Resources Contact Us Home
Wireless prepaid telephone system with extended capability

Image Number 8 for United States Patent #6754481.

A telecommunication system incorporates individual station instruments simplified by wireless operation, voice dialing, prepaid accounting and out-call operation, all enabled by cooperative system operation including supporting central equipment. Wireless operation of the central equipment involves a multiple port wireless platform along with other units for interfacing a multitude of mobile station instruments simultaneously for interactive audio communication to, regulate control, monitor and record operations of the instruments, and bridge communication with selected remote terminals through the public switched telephone network. Message capability, emergency abort to an operator station and security features supplement the basic system.

  Recently Added Patents
Molten alloy solidification analyzing method and solidification analyzing program for performing the same
Testing SQL query writing skills
Methods circuits apparatuses and systems for facilitating access to online content
Communication terminal device, communication system, and communication control method
Nucleic acid-based tests for prenatal gender determination
Techniques for accessing a parallel database system via external programs using vertical and/or horizontal partitioning
  Randomly Featured Patents
Lock assembly
Fiber optic light bar for edge lighted signage
Feeding bottle
Branched polyanhydrides
Compressed-air disk brake
Printhead micro-electromechanical nozzle arrangement with motion-transmitting structure
Organo-tin compounds
Plant extraction using nonlinear vibration
Optical depolarizers and DGD generators based on optical delay
Aquarium filtration system