Specifications

Power Failure Transfer
A power failure line connection is available for install-
ing an industry-standard telephone such as a Comdial
model 2500-xx. The installed power-fail telephone is
automatically connected directly across line 1 by the
system whenever there is an AC power failure. Nor-
mal origination and reception of calls through the
power-fail telephone is possible during an AC power
failure. The power-fail telephone is automatically dis-
connected as soon as power is restored.
Power On, Visual Indication
The common equipment has a red LED which
monitors the status of the system, and provides an
“AC power-on” indication.
Prime Line Automatic
If a station is programmed for prime line automatic, the
designated outside line or intercom line will be auto-
matically selected when the handset is taken off hook.
Prime line pick up may be pre-empted by preselecting
another line before lifting the handset. If the prime line
is ringing, it is automatically answered by lifting the
handset. Assign a prime line to a station through sys-
tem or administration programming.
Privacy Release
A line can be made non-private at a particular station
while remaining private at all other stations. This ar-
rangement allows other stations with that line ap-
pearance to join that particular station whenever it is
on the privacy-released line. A line is specified as
private or non-private at a particular station with sys-
tem or administration programming. Also see the dis-
cussions titled Add-on Conference and Automatic
Privacy.
Programmable Buttons
All multiline telephones are equipped with a minimum
of twelve programmable buttons which can be
programmed a line pick-up, auto dial, station speed
dial, and’DSS action. Refer to the discussions titled
Auto Dial, Programmable DSS, And Station Speed
Dial. System or administration programming is used to
assign functions to programmable buttons.
Programmable DSS/BLF
(Direct Station Selection/Busy Lamp Field)
A multiline station user can store true, one-button,
direct station selection (DSS) at any programmable
button location to create a DSS button. When this but-
ton is pressed, any active outside call is automatically
placed on hold and an intercom call is automatically
made to that previously stored station number. The
Description 01 System Features
IMI 66-097
visual indicators of the stations programmed at the but-
ton locations form a busy lamp field (BLF). The BLF
conveys station status to the user. An auto dial num-
ber can also be programmed as a secondary function
at every DSS/BLF memory location. Also refer to the
discussions titled Tone Or Voice S&na//ing (Intercom)
and Auto Dial.
Pull Out Directory
Each desk mounted telephone is equipped with a pull
out directory. This directory can be used for recording
the system speed dial, station speed dial, or other fre-
quently called numbers.
Pulse/Tone Switchable
When rotary dial lines are installed, the user can
switch from pulse (rotary dial signals) to tone (Dual
Tone Multiple Frequency signals - DTMF). This fea-
ture is useful for accessing special circuits requiring
DTMF tones such as banking machines, etc. The sys-
tem is programmed on a per line basis to allow this
feature at all stations. The system or administration
class of service programming enables this feature on
a per line basis.
Ringing Line Preference
The system can be programmed on a per station basis
to provide ringing line preference on all lines
programmed for ringing at a station.
When ringing line preference is enabled at a station,
taking the station off-hook automatically connects it to
any outside line which happens to be ringing at the sta-
tion. A line button will not have to be pressed. The
ability of a particular station to answer a ringing line
without line selection is enabled by the system or ad-
ministration class of service programming.
Secure Off-Hook Voice Announce
With the secure off-hook voice announce (SOHVA) fea-
ture, an announcement can be made from one station
to another station that is off-hook and busy on a call.
The SOHVA announcement is made in a manner that
prevents the distant on-line party from hearing tt or
from hearing the verbal response to it because the
MUTE button must be pressed for reply. The SOHVA
feature is available at stations that are equipped with a
telephone that includes SOHVA capability. The
telephone requires two data-paired station ports to
provide SOHVA operation. Telephone users can
make secure off-hook voice announcements to busy
stations and then transfer calls to them after making
the announcement if they wish. The transferred calls
camp-on at the busy stations and wait to be answered.
To do this, a user performs a normal screened call
transfer procedure but uses the SOHVA method to an-