Sony PCG-GRT270G - Manual (Page 224)

How do I avoid data transfer interruptions?
 When your computer is connected to an access point, data transfer interruptions may occur when using large files
or if the computer is in close proximity to microwaves and cordless telephones.
 Move the computer closer to the access point.
 Make sure the access point connection is intact. For more information, see Checking your network connection status
.
 Change the access point channel. See your access point instructions for more information.
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