876 Matrix PRASAR UCS System Manual
For instructions on programming these keys, see “DSS Key Settings” under “Configuring Matrix SPARSH VP510”.
A few of these Feature keys are equipped with an LED to indicate the status of the feature assigned to it. You may
re-assign other features to these keys. We recommend you to assign those features that require LED indication to
the Feature keys equipped with an LED.
Not all features require LED indication. For example, the feature Call Pick-Up does not require an LED. So when
you assign this feature to a feature key, the LED of the key remains inactive, when Call Pick-Up is accessed.
Feature like Auto Redial requires an LED to show that it has been set or canceled. So, the LED of the Feature key
to which the Auto Redial feature has been assigned will glow Blue, when Auto-Redial is set, and the LED is turned
off when the feature is canceled.
Direct Station Selection (DSS) Keys
These are 16 programmable keys that can be assigned to Stations and Trunks and important or frequently
accessed features of PRASAR UCS.
For instructions on programming these keys, see “DSS Key Settings” under “Configuring Matrix SPARSH VP510”.
DSS Key LEDs
Each DSS key is equipped with an LED which glows to indicate the status of the Trunk/Extension or Feature
assigned to it.
• Status of Extensions and Trunks: The LED of DSS keys assigned to Extensions/Trunks glow in three
colors to indicate status of the call event on the Extensions/Trunks and on the Extended IP Phone.
Thus, the status of the Extended IP Phone user's own Extension as well as that of the other Extensions
and the status of Trunk lines are indicated by the LED of the DSS keys assigned to those Extensions and
Trunks on the Extended IP Phone.
The following table shows the relationship between the color of the LED and various events:
• Blue indicates the state of the extension/trunk you access. For example, when you make a call to
another Extension 203, the LED of the DSS key assigned to Extension 203 blinks Blue to indicate
ringing at the Extension. If you have successfully established speech with Extension 203 the LED
glows Blue continuously.
LED
Color
LED Mode
Continuously ON Slow Blink Fast Blink
Blue The key assigned to the
Extension you are in speech
with.
The key assigned to the
Extension you have kept on
hold.
The key assigned to the
Extension you are calling or
from which you are being
called.
Red The key assigned to the
Extension that is now busy
with another Extension/
Trunk.
The key assigned to the
Extension which has put
another Extension/Trunk on
hold.
The key assigned to the
Extension/Trunk that is called
or being called by another.
Violet You are talking on a Trunk
(external call)
You have held a Trunk
(external call)
You have an incoming call on
the Trunk (external call)
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