BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a block diagram of an independently managed and controlled wireless carrier network, and an independently managed corporate enterprise network;
FIG. 2 is a diagram of a conventional enterprise network gateway server connected to a wireless carrier network;
FIG. 3 is a diagram of a gateway server system accordingly to one preferred embodiment of the present invention;
FIG. 4A is a diagram of an enterprise data and voice network operably connected using the gateway server system using pure enterprise call control according to one preferred embodiment;
FIG. 4B is a diagram of an enterprise data and voice network operably connected using the gateway server system using split call control according to one preferred embodiment;
FIG. 5 depicts a network architecture according to another preferred embodiment using VoIP systems;
FIG. 6 is a call flow diagram for call origination according to one embodiment of the present invention;
FIG. 7 is a call flow diagram for effecting call delivery using VoIP system according to another preferred embodiment of the present invention;
FIG. 8 is a call flow diagram for effecting mobile termination using VoIP according to another preferred embodiment of the present invention;
FIG. 9 is a diagram of a network architecture for a Legacy (TDM) network according to another preferred embodiment of the present invention;
FIG. 10 is a diagram of a next generation IMS architecture that is backwards compatible with legacy cellular networks based on existing cellular protocols;
FIG. 11 is a diagram of a conventional legacy network architecture that does not support IM;
FIG. 12 depicts a Packet Engine according to another preferred embodiment of the present invention allowing a call server to detect DTMF digit events on the call path;
FIG. 13 depicts one embodiment of the Packet Engine consisting of a user space;
FIG. 14 depicts a Linux kernel module of the Packet Engine;
FIG. 15 depicts the current IMS standard definition;
FIG. 16 depicts one exemplary embodiment of the invention for IMS service;
FIG. 17 and FIG. 18 depict a gateway server carrier (GS-C) configured as an IMS standard-compliant SIP, and associated algorithm; and
FIG. 19 depicts an algorithm for receiving incoming calls on various lines that are to be directed to a subscribers mobile phone.
Patent Application
20070206563
