QUEUE CONTROL METHOD FOR CENTER IN STAR-SHAPED SYSTEM

摘要

PURPOSE:To omit the time needed for retransmission by setting a retransmission command to the final row of a queue against a terminal to be called when a recoverable denial answer is received from the terminal to be called against the command inssued to the terminal to be called from a calling terminal. CONSTITUTION:Plural terminal units i/o31-56 are connected around a center 50 in the form of a star. When a command is issued from the unit i/o51 to another unit i/o52, for example, the center 50 decides whether the relevant denial state can be recovered or not in case a denial answer is received form the unit i/o52. If the recovery of the denial answer is impossible, this information is supplied to the unit i/o51. While the center 50 sets a retransmission command to the final row of the queue against the i/o52 with a recovery enable denial answer. Thus it is possible to omit the procedure for retransmission command and to reduce the load at the calling side.