Cisco Cisco Computer Telephony Integration Option 9.0 Developer's Guide

The following events are generated, based on the state of the call:

OnCallBegin: Indicates that the call has entered the setup phase.

OnCallDelivered: Generated when the call starts ringing. 

OnCallEstablished: Generated when the call is answered.

OnCallCleared: Generated when the voice connection is terminated (e.g. call hung up).

OnCallEnd: Generated when the logical call appearance (including call data) is complete.

In addition to the events and states shown in 

, the following are typical call events used for 

CTI applications:

OnCallHeld: Generated when the call transitions from the active to held state.

OnCallRetrieved: Generated when the call is removed from hold.

OnCallTransferred: Indicates that the call has been transferred to another party.

OnCallConferenced: Indicates that a new party has been added to the call.

The foregoing is only a brief sample of the events available via CTI OS. The complete set of events 
available for CTI developers is detailed in later chapters in this guide.

In addition to being able to respond to asynchronous events, a CTI enabled application can make 
programmatic requests for services via the CTI interface. Specifically, the CTI application uses the 
request-response mechanism to perform agent state and third-party call control, and to set call context 
data.

The typical request-response flow for CTI uses the model shown in 

:

CALL

BEGIN

CALL
DELIVERED

CALL
ESTABLISHED
(answered)

CALL
CLEARED

CALL E

TALKING

WRAP UP

RINGING

CALL SETUP