A method for transmitting a call control/mobility management (CC/MM) message from a synchronous core network to an asynchronous radio network, the radio network having a mobile station (MS), a base transceiver station (BTS), and a base station controller (BSC), the method comprising the steps of:
- a) receiving a message received from the synchronous core network, the message having parameters to be bypassed and parameters not to be bypassed;
- b) determining whether the parameters are to be bypassed or not;
- c) bypassing the parameters to be bypassed to the mobile station if the parameters are to be bypassed;
- and
- d) processing the parameters not to be bypassed and generating a processed message if not.