ROAMING PROCESS AND PERTAINING DEVICES

摘要

Telecommunications process enabling a subscriber in a Home Public Land Mobile Network (HPLMN) to connect to a Visitor Public Land Mobile Network (VPLMN) without a roaming agreement with the HPLMN. Connection is achieved by means (IMSI-PPLMN, 3,5) which are made available by a partner unit (PPLMN) having a roaming agreement with both the HPLMN and the VPLMN. In a first embodiment of the invention, connection is established by replacing the international mobile subscriber identification (IMSI) for a HPLMN with an identification for a partner network on the subscriber identification module (SIM) card.