Method, intercommunicating gateway, access point and system for processing lan data

A method, intercommunicating gateway, access point and system for processing LAN data are provided by the embodiments of the present invention. Wherein the intercommunicating gateway comprises: a voice processing unit for performing the establishment and control of the call connection, or for performing the establishment and control of the call connection and transferring the service data to the mobile voice service between the mobile terminals in the LAN and the intercommunicating voice service between the mobile terminal and the fixed terminal in the LAN; a mobile managing unit for performing the mobility management and wireless resource management to the mobile terminals in the LAN. Application of the embodiments of the present invention could solve the problem of the long service implementing path and the complex path processing caused by that the service intercommunicating of the mobile terminal and fixed terminal in the LAN need to pass the access network and core network of the operator.