![TC Communications TC1920 User Manual Download Page 77](http://html1.mh-extra.com/html/tc-communications/tc1920/tc1920_user-manual_3820880077.webp)
Chapter 5 Troubleshooting
Electrical
TC1920 Rev 1.3 User Manual
5-8
5.4.1.8
Compression Ratio (CP-R)
These LEDs indicate the compression rate enabled on
the unit, as well as the rate used during a call in
progress. Auto-negotiation of the compression rate is
indicated by all LEDs solid.
CP-R LED Behaviors
5.4.1.9
Volume TX and RX
The
TX
LED displays the detected volume of the signal
coming out of port from the remote side.
The
RX
LED displays the detected volume of signal
going into port from at the local side.
5.4.1.10
FXS
The LED indicates the unit has an FXS port.
FXS LED Behaviors
64K/32K/16K/8K LED
Condition
Idle
Solid
Compression rate is enabled and available for use during a
call.
Off
Compression rate is disabled
Call in Progress
Flash
The compression rate used during a call
Off
Compression rate is not in use.
FXS LED
Condition
Solid
Unit has FXS port and is ready to use.
Flash
Unit is re-configuring. Calls cannot be made during this time.
Off
Unit does not have FXS port.