Call flow system and method for use in a legacy telecommunication system

摘要

A method of operating a network server, such as a mobile application gateway, connect devices on a cellular or carrier network with individual networks, such as enterprise voice and data networks or residential networks. The effects of the present invention are far reaching in terms of transferring effective call control from the cellular network into the control of the individual network, such as the enterprise, and enabling new business models for the purchase of cellular service from a public cellular carrier by an enterprise.

主权项

1. A method, comprising:
receiving, from a mobile switching network, by a carrier gateway server deployed in a public cellular network, a call origination request of a call destined to a mobile station associated with an enterprise network; providing, by an enterprise gateway server, a first routing information to the carrier gateway server, the first routing information comprising at least one policy associated with a member of the enterprise network linked to the call origination request and routing instructions based on the at least one policy, wherein the at least one policy comprises enterprise call routing criteria applied to the call comprising at least one of a restriction on times the call may be routed and restrictions on destinations where the call may be routed; transmitting from the carrier gateway server to the mobile switching network, a second routing information different from the first routing information, the second routing information comprising destination information and call path information for routing the call to a destination; and routing, by the mobile switching network, the call to the destination; supporting, by the enterprise gateway server, call routing between a private branch exchange deployed in the enterprise network and the public cellular network; wherein the enterprise gateway server routes to a final destination via the private branch exchange.