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E
E&M Tie Lines
In telephony, a separate pair of leads to your station which are used by system
operators for signaling and supervisory purposes.
Exclusive Hold
Only the telephone placing the call on hold can retrieve it.
Executive Override Breaking into a conversation at a busy called telephone. This
intrusion is announced by several quick tone bursts over the conversation.
H
Handsfree Answer Inhibit
A telephone can be set to block voice calls sent to it over the speaker.
Hookflash
Action that occurs when the TAP button is pressed. Needed for activating host
system features.
Hookswitch
The switch on a telephone which, when depressed manually or by the handset,
disconnects a call.
I
IMIST
Module which allows the connection of an external device to a Comdial digital
telephone.
Industry Standard Telephone (IST)
Analog telephone with only a basic 12 button keypad and no advanced features
Intercom
An internal communication system that allows you to dial another station at your
office or location without connecting to the outside telephone system.
K
Keypad
Buttons
0 through 9 , * and # used for dialing.
82 Non-LCD Station User’s Guide
Glossary GCA70-313