A method of operation in a message trunked mode of a trunked communication system (100) comprising a plurality of user terminals (MS 3, MS 5, MS 7) and a controller (17), including the following steps carried out by the controller: SL LI(i) allocating a communication channel when a first one (MS 3) of the user terminals has requested initiation of a call; LI(ii) applying a hang time upon detection that a participant in a call has finished communicating (e.g. speaking) and keeping the channel allocated to the call during the hang time; LI(iii) determining if one of the user terminals participating in the call requests during the hang time to continue (e.g. to continue a conversation in) the call; and LI(iv) clearing the communication channel if no call continuation request from one of the participating user terminals has been detected and/or granted when the hang time has expired; wherein the controller (17) is operable to apply variable hang times during operation of the system. /SL Also described are a system and controller for operation of the method.
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