Förbättringar av, eller med avseende på, kommunikationssystem

摘要

A communication system for the transmission of a call from a first mobile communication network to a second mobile communication network including mobile customers with mobile stations (MS). Said system including means adapted to transmit calls, between these both mobile communication network while a conversation is in progress and that said network are operated by different telecommunication operators with its own Public Land Mobile Network (PLMN) and that said transmission is adapted to not losing ongoing calls when a customer with a MS passes into another operators Public Land Mobile Network (PLMN).