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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:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 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 |
| 4700380 |
Solid state remote actuable switch |
Oct. 13, 1987 |
| 4546214 |
Line use indicator for telephone sets sharing a single line |
Oct. 8, 1985 |
| 4371756 |
Bridge lifter module |
Feb. 1, 1983 |
| 4368358 |
Loop sharing in digital systems |
Jan. 11, 1983 |
| 4332983 |
Telephone privacy controller |
Jun. 1, 1982 |
| 4224596 |
Object locator system employing variable frequency code tone generators |
Sep. 23, 1980 |
| 4158111 |
Exclusion system for a key telephone system |
Jun. 12, 1979 |
| 4060700 |
Two-party telephone system |
Nov. 29, 1977 |
| 4017696 |
Initializing circuit |
Apr. 12, 1977 |
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