Patent 7697471 was granted and assigned to Nokia on April, 2010 by the United States Patent and Trademark Office.
A controller for a communications system comprises an input and an output for communicating with nodes connected to the communications system. The controller is provided with a processor for determining presence of an address translator entity between a first node and a second node. The controller is further configured for generating an indication of the presence of the translator entity for sending to another node.