| 摘要 |
A wireless communication unit is capable of monitoring a plurality of calls over a network, and comprises signal processing logic arranged to prioritise at least one call to be monitored and to provide at least one call priority of the at least one call to be monitored to a network element. A Terrestrial Trunked Radio (TETRA) system is known to be able to monitor multiple calls at the same time. It is known for congestion to arise and a choice of call/transmission to be dropped being made based on a length of time since a call/transmission was last established. The dropping of a call can be disruptive to the parties involved and as TETRA is used widely within private mobile radio environments by emergency services and the like, the invention aims to enable the monitoring of a plurality of calls and the management of them in accordance with call priorities. |
