AT&T SB67030 User Manual page 297

Symptom
Unable to deregister TL7600
Headset.
Troubleshooting
Synapse SB67030 and Accessories User's Guide
Probable Cause
The SB67030 Deskset is
unavailable (powered off, out
of range, or removed from
the system).
You cannot identify or locate
the SB67030 Deskset the
Headset is registered to.
Corrective Action
Deregister the Headset at the Headset. Press: VOL+ –>

MUTE –> VOL– –> MUTE –> VOL+ –> VOL– –> MUTE.
If the Headset is registered to an unknown SB67030

Deskset which has AC power, you must carry the Headset
out of range of the SB67030 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.
297
Cordless Headset