Abstract: A wall phone filter housing unit adapted for interfacing between incoming telephone lines connected to a wall mounting plate and subscriber's network termination equipment is provided. The housing unit includes a base member, a cover member adapted for co-mating with the base member, and a PCB assembly having an impedance blocking filter mounted thereon disposed between the base member and the cover member. The housing unit further includes a first modular plug for connection to incoming telephone lines, a first filtered modular jack for connection to a telephone set, a second filtered modular jack for connection to an answering machine or Fax machine, and a third unfiltered modular jack for connection to DSL or HPN equipment devices.