Program update in duplicated switching systems

Details Program update in duplicated switching systems Program update in duplicated switching systems

H - Electricity

04

M

354/225.1

H04M 3/24 (2006.01) G06F 11/16 (2006.01) H04Q 11/04 (2006.01)

Patent

CA 1268551

PROGRAM UPDATE IN DUPLICATED SWITCHING SYSTEMS Abstract A time-division switching system including first and second control units operating in accordance with a generic program is disclosed. After a new generic program is stored in the second control unit, the first control unit still operating in response to the old generic program initiates the performance of a test sequence by the second control unit. The first control unit times the execution of the test sequence. When the test sequence is not completed within a predetermined period of time or when test results generated by the test sequence do not match expected test results, a failure message is generated. Alternatively, when the test sequence is completed within the predetermined period of time and test results match the expected test results, a success message is generated.

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