878 Matrix ETERNITY NE System Manual
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 SARVAM UCS.
For instructions on programming these keys, see “Phone 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
(i.e. Extended IP Phones, SLTs) 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.
• Red indicates the state of other Extensions/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.
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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