A ROAMING INTERWORKING GATEWAY FOR MOBILE TELECOMMUNICATIONS SYSTEMS

摘要

A roaming interworking gateway (RIG, 20) has a modular unit (30) associated with an IS.41 system, a modular unit (31) associated with a GSM system, and a translation function (32). The translation function (32) accesses a database which stores subscriber data upon registration of a subscriber in a roamed mobile system. Each modular unit (30, 31) comprises an authentication centre to perform authentication before registration. The RIG (20) is implemented on a distributed hardware structure having a high-speed network (51) to which are connected network access processors (NAP, 64), database servers (62), and an operations and maintenance processor (63). Each modular unit resides on a single network access processor. The translation function has a module residing on the NAP of each associated modular unit.