
E & M Tie Line Support (Extension Hunting)
When an E and M tie line call rings at a station that the installer has disabled though programming
action, the system routes the call through the disabled station’s hunt list until it locates a group
intercom for the call to ring. Should all group intercoms be busy or should no one answer the call in
a programmed number of rings, the system then routes the call along the station’s call forwarding
arrangement. With a hunt list containing up to eight assigned group intercoms and access to each
group intercom available to several system stations, many users have an opportunity to service an E
and M tie line caller. Coupling this flexibility with the station’s call forwarding ability, provides
many chances for system users to service E and M tie line calls. A installer could program a hunt list
and a call forwarding scheme to an unassigned station and provide a designated E and M tie line
termination and routing center. There would be no need to connect a telephone to the station port to
use the feature in this manner. The installer could arrange several E and M tie line termination
centers to service different extension numbers. Each extension number could represent different
calling categories, and ring at different blocks of system stations.
End-to-End DTMF Signaling
The system accepts DTMF tones or digital signals from proprietary telephones and sends them as
DTMF tones through the public telephone network where they are received at a distant end for
computer, voice mail, or other peripheral feature access.
End-to-End Signaling on Intercom
After establishing an intercom call, the system can continue to send and receive dialing signals
(DTMF tones) through the intercom path. This feature can be performed from every station in the
system and is used by peripherals such as an ATI–D–1PT accessory unit for voice mail.
End-to-End Signaling on Lines
After a user has established an outside call, the system can continue to send dialing signals (DTMF
tones) through the public switched network and have them received at the distant end for inward call
completion (bank by telephone, voice mail). Users can perform this conventional, on or off-hook
dialing feature from every station in the system.
Enhanced Night Mode
The digital communications system has flexible ringing assignments for three different time frames:
Day 1, Day 2, and Night modes. This feature allows the user to cycle through these different time
frames manually using a Night button that installers map on their telephones. The button provides
four settings: Day 1, Day 2, Night, and Off. By choosing a Day 1 , Day 2, or Night setting, users
manually select the ringing assignment time frame. By choosing Off, users allow the system to select
the flexible ringing assignments that activate automatically.
96 – Understanding the Features
GCA40–242 General Description
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