The TSAPI Service provides third-party call control services. AE Services JTAPI is a client-side interface to the TSAPI service, and, as such it provides third-party call control as well.

For TSAPI (and JTAPI), AE Services provides two types of licenses: the TSAPI Basic Users license, and the TSAPI Advanced license. The TSAPI Advanced license provides access to a different set of features than the TSAPI Basic User license. That is, the Advanced license does not include the capabilities provided by the TSAPI Basic Users license.