AT&T Synapse SB67020 User Manual page 164

Synapse SB67020/SB67025 Deskset User's Guide
A buzzing sound on my TL7600 headset.
Probable Cause
Noise interference.
Unable to deregister TL7600 headset.
Probable Cause
The Deskset is unavailable
(powered off, out of range, or
removed from the system).
You cannot identify or locate
the Deskset that the headset
is registered to.
Troubleshooting
Corrective Action
Move the headset at least 12 inches away from

the Deskset.
Other electronic products can cause interference

with your Cordless Headset. Try using your
headset as far away from these types of
electronic devices as possible: television sets,
microwaves, or other cordless telephones.
Corrective Action
Deregister the headset at the headset. Press:

VOL+ –> MUTE –> VOL– –> MUTE –> VOL+ –>
VOL– –> MUTE.
If the headset is registered to an unknown

Deskset which has AC power, you must carry the
headset out of range of the Deskset and perform
the Deregistration sequence described above.
You will know when the headset is out of range
when you press ON/OFF and you hear three
beeps and no dial tone.
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