CTI server provides the CTI Protocol and Interfaces to the ICM PG.(Peripheral Gateway). CTI OS connects to CTI Server and provides a set of Client Interface Libraries (CILs) for implementing CTI applications without having to know the particulars of a specific ACD. CTIOS publishes button enablement events for CTIOS Clients to use.

CTI Manager is a Callmanager term for the native Callmanager CTI support. Further questions about Callmanager CTI should be directed to one of the Callmanager API support forums.