a wired exchange connected to a public switched telephone network (PSTN), for providing a wired phone service;

a mobile gateway connected to the wired exchange for assigning virtual wired phone numbers to a plurality of mobile communication terminals, for providing a public wired phone service to the mobile communication terminals by linking the virtual wired phone numbers with mobile identifier numbers (MINs) of the mobile communication terminals, and for distributing a call to a wired terminal and then to a wireless terminal when it is determined that a phone number received from the wired exchange is a simultaneously called phone number; and

a private base station controller (pBSC) connected to the mobile gateway and a public land mobile network (PLMN) for providing a mobile communication service to the mobile communication terminals through a private base station transceiver system (pBTS);

wherein the pBSC comprises a database for storing the virtual wired phone number assigned to each of the mobile communication terminals and the MIN of the mobile communication terminal corresponding to the virtual wired phone number.