AT&T CL81211 - Manual (Page 51)

Appendix
46
Alert tones and lights
Lights
CHARGE
On when the
handset is charging
in the telephone
base or charger.
/SPEA�ER SPEA�ER
On when the
speakerphone is on.
Lighted display
Lighted key pad
IN USE
On when the handset is in use.
On when a handset is being registered.
Flashes when there is an incoming call
or when a handset is being deregistered.
Flashes when another telephone is in
use on the same line.