1
J Michael Jarvis: Distribution frame board. Joseph G Seeber, May 9, 1989: US04829564 (33 worldwide citation)

A main distribution frame (MDF) board for connecting a plurality of stations to a system or switch, or an intermediate distribution frame (IDF) board for connecting an input cable to an output cable, comprises: sets of barrel connectors to which the stations are wired (in the MDF embodiment) or an i ...


2
J Michael Jarvis, Andrew F Bass, James B Sherman: Station line switching control system. Charter Leasing Corporation, Lowe Price LeBlanc and Becker, June 25, 1991: US05027341 (10 worldwide citation)

A station controller for use in a telephone system includes a plurality of digital telephone stations comprising one or more multi-station pick up groups, each having a primary station and one or more associated secondary stations for picking up calls to the primary station. The secondary stations g ...


3
J Michael Jarvis, Andrew F Bass, Gregory R S Ilg: Digital telephone station line controller. Charter Leasing Corporation, Staas & Halsey, May 2, 1995: US05412709 (6 worldwide citation)

A digital station line controller is connected via a digital link, such as a T1 span, to the line side of a central office and via digital station line loops to digital terminal devices, such as telephones. The station line controller interprets certain signals used by a conventional protocol, such ...