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Class Information
Number: 379/177
Name: Telephonic communications > Polystation line system (i.e., party line)
Description: Subject matter wherein the terminals of plural subscribers having different call addresses are connected to the central switching office by a single line.

Sub-classes under this class:

Class Number Class Name Patents
379/182 Automatic or unattended 20
379/179 Call alerting (e.g., ringing) 51
379/186 Central power source 5
379/187 Connected to central office 13
379/185 Portable or mobile 26
379/178 Revertive call 4

Patents under this class:
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Patent Number Title Of Patent Date Issued
8693652 Method and system for processing calls in an architecture allowing a telephony identifier to be associated with a group of identities Apr. 8, 2014
8498393 Method for provisioning a terminal device in a multi-user setting Jul. 30, 2013
8428238 System and method for ensuring call privacy in a shared telephone environment Apr. 23, 2013
8364154 Employing multiple mobile devices with varying functional capabilities Jan. 29, 2013
8320894 Employing multiple mobile devices with varying functional capabilities Nov. 27, 2012
8259917 System and method for generating one-way speech signal samples Sep. 4, 2012
8255206 Voice mixing method and multipoint conference server and program using the same method Aug. 28, 2012
8243895 Communication system with configurable shared line privacy feature Aug. 14, 2012
8078188 User selectable audio mixing Dec. 13, 2011
7630726 Communication method operated by software and apparatus thereof Dec. 8, 2009
7529540 Method and system for invoking push-to-service offerings May. 5, 2009
7301940 Dual-use packet/analog phone or phone-adapter in a packet telephony distribution system Nov. 27, 2007
6928294 Method and apparatus for enabling group communication services in an existing communication system Aug. 9, 2005
6850608 Process for assigning a called number to customer premises equipment Feb. 1, 2005
6829341 Method for managing a plurality of extension communication units Dec. 7, 2004
6697358 Emulation of phone extensions in a packet telephony distribution system Feb. 24, 2004
6661893 Telephone loop monitoring and isolation system Dec. 9, 2003
6636586 Telephone set device capable of vocalizing a telephone number being called Oct. 21, 2003
6411694 Arrangement for improving a telephone system Jun. 25, 2002
6393275 Cellular extension service using single line and multiple cellular telephone sets May. 21, 2002
6295348 Method of arbitrating type II/type III CPE's during SCWID Sep. 25, 2001
6263063 System and method for provisioning an extra line on demand and for selectively connecting calls with a plurality of devices Jul. 17, 2001
6226371 Communication system with assembly carrier unit May. 1, 2001
6219411 Personal computer assisted multiple line access Apr. 17, 2001
6178230 System and method for identifying a callee of an incoming telephone call Jan. 23, 2001
6145019 Unconfigured device that automatically configures itself as the primary device if no other unconfigured device is present Nov. 7, 2000
6038300 Switching apparatus for use in telephone house wiring Mar. 14, 2000
6038297 System for party line suppressed ringing access of subscriber lines Mar. 14, 2000
5923743 Single-wire data distribution system and method Jul. 13, 1999
5920615 Telecommunications switch Jul. 6, 1999
5881143 Telephone line device Mar. 9, 1999
5872839 Office line selecting technique of a telephone switching system Feb. 16, 1999
5838778 Reserved speech path forming method in a parallel-connected telephone system Nov. 17, 1998
5838777 Apparatus for auto-detecting dialing of a parallel communication device Nov. 17, 1998
5822417 Phone control center for a life safety network Oct. 13, 1998
5761287 Digital key telephone connecting apparatus and method in a digital key telephone system Jun. 2, 1998
5745557 CIDCW primary/secondary arbitration Apr. 28, 1998
5699419 Analog multibutton telephone keysets Dec. 16, 1997
5684869 Telephone station remote access device and method Nov. 4, 1997
5606593 Apparatus and method for automatically returning a telephone set to an on-hook condition Feb. 25, 1997
5596631 Station controller for distributed single line PABX Jan. 21, 1997
5592540 Method and apparatus for selectively delivering telephony signals on a hybrid coaxial cable network Jan. 7, 1997
5566233 Communication controlling apparatus for a single-line telephone with extensions thereto Oct. 15, 1996
5544235 Identification of called directory number at multiple directory number per line premises prior to ringing signal reception Aug. 6, 1996
5454032 Method of establishing communication link to one of multiple devices associated with single telephone number Sep. 26, 1995
5425089 Low cost telephone caller identification device and method Jun. 13, 1995
5208851 Method for controlling allocation of a communication link May. 4, 1993
4899378 Telephone announcement system Feb. 6, 1990
4847888 Field telephone system Jul. 11, 1989
4723271 Apparatus for selectively alerting party line subscribers Feb. 2, 1988

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