Trunking communication system

The utility model discloses a trunking communication system comprising multiple base stations and terminals which are connected with the base stations. Each base station is internally provided with a transmission module which comprises a protocol converter and a router. The base station is connected with the protocol converter via an E1 link. The protocol converter is connected with the router via an ethernet. The multiple base stations mutually communicate and are connected via the routers arranged in the transmission modules by adopting an internet. A defect that the base stations cannot mutually communicate if the E1 link is abnormal in the existing trunking communication systems can be overcome by the system.