Abstract: A mobile network is adapted to provide a first mobile telephony service to a first group of subscribers and a second mobile telephony service to a second group of subscribers. The mobile network includes a home location register; at least one switching equipment cooperating with the home location register for providing the first mobile telephony service to the first group of subscribers; at least one adapter node cooperating with the home location register and with the switching equipment for providing the second mobile telephony service to the second group of subscribers.

Abstract: A method of making network services available to a subscriber of a first mobile communications network when the subscriber roams in a second mobile communications network. The method includes: intercepting a signaling message issued by a service switching function of the second mobile communications network as a consequence to a service request by the subscriber; checking the intercepted signaling message; and based on the check, updating the intercepted signaling message so as to include service addressing data adapted to invoke a service in the first mobile communications network.