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
Expression of dirigent gene EG261 and its orthologs and paralogs enhances pathogen resistance in plants
Method for correcting integrating cavity effect for calibration and/or characterization targets
Systems and methods for generating a user profile based customized media guide with user-generated content and non-user-generated content
Managing a spinlock indicative of exclusive access to a system resource
Method for producing semiconductor substrate, semiconductor substrate, method for manufacturing electronic device, and reaction apparatus
System and method for efficient association of a power outlet and device
  Randomly Featured Patents
Surface charge launching apparatus
Methods for enhancing the efficiency of rhenium-promoted epoxidation catalysts and epoxidation methods utilizing these
Wraparound carton with upwardly extending side walls
Connector with resilient intershell connection
Low migration polyolefin composition comprising vitamin E-type stabiliser
Copolymers of dimers of cyclic conjugated dienes and maleic anhydride
Automatic identification of sound recordings
Bradykinin antagonists
Tensioning hinge