Selecting a MSC out of a pool of MSCs for communication with an access node in a mobile cellular communication network

Method for controlling a communication of an access node (46), in particular a controller of a base station for a mobile cellular second generation network or a controller of a radio network for a mobile cellular third generation network with an apparatus mobile services switching (12) of a set of different apparatuses mobile services switching (12-1, ........., 12-n), comprising the step of contacting a switching device mobile service (12) selected to provide a communications service, characterized in that the assembly comprises apparatus mobile services switching (12-1, ........., 12-n) offering specific services dedicated the which are not generally available in the set, and the method buy the step of: - selecting a device mobile services switching (12) set in view of the specific services offered by the mobile switching equipment services (12- 1 ......... 12-n) of the set dedicated to provide communications service.