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Appendix
“Beep”
(Single beep)
Handset registration or programming
command successfully completed.
“Beeeeeeeeep”
(1 long beep)
The handset is out of range. Move closer
to the base.
“Beeeeeeeeep”
(1 long beep)
Error tone (current operation has been
unsuccessful; try again).
Alert tones and indicator lights
“Beep-Beep-Beep-Beep-Beep”
(5 quick beeps)
Handset battery is low. Place handset in
base to charge the battery.
Alert tones
Indicator lights
MUTE
On when base
microphone is muted.
SPEAKER
On when speakerphone
is in use.
NEW MESSAGES
Flashes when new
messages are waiting.
IN USE
On when the phone is off hook.
Flashes when a parallel set is in use.
Flashes following ringing cadence
during ringing.
SPARE BATTERY
On when spare batteries in the
base are in charging mode.
Flashes when alkaline batteries
are detected.
CHARGING
On when the handset
batteries are charging
in the base cradle.
91-000020-021-000-E2520 Manual-ENG.qxd 2/13/1950 7:21 PM Page 26