Telephone Base Indicator Lights; Handset Alert Tones - AT&T EL51100 User Manual

Appendix
Screen icons, indicator lights and alert tones

Telephone base indicator lights

Handset alert tones

One short beep
(Key tone)
Two short beeps
(Error tone)
Three short beeps
(Out-of-range or no-power-at-
base warning tone)
Three short high-pitched beeps
(Confirmation tone)
Four short beeps
(Low-battery warning tone)
IN USE light
On when the handset is in use.
Flashes when another telephone on the same line is in use.
Flashes quickly when there is an incoming call.
A key is pressed.
Command has failed.
You have reached the beginning or end of the list.
You have reached the minimum or maximum listening volume.
The handset is out of range or there is no power at the
telephone base.
The telephone has completed the command successfully.
Low battery warning.
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