AT&T TL7700 - Manual (Page 7)

3
Getting started
One short beep Headset key tone. •
One short beep
every 30 seconds Muted headset microphone alert tone. •
Two beeps Error alert tone.
The ringer volume is at its lowest setting.
The listening volume is at its highest or
lowest setting.
Any key is pressed while the headset is
out of range •
•
•
•
Two low beeps Call waiting alert tone. •
Two rapid beeps
every 20 seconds Low battery warning. •
Three rising beeps A conference call starts. •
Three rapid beeps
every 20 seconds The headset is out of range.
The headset is not yet registered. •
•
Ring tone Incoming call alert tone.
Ring back tone. •
•
Three rapid beeps The headset is powering on or off. •
Quick reference guide - headset
Headset alert tones