Patent ID: 8667564

Claim:
A system for dynamically configuring a Session Initiation Protocol (SIP) Proxy address for a mobile device, the system comprising: the mobile device that operates to send an authentication request and a bootstrap request to a gateway; the gateway that operates to send the authentication request to an authentication provider, to receive a Home Agent address and the SIP Proxy address from the authentication provider, and to send the Home Agent address and the SIP Proxy address to the mobile device in response to the bootstrap request; and the authentication provider that operates to authenticate the mobile device, to obtain the Home Agent address associated with a Home Agent chosen to be used by the mobile device, to obtain the SIP Proxy address from a preconfigured list of SIP Proxy servers that have been statically assigned to Home Agents, wherein the SIP proxy address represents a SIP proxy server previously assigned to the chosen Home Agent, wherein the list of SIP Proxy servers associated with Home Agent addresses is further associated with one or more communication paths in a network, wherein the list of SIP Proxy servers is preconfigured to represent the most efficient communication path within the network between each Home Agent and an associated SIP proxy server based on a location of the associated SIP Proxy server with respect to the Home Agent, and to send the Home Agent address and the SIP Proxy address to the gateway.