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Appendix
One long beep The headset is ready to take your voice command. (You have to 
install the AT&T Sophone Call Manager before using this feature. 
For installation and operation instructions of the soware, refer to 
the Installation and Operation Guide which can be found in the 
CD-ROM in the package. You may also visit  
www.telephones.att.com/downloads to download it.)
One short beep every 
30 seconds
The microphone is muted. 
Two beeps  X Error alert tone.
 X The ringer volume has reached its lowest setting.
 X The listening volume has reached its highest or lowest setting.
 X The speaking volume has reached its highest or lowest setting.
 X 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 has started.
Three rapid beeps 
every 20 seconds
 X The headset is out of range.
 X The headset is not yet registered.
Three rapid beeps The headset is powering on or o.
Headset alert tones
Screen icons, alert tones, and lights