US Patent No: 4,625,077

Number of patents in Portfolio can not be more than 2000

Telephone bridge method and apparatus

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Importance

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Abstract

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An improved telephone bridge apparatus of the type in which a plurality of remote stations communicate with a local station over a plurality of phone lines, wherein each of the plurality of phone lines is assigned to a different one of the plurality of remote stations. Each phone line is connected to an input channel, and each input channel is summed at a summing point, and the collective signal is supplied to a modem. Each phone line is connected to an output channel, each output channel receiving the same broadcast message from the modem. The modem, in turn, is connected to a controller, which communicates with the local station and which polls the remote stations according to a predetermined priority. The improvement includes monitoring means for measuring the signal levels being transmitted along each input channel, and signal level modifying means positioned in the signal paths of each input channel for modifying the level of the signal being transmitted thereto.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
ANASAZI, INC.PHOENIX, AZ2
INTERNATIONAL ANASAZI, INC.PHOENIX, AZ4

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Biffle, Lewis L Phoenix, AZ 1 5
Larson, Chad R Scottsdale, AZ 2 8

Cited Art Landscape

Patent Info (Count) # Cites Year
 
C-Cor Labs, Inc. (1)
4,512,033 Remote level adjustment system for use in a multi-terminal communications system 133 1982

Patent Citation Ranking

Forward Cite Landscape

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AVAYA INC. (1)
6,314,162 Digital telephone link margin verification 1 1999
 
JOSEPH WEINBERGER (1)
7,417,753 System for automatically monitoring copiers from a remote location 0 2001
 
PANDUIT CORP. (1)
7,869,179 Protection patch panel 1 2008
 
QWEST COMMUNICATIONS INTERNATIONAL INC. (1)
6,532,277 Method for controlling DSL transmission power 42 1999
 
SAMSUNG ELECTRONICS CO., LTD. (1)
6,061,427 Transmission power control method in asymmetric digital subscriber line system 46 1998