AT&T Syn248 SB35020 User Manual page 116

Syn248 SB35020/SB35025 Deskset User's Guide
No dial tone.
Probable Cause
Headset cannot
communicate with Deskset.
Batteries do not hold a charge.
Probable Cause
Bad battery or bad battery
connection.
Troubleshooting
Corrective Action
Verify that the Deskset can make external calls.

For more information, see
page 108
You may be out of range of the Deskset; move

closer.
At the Deskset, confirm that your headset is

registered to the Deskset. See
Optional Cordless Headset (SB35025 Only)" on
page 86.
Corrective Action
Make sure that the headset battery is installed

correctly.
Charge the battery, following the instructions in

the headset user's manual. For optimum daily
performance, return the cordless headset to the
charger when not in use.
You may need a new battery.

Your headset might be malfunctioning. Contact

the headset manufacturer.
116
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"Outgoing Calls" on
"Registering an