Abstract: A system and method are described for providing least-cost call routing for mobile wireless devices having access to voice-over-IP (VoIP) infrastructure, such as may be operated by an enterprise having global presence. Using a local wireless connection, such as a wireless local area network (WLAN), a software agent on the mobile wireless device registers with a common, enterprise-wide registrar, which, in turn, informs a VoIP gateway in the device's home region of the device's new location. The home region VoIP gateway will then re-route incoming calls for the device to a VoIP gateway serving the region in which the device is currently located. The local VoIP gateway will then route the call to the device via the WLAN. Seamless routing occurs even when the wireless device obtains a local phone number in a foreign network. Outgoing calls from the device can be routed via the VoIP infrastructure or the foreign network based on availability of service and/or cost.

Abstract: A method and system for communicating the identity of devices detected in a wireless communication system. The devices connect to a mobile wireless network comprising a wireless access network and a core Internet Protocol (IP) network. The identities of devices so detected are specified by a combination of device and network-level identities and is communicated to a management server. In an exemplary embodiment, network elements of the core IP network are used to detect and convey the identity of wireless devices to a management server.

Abstract: A system and method for retrieving the dynamic state of mobile communication devices is disclosed. The key state indicators from mobile communication devices are retrieved to target user requested contents or advertising contents for users of the communication devices. The method for delivering the contents to mobile communication devices includes determining key state indicators (KSI) of mobile communication devices sending the determined values to a server, and orienting the values to send the content to users of said mobile communication devices, on request. The key state indicators of mobile communication devices comprises of device state, link state, network state, behavior state and dynamic state of the device. The values of key state indicators are calculated and stored in said mobile communication device in a Mobile Advertising Record (MAR) format.