GE 29115 Series - Manual (Page 14)

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Certain other communications devices
may also use the 1.9 GHz frequency for
communication, and, if not properly set, these
devices may interfere with each other and/
or your new telephone. If you are concerned
with interference, please refer to the owner’s
manual for these devices on how to properly
set channels to avoid interference. Typical
devices that may use the 1.9 GHz frequency for
communication include wireless audio/video
senders, wireless computer networks, multi-
handset cordless telephone systems, and some
long-range cordless telephone systems.