I'm trying to start a configure TCL as service. According "Cisco IOS Tcl IVR and VoiceXML Application Guide April 20, 2005"; page 186; the ios version required is 12.3(4)T. I have a AS5300 with ios version 12.3(17b). But i can't find the "application"; "service" an "session" commands. What is wrong with my ios version?