows outside callers to directly call a station or access certain internal system features, includ- ing all line groups and ARS. To prevent fraudulent access and unauthorized use, the caller must use an authorization code and system access code to gain access to outside lines as well as many of the advanced telephone features.
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