A gateway cluster has a number of gateways for different types of communication protocols. The respective gateways convert network messages to normalized messages by querying the categories, data, and network types of the normalized data for the mobile systems from which the network messages were generated....http://www.google.es/patents/US6563919?utm_source=gb-gplus-sharePatente US6563919 - System and method for unifying the implementation and processing of mobile communications and a unified mobility manager for providing such communications
System and method for unifying the implementation and processing of mobile ...
