| 摘要 |
PROBLEM TO BE SOLVED: To flexibly update the program of a communication equipment. SOLUTION: The firmware program of an incorporated communication system 1 is stored in a flash memory 3. At the time of updating the firmware pogrom, down loading data 11 is transferred from a common storage device through a data bus 8, a common line controller 7, a commination line 6, a network 5 and a communication line 4 as down loading data 11, Program data 12 for updating the firmware program and an update processing program 13 for rewriting the firmware program agasint the flash memory 3 are contained in the down loading data 11. Since the update processing program 13 is contained in down loading data 11, flexible correspondence can be executed even if the transfer data system of program data 12 is changed or the type of the flash memory 3 is changed.
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