Abstract: A method for operating a first communications device includes transmitting a provisioned network list to an access router, and receiving a logical router interface address for each network in the provisioned network list. The method also includes transmitting a first message to one of the logical router interface addresses corresponding to a first selected network, receiving a first address prefix for a first gateway router of the first selected network, and transmitting a first packet to a second communications device, the first packet including the first address prefix as a source prefix.

Abstract: A communications system includes nodes and terminals capable of being involved in a telephony session. Telephony cookies may be created in telephony sessions between a calling terminal and a called terminal. The telephony cookies may be created by the called terminal and sent to the calling terminal for storage. Contents of the telephony cookie may include identifiers of the calling terminal and the called terminal. Other contents may include the date and time the cookie was created, expiration data and time of the cookie, and a data field that can store other types of information relating to telephony sessions.

Abstract: There is disclosed a wireless communication system, including a distributed HLR, for tracking the location of mobile terminals moving between zones. There is also disclosed a method for distributing and managing the load created by the HLR functionality among a number of separate processing machines. The method permits dynamic load balancing among the HLRs to more evenly distribute the load.