Method and system for GSM billing during WLAN roaming

摘要

A method and system for recording and billing services during the roaming of a mobile IP node in heterogeneous WLANs. First call detail records are transmitted from an access server to a billing module and second call details are transmitted from the access server to a proxy module. The service requested from a provider of a fixed network is billed by means of a clearing module and/or the TAP files are transmitted to a GSM service provider for billing.