Motorola Corporation

Nuruddin Ladhani

Michael H Retzer

Earle G Long

A one-to-many dispatch method for use in a TDMA or other wireless telephone system. The one-to-many dispatch call is placed by sending a Request message from a Personal Station PS to a Control Center Station (CS) which assigns a channel with an Assignment message . The PS sends a call setup message over the control channel resulting in a channel assign message being broadcast repeatedly. Call connect messages over the Assigned Channel AC are also repeated from the CS to indicate the open connection. A hang timer is started when the PS ceases transmission of voice and the connection is torn down upon expiry of the hang timer unless another PS transmits a call setup message on the Assigned Channel AC before the expiry of the hang timer.

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Chicago, IL, United States of America

Nuruddin Ladhani