Apple Inc.
Communication Devices and Methods for Operating a Communication Device

Abstract:

A communication device may include a message generator configured to generate a message in accordance with a command set to use a communication service provided by a communication session setup protocol; and a modem circuit coupled to the message generator and configured to operate in accordance with the message generated by the message generator; wherein the message generator is configured to generate the message comprising a command to at least one of control or establish an Internet Protocol Multimedia Subsystem service.