ATT Dect 6.0 User Manual

54

Appendix

I cannot hear a ring tone from the headset when there is an 
incoming call.
•   The headset does not have an external ringer. You can only 
hear the ring tone when you are wearing the earpiece.
If you have pressed MUTE/VOICE on the headset when it is 
ringing, it mutes the ring tone of the headset. The ring tone 
resumes on the next call.
•   You may have too many extension phones on your telephone 
line to allow all of them to ring simultaneously. Try unplugging 
some of the other...

55

Appendix

Troubleshooting
I hear other calls while using my headset.
• Plug a different telephone into the telephone jack that you 
are currently using. If you still hear other calls, the problem 
is probably in your building's wiring or local service. Call your 
telephone service provider.
I cannot hear any audio using my headset in PC mode.
•  Make sure the two ends of the USB cable are securely plugged 
into the computer and headset base USB ports.
•  Make sure PC mode is selected and the PC...

56

Appendix

Troubleshooting
I want to use my headset with a different headset base.
• You need to deregister the headset from the current headset 
base (page 49), and then register it to the new headset base 
(page 46).
I cannot answer an incoming call in PC mode.
•  Your headset cannot directly answer a call to your computer. 
You must answer all incoming calls on your computer through 
your VoIP program. 
•  Make sure PC mode is selected on the headset base and the 
PC light is on.
•  Make sure you...

57

Appendix

Troubleshooting
The  light on the headset is off while charging.
• Make sure the power and line cords are plugged in correctly 
and securely.
Make sure that the battery is securely installed in the  
cordless headset.
Make sure the headset is sitting properly in the base to charge.
• Unplug the unit’s electrical power. Wait for 15 seconds, 
then plug it back in. Allow up to one minute for the cordless 
headset and headset base to reset.
Clean the cordless headset and headset base charging...

58

Appendix

Troubleshooting
When I press  on the headset, the handset lifter rises, but 
the call is not connected or I do not hear a dial tone. 
•  Try all the suggestions mentioned above.
•  When using the handset lifter, make sure the CORDED 
HANDSET CONNECTED switch on the headset base is set to 
YES and the telephone line cord is connected to the telephone 
line jack on the back of the corded phone. 
•  The handset lifter may not rise high enough to release the 
switch hook. Try to adjust the...

59

Appendix

My corded phone is ringing, but my headset is not ringing.
•  Make sure the CORDED HANDSET CONNECTED switch on the 
headset base is set to YES.
•  Make sure that the RING ON/OFF button on the lifter is turned 
on. If the RING ON/OFF button is turned off, the headset does 
not ring.
•  If the speaker of your corded phone is not located under the lifter, 
install the auxiliary ring detector. See page 27 for instructions.
•  It may be necessary to adjust the sensitivity of the ring 
detector....

60

Appendix

Troubleshooting
Nothing happens when I move the corded handset audio 
adjust switch. 
•  When the handset lifter is used, make sure the CORDED 
HANDSET CONNECTED switch on the headset base is set 
to YES. Slide the corded handset audio adjust switch at the 
bottom of the headset base from A to F until you obtain good 
sound quality.
My headset is ringing even when there is no incoming call.
The sensitivity level of your ring detector may be too high. See 
page 28 to adjust the sensitivity...

61

Appendix

Maintenance
Taking care of your headset
Your cordless headset contains sophisticated electronic parts, so it must be 
treated with care.
Avoid rough treatment.
Place the headset down gently. Save the original packing materials to protect 
your headset if you ever need to ship it.
Avoid water
Your headset can be damaged if it gets wet. Do not use the headset outdoors 
in the rain, or handle it with wet hands. Do not install the headset base near a 
sink, bathtub or shower.
Electrical...

62

Appendix

Important safety information
This symbol is to alert you to important operating or servicing instructions that may appear in this user’s manual. Always follow basic safety precautions when using this product to reduce the risk of injury, fire, or electric shock.
Safety information
Read and understand all instructions in the user’s manual. Observe all markings on the product.
Avoid using a headset during a thunderstorm. There may be a slight chance of electric shock from lightning.
Do not...

63

Appendix

Important safety information
CAUTIONS:
Use only the power adapter provided with this product. To obtain a replacement, visit our website at  
www.telephones.att.com or call 1 (800) 222-3111. In 
Canada, dial 1 (866) 288-4268.
Use only the supplied rechargeable battery or replacement battery (model 
BT191665). To order, visit our website at  
www.telephones.att.com or call  
1 (800) 222-3111. In Canada, dial 1 (866) 288-4268.
To prevent risk of fire or battery explosion, replace with the...