Maintenance, F. adjusting tone, G. muting a call – Plantronics AP15 User Manual
Page 7: Troubleshooting

F. Adjusting Tone
During a call, press the tone control button on the front end of the AP15 to select the preferred sound.
NoTe
The tone control button has three settings.
G. Muting a Call
While wearing the headset, press the mute button. The mute indicator will be orange. To deactivate
mute, press the mute button again. The mute indicator will be off.
Troubleshooting
PROBLEM
I cannot hear callers or callers cannot hear me
Possible cause
Remedy
Compatibility switch set incorrectly
Move compatibility switch and listen for a dial tone.
Cable not plugged in correctly
Check connections to your headset and telephone.
Ensure that you can hear a dial tone.
Headset/Handset setting incorrect
Ensure that the green indicator is showing on the
headset/handset button.
Low listening volume
Increase the listening volume by pressing the + at the
top of the listening volume button.
Mute function switched on
Press the mute button to deactivate mute if the mute
indicator is orange.
PROBLEM
Caller cannot hear me clearly
Possible cause
Remedy
Your voice is unclear to callers
Adjust the speaking volume switch so you can be
heard clearly. Do not set this level too high.
PROBLEM
I have to adjust the volume on every call
Possible cause
Remedy
Adjusting volume on phone will cause
volume to change for each call
ADRO adjusts input for a consistent output. Use
the listening volume button on the AP15 to set the
desired volume level.
Maintenance
Disconnect the AP15 from telephone and power supply and clean it with a soft, damp cloth. Do not use
solvents or other cleaners. Allow AP15 to dry completely before reconnecting.
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