Delayed Ringing; Direct Outside Line Appearance; Direct Station Selection/Busy Lamp Field; Distinctive Ringing - Outside Line Calls - Iwatsu ADIX VS Owner's Manual

Delayed Ringing

When an incoming outside line call is not answered within a pre-set time, a
second group of stations start ringing and the ringing signal changes to an
incoming alarm. A delayed ringing assignment can be programmed for
each line. This assignment is the same for both Day and Night modes. If
the line is programmed for attendant outside line intercept, the primary and
delayed ringing stations will stop ringing when attendant intercept occurs.

Direct Outside Line Appearance

Digital Telephones may have Multipurpose buttons programmed as an
outside line for incoming and outgoing calls.
Operation
Lift the receiver
Press the outside line button and you will hear the dial tone

Direct Station Selection/Busy Lamp Field

The Multipurpose buttons on the Digital Telephones may be programmed to
allow one-touch intercom calling to preassigned extensions. These buttons
will provide an indication if the extension programmed to that button is
busy or not. If the extension is busy the light will be lit.
Operation
To place an extension call with one touch:
Lift the receiver
Wait for the dial tone
Press the Direct Station Selection button DSS for the desired
extension

Distinctive Ringing - Outside Line Calls

Each outside line can be assigned one of four available ringing tones. This
feature applies only to Iwatsu Key Telephones.

Distinctive Ringing - ICM/Outside Line

Intercom and outside line calls provide different ringing tones.
Digital Telephone User's Guide - 75