Telematrix Spectrum Plus SP550, User Manual

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Speaker Line Indicators
When the “SPEAKER” key is acti-
vated, the in-use light illuminates
steadily RED above the “SPEAKER”
key. The LCD will display “SPEAKER”
when active.
Headset Key Indicators
When the “HEADSET ON/OFF” key
is activated, the Headset indicator will
be steadily RED. The LCD will display
“HEADSET” when active.
Hold Key Indicators
When the “HOLD” key is activated,
the light above the HOLD KEY will be
steadily RED. The LCD will display
“HOLD” when active,
Volume
Contrast
Volume
Contrast
Volume
Contrast
In-Use Indicators
In-use indicator lights located above each key indicate in-use operations.