A method and apparatus for allowing a transparent service option transition between
at least two wireless communication devices (WCDs). A first communication between
a first WCD and a second WCD is established using a first service option. At some
point during the first communication, a transition to a second service option,
such as an asynchronous data service option, is initiated. At least one of the
WCDs provides an identification code to the other WCD using a signaling protocol
over the first service option. The first communication is then terminated. A second
communication using the second service option is then initiated by one of the WCDs,
resulting in a seamless transition to the second service option.