AT&T SB67020 User Manual page 137

Synapse SB67020/SB67025 Deskset User's Guide
The TL7600 headset registration is not working.
Probable Cause
The headset and the Deskset
are not communicating with
each other.
Poor audio quality. Speech is cutting out.
Probable Cause
The headset is almost out of
range or is experiencing
interference.
HEADSET key on Deskset does not work.
Probable Cause
Headset is in the charger or
powered down.
MUTE key on the Deskset does not mute the headset.
Probable Cause
MUTE keys on Deskset and
headset operate separately.
Troubleshooting
Corrective Action
Confirm that you have placed the headset in the

charger before you press
Deskset.
If registration does not start, try lifting the

headset out of the charger for a few seconds
before placing it back.
Corrective Action
You may be close to being out of range. Try

moving closer to the Deskset.
Other electronic products can cause interference

with your headset. Try installing the Deskset far
away from devices such as televisions,
microwaves, or other cordless devices.
If the problem persists, check audio quality on the

Deskset and/or contact your system
administrator.
Corrective Action
Confirm that the headset is out of its charger

before you press HEADSET.
Confirm that the headset has sufficient power. If

the headset does not respond and the blue light
does not blink, the battery may have no charge.
Place the headset in the charger for at least six
hours.
Corrective Action
None. Only the MUTE key on the headset mutes

calls. The MUTE key on the Deskset does not
work with the headset.
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