IP Office Computer Telephony Integration (CTI) link is available in two versions, Lite and Pro. These versions provide run-time interfaces for applications to use. The Software Development Kit (SDK) provides documentation on both Lite and Pro interfaces for software developers.

Both the Lite and Pro versions are the same programs. After you install the CTI Link Pro licence key, additional functionality is activated. For more information on programming, see IP Office TAPI Link Developer’s Guide and Avaya IP Office™ Platform DevLink Programmer’s Guide.

• IP Office CTI Link Lite – IP Office CTI Link Lite is a free of charge application and contains the following component:

  • TAPILink Lite: Implements Microsoft Telephony Application Programming Interface (TAPI) and allows programs to control one telephone line on each computer. TAPILink Lite supports simple CTI, including answer, hang up, make call, transfer, and screen-popping functionality. For more information on TAPILink Lite and TAPILink Pro, see IP Office TAPI Link Developer’s Guide.

• IP Office CTI Link Pro – IP Office CTI Link Pro includes all of the Lite functionality and the following components:

  • TAPILink Pro: Provides both first-party and third-party TAPI control of telephony devices. In addition to the functionality provided by TAPILink Lite, the Pro version also adds the ability to receive information on ACD queues, hunt groups, and provides additional advanced functionality.

  • DevLink Pro: Provides a real time event stream that includes information on trunk activity and telephone activity as and when that activity occurs.