Mobile communications network

The protocol for automatically according to one of ). e.g) AND the public mobile communication network of structure, only one of chosen group mobile station (18) is in comprises a access private network component. The is chosen group mobile station (18) comprises with the public network mark are different private network mark of; the private network member base station system (16,26) multicast the private network mark arranged on the playing control channel. A mobile switching centre (2) forbids the public user mobile station (8) is made of the private network part; the special user mobile station (18) is allowed to as a whole network.