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Secure interlink receiver for remote programming of wireless telephones
| Details |
Inventors: Watler, Theodore W.; McGregor, Travis Melchin; McGregor, Donald Scott; McGregor, Christopher M.;
Assignee: Telemac Corporation (Los Angeles, CA)
Primary Examiner: Beamer; Temica M.
Assistant Examiner:
Attorney, Agent or Firm: Townsend and Townsend and Crew LLP, Chambers; Guy W.
An interlink receiver system and receiver unit for remote encoding wireless phone units including a host computer that communicates with the interlink receiver unit over telephone lines or airways to encode wireless phone units with the key code for authentication of the phone unit and encryption of communications from the phone unit during use, the interlink receiver unit connecting to the host computer for data exchange and controlling the encoding of a connected phone unit. |
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DETAILED DESCRIPTION This invention relates to a device and process for secure remote programming of wireless phones.
Programming of phones from a remote host computer may be required for a number of reasons.
In U.
S.
Pat.
No.
5,325,418, a system for remotely programming wireless phones was described for the primary purpose of central accounting.
Programming of cellular telephones in the rental environment includes initial programming and activation of new phones added to the rental inventory, and the reprogramming of rental phones that are returned to different rented sites and added to the return site inventory.
In other situations, programming of wireless phones from a remote host is desired to coordinate the allocation of assignable phone numbers.
For example, the service provider may have a block of MIN's (mobile identification numbers) that must be assigned to new phones before they can be activated.
If there is a number of distribution outlets, centralizing this resource allows assignment to be made in accordance with inventory movement at each site.
As programming and activation of the mobile phone moves away from the control of the manufacturer, carrier or service provider, security becomes more difficult to implement.
It has been suggested that remote programming can be performed with a conventional personal computer and a modem with the wireless phone directly connected to the serial port of the computer via a cable.
Because a personal computer is effectively an open system, security is virtually impossible to implement, where security is to extend to the programmer.
However, where there is interposed an interlink receiver between the host computer and the telephone unit as disclosed in the referenced patent, hardware and software can be implemented that effectively codes certain features of the programming sequence that is even secure from the technician programming the phone.
The interlink receiver of this invention is designed to include a secure encoding and encryption chip that permits certain security codes to be entered into a mobile phone without access by the programmer and without certain keys entering the communication dialogue between the host computer and the interlink receiver
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