The present disclosure provides a method and system for passing information required by a wireless procedure in a hybrid wireless network (300) before the procedure is invoked, the hybrid wireless network (300) having at least one radio access network (304, 306, 307) based on a first technology and a core network (302) based on a second technology. The hybrid network (300) implements a special mobile switching center (308) to be a "double agent" passing information between the mobile terminal (310, 320, 364) and entities in its core network (302). In the context of messaging, the message contents may be encoded, packaged, and decoded appropriately. The present disclosure does not introduce any changes to telecommunication standards such as the GSM and CDMA standards governing the messaging process.