Method and system for interrupting a dispatch call

摘要

The invention concerns a method ( 300 ) and system ( 100 ) for interrupting a dispatch call. The method can be practiced in a dispatch communications system ( 100 ) having at least a first communications channel ( 162 ) for carrying voice traffic and a second communications channel ( 164 ) for carrying communications-enabling information. The method includes the steps of assigning ( 312 ) the first communications channel to at least a first caller ( 133 ) and a second caller ( 135 ) to permit the first and second callers to engage in a dispatch call and as the first caller has control over the first communications channel, transmitting ( 314 ) an interrupt message ( 505 ) over the second communications channel to inform the first caller of an interrupt status of the second caller. The transmitting step is performed without terminating the dispatch call.