818 Matrix PRASAR UCS System Manual
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 phone.
Thus, the status of user's own Extension, status of other Extensions and status of the trunk lines are indicated by
the LED of the DSS keys assigned to those Extensions and Trunks on the 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.
• Red indicates the state of other Extension/Trunks. For example, if the LED of the DSS key assigned to
Extension 201 is glowing Red continuously, it means Extension 201 is busy with another Extension or
Trunk.
• Violet indicates the state of the trunk you are in speech with. For example, when you are in speech on an
outgoing call on Trunk 1, the LED of the DSS Key assigned to Trunk 1 will be continuously ON. When you
put the call on hold, the LED will blink slowly.
Status of Features
The LED of a DSS key is activated when the feature assigned to this key is used.
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 DSS 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 DSS key to
which the Auto Redial feature has been assigned will glow Red, when Auto-Redial is set, and the LED is turned off
when the feature is canceled.
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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