Java Telephony Application Programming Interface. JTAPI is a scalable, extensible API integrating both first-party and third-party call control models. The AE Services JTAPI implementation provides access to the complete set of Third Party call control features provided by the TSAPI Service. JTAPI uses the TSAPI Service for communication with Avaya Aura® Communication Manager. For information about JTAPI, see the Avaya Aura® Application Enablement Services JTAPI Programmer’s Guide, 02-603488.