Cisco Cisco Computer Telephony Integration Option 8.5 Developer's Guide

4-42

CTI OS Developer’s Guide for Cisco Unified Contact Center Enterprise

Release 8.5(1)

Chapter 4 Building Your Application

Making Requests

Telephony requests are made through either an Agent object or a Call object by calling the appropriate
API methods listed in Chapters 9 and 10. It is important to ensure that a user not be able to make multiple
duplicate requests before the first request has a chance to be sent down to the switch and the appropriate
events be sent back to the application, since this will result in either multiple failures or unexpected
results.

Preventing Multiple Duplicate Requests

Since it is important for a custom application to prevent a user from making a number of duplicate
requests, it should not allow the user to click the same button many times. In order to do this, it is
recommended that a custom application disable a clicked button until such time as it should be
re-enabled, indicating that it would be all right for the user to click it again.

Some examples of when Sample softphones re-enable a button that has been clicked and disabled are
listed below:

•

re-enable Connect/LoginBtn when:

–

LoginDlg canceled

–

ControlFailure or CTIOSFailure when login is in progress

–

In ProcessOnConnectionClosed()

•

re-enable Logout/DisconnectBtn when:

–

Logout ReasonCodes are required & Dlg pops up, but user clicks Cancel

•

re-enable NotReadyBtn when:

–

NotReady ReasonCodes are required & Dlg pops up, but user clicks Cancel

•

re-enable DialBtn, TransferBtn or ConferenceBtn when:

–

DialPad was closed with Cancel rather than Dial, depending on which was originally clicked

•

re-enable TransferBtn & ConferenceBtn when

–

received ControlFailure with MessageType parameter set to eConsultationCallRequest

•

re-enable EmergencyBtn when

–

received ControlFailure with MessageType parameter set to eEmergencyCallRequest

•

re-enable SupervisorAssistBtn when

–

received ControlFailure with MessageType parameter set to eSupervisorAssistRequest

•

re-enable any AgentStateBtn when

–

received ControlFailure with MessageType parameter set to eSetAgentStateRequest &
lastAgentStateBtnClicked was the appropriate one

•

re-enable any of the buttons when

–

received OnButtonEnablementMaskChange indicating the button should be enabled.