A portable electronic device includes a housing, a processor supported by the housing, a memory coupled to the processor, and a communications transceiver coupled to the processor. The transceiver is configured to support voice conference calling between more than two parties. A program stored in the...http://www.google.com.au/patents/US7231208?utm_source=gb-gplus-sharePatent US7231208 - User interface-technique for managing an active call
