METHOD AND APPARATUS FOR CONTROLLING PUSH-TO-TALK FUNCTIONS OF A MOBILE COMMUNICATION UNIT FROM A UNIT CIRCUIT CARD

摘要

A method and apparatus according to the present invention enable a circuit card of a mobile communication unit to control Push-to-Talk features of a mobile terminal within that unit. The circuit card controls init iation and termination of a Push-to-Talk session for the mobile terminal, thereby enabling a communication network operator to define and develop applications on the circuit card that utilize the Push-to-Talk features.