A method for an application function (AF) device in a wireless cellular network including the steps of determining with a processing unit whether an application service requires confirmation that a transmission path for corresponding application service media is available to progress set up of an application service session. There is the step of sending a message generated by the processing unit through a network interfacing unit to a policy and charging rule function (PCRP) server to indicate whether the application service requires confirmation that the transmission path for the corresponding application service media is available. An application function (AF) device in a wireless cellular network including a processing unit which determines whether an application service requires confirmation that a transmission path for corresponding application service media is available to progress set up of an application service session. The AF device includes a network interfacing unit that sends a message generated by the processing unit to a policy and charging rule function (PCRF) server indicating whether the application service requires confirmation that the transmission path for the corresponding application service media is available. A method for a policy and charging rule function (PCRF) server in a wireless cellular network. A policy and charging rule function (PCRF) server in a wireless cellular network.