AT&T EL51200 User Manual page 56

Appendix
Troubleshooting
• Make sure to plug your USB telephone adapter into a dedicated USB port
on your computer. Do not plug it into a multiple port USB hub (USB splitter)
that is not powered.
• In a few rare instances, the USB port on your computer may not have
enough power. In these instances, try using a USB hub with its own external
power supply.
• If you are using a firewall, it may prevent access to your nontraditional
telephone service. Contact your service provider for more information.
Common cure for electronic equipment:
If the telephone is not responding normally, try resetting it. Do the following in
the order listed:
1. Disconnect the power to the telephone base.
2. Disconnect the cordless handset battery.
3. Wait a few minutes.
4. Connect power to the telephone base.
5. Completely remove then replace the battery. Place the cordless handset into
the telephone base.
6. Wait for the cordless handset to reestablish its connection with the
telephone base. Allow up to one minute for this to take place.
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