VTech i6790 - Manual (Page 9)

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If you subscribe to DSL service
If you receive high speed internet through your telephone line (commonly referred to as DSL), and
you are experiencing interference during telephone conversations and/or your caller ID features are
not functioning properly, install a DSL filter to the telephone line between the telephone base and
the telephone wall jack. To obtain a DSL filter and more information about DSL interference, contact
your DSL service provider.
Installation
• Most DSL
providers
recommend
installing a DSL
filter in every
telephone jack.
Your DSL service
provider may
provide more
information
regarding
telephone
interference.
DSL filter (for
DSL users)
To single telephone jack (RJ11C) Telephone line cord