Broadband filter

• In telephony, where the same telephone connection is being used to carry telephone conversations and broadband internet access, a broadband filter is a device interposed in a joint in a telephone connection to stop internet traffic signals from reaching the telephone and thus causing loud interference noises spoiling the telephone conversation.

See also

• DSL filter

Distinguish from

• UV broadband filter, a chemical used to filter ultraviolet light; see Category:Sunscreening agents
• Broadband Filter Imager (BFI), part of the Hinode astronomical research satellite