In addition any trunk or station can be programmed to ring a keyset with a pre-
defined ring tone (1–8) or a single line port with a predefined cadence (1–5) selec-
tion. This provides for easy identification of special lines or extensions that ring
your phone.
DOOR LOCK RELEASE (PROGRAMMABLE)
After answering a call from the door phone, users can dial a code to activate a
contact closure. This can be used to operate a customer-provided electric door
lock release mechanism. The contact closure timer is programmable from 100–
2500 ms.
DOOR PHONES
The door phone interface module (DPIM) provides for connection of a door phone
to a DLI port. Pressing the button on the door phone produces a distinctive ring
(three short rings repeated) at the assigned station or station group. If not answered
within a programmable time, the system releases the door phone and stops the
ringing. Stations may call the door phone directly and monitor the surrounding
areas. Door phones follow the system ring mode plan.
E & M TIE LINES (T1/COPPER)
Your office can be connected to another office with a tie line. Use it to make calls to
stations in the other system. If programming allows, you can access lines in the
other system to make outside calls. Tie line calls can be put on hold, transferred
and conferenced in the same way as are other outside calls. Users accessing the
tie line from the other system can get a line in your system and make outgoing
calls. These calls can be controlled by assigning a dialing class to the tie line. Your
local telephone company may use E&M tie lines to provide DID service. In this
case these tie lines can be programmed to follow the DID translation table.
Translated E & M tie line calls have Day and Night routing capabilities.
EXECUTIVE BARGE-IN (OVERRIDE)
The feature allows specially programmed stations with a barge-in key to override
the automatic privacy of another station or outside trunk. Programming allows barge-
in with or without a warning tone. Stations may also be programmed as “secure”
so that they cannot be barged-in on.
WITH WARNING TONE
When the barge-in with tone option is set, the barging-in keyset has its microphone
on and the barged-in on station receives an override display. A double burst of
warning tone sounds and repeats every ten seconds. This feature does not work
from single line sets.
WITHOUT WARNING TONE
When the barge-in without tone option is set, the barging-in keyset has its micro-
phone muted and the barged-in on station does not receive an override display.
4.13
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