AT&T TL7612 User Manual page 53

Dect 6.0 cordless headset and handset lifter
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Appendix
Troubleshooting
I cannot get a dial tone.
First, try all the suggestions above.
Move the cordless headset closer to the headset base. You
might have moved out of range.
If you are using LIFTER MODE, you might need to slide the
LIFTER AUDIO ADJUST switch (page 18).
If the previous suggestions do not work, disconnect the
headset base from the telephone jack and connect a different
phone. If there is no dial tone on that phone either, the
problem is in your wiring or telephone service. Contact your
telephone service provider.
Your telephone line cord might be defective. Try installing a
new telephone line cord.
Nothing happens when I slide LIFTER AUDIO ADJUST to get a
clear dial tone.
There is no need to change the LIFTER AUDIO ADJUST switch
when you use NO LIFTER MODE. If you cannot get a dial tone,
try all the suggestions above.
I am getting a buzzing sound on my headset or corded base
speakerphone.
Your telephone may experience interference from the headset.
To overcome this problem, move the headset base at least 12
inches away from the telephone.
Other electronic products such as HAM radios and other DECT
phones can cause interference with your cordless headset.
Try installing your headset as far away as possible from these
types of electronic devices.
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