AT&T CL81219 - Manual (Page 54)

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Appendix E
Troubleshooting
I subscribe to a
non-traditional
telephone
service that uses
my computer
to establish
connections, and
my telephone
doesn’t work. Make sure your computer is powered on.
Make sure your Internet connection is working properly.
Make sure that the software is installed and running for
your non-traditional telephone service.
Make sure to plug your USB telephone adapter into
a dedicated USB port on your computer. Do not plug
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
non-traditional telephone service provider. Contact your
service provider for more information.
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