METHOD OF REGROUPING AND RESTORING TRUNKED CALL IN A DIGITAL TRUNKED SYSTEM

摘要

A method of regrouping trunked call in a digital trunked system includes the following steps: (a1) after receiving a regroup request, trunked dispatching server allocates or locates a regroup control unit for the regroup; (b1) the regroup control unit sends regroup relation establishing command to the calls to be regrouped; (c1) the calls to be regrouped record themselves as sub-calls in the regroup call, report all received talk-right signaling to the regroup control unit, and establish speech channel with the regroup control unit; (d1) the calls to be regrouped respond to the regroup control unit that the regroup relation establishing is completed, and the regroup control unit records the speech channel with the calls to be regrouped. The method of the present invention realizes dynamic regrouping and restoring on the premise of ensuring not to interrupt calling procedure of respective trunked calls and not to effect supplement service.