Trunked network interconnecting method and system

The invention relates to a method for interconnecting cluster networking, which includes the following steps: A. a cluster subnet consists of a cluster wireless node, a dispatch unit, a cluster location register and cluster interconnection nodes; B. a plurality of cluster subnets are interconnected through the cluster interconnection nodes. In addition, the invention also provides a system for interconnecting the cluster networking, which comprises a plurality of cluster subnets which are interconnected. The cluster subnet comprises a cluster wireless node, a dispatch unit, a cluster locationregister and cluster interconnection nodes; the plurality of cluster subnets are interconnected through the cluster interconnection nodes. The invention can meet the requirements on interconnection between the cluster subnets in a totally distributed cluster network, simplify network interface mode and accelerate establishing speed of a call.