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-- ic=VYi ,Vtxrfutr(Z:✓-)Z� YM <br />I Section 6 <br />TAPI - TELEPHONY APPLICATION <br />PROGRAMMING INTERFACE <br />6.1 GENERAL <br />This section describes an optional mode of operation, TAPI - Telephone Ap- <br />plication Programming Interface. <br />The previous version of this mode of operation was referred to as CSV - Cir- <br />cuit Switched Voice. <br />• TAPI is compatible with DBU4 and - in the future with Releases <br />SB /DBU5. <br />l <br />• CSV is compatible with previous releases - SB1, SB2 or SB3. <br />You must set a in <br />parameter the TAPI /CSV configuration string that informs <br />the station whether you are using TAPI or CSV. See below, The TAP! /CSV <br />configuration string. <br />TAPI /CSV is compatible with Executive stations: <br />• Executive set with expanded display; <br />• Executive set with display; <br />• Executive set. <br />as well as with Standard stations: <br />• Display speakerphone set; <br />i <br />• Speakerphone set. <br />The telephone set software version is 5.0 and higher, and the Universal Data <br />Interface card (UDI) card software version is 4.05 or higher. <br />The TAPI/CSV application requires: <br />• A PC running DOS with a standard PC serial communication port; <br />• A dialer software package installed on the PC, such as the Windows 95 <br />dialer; <br />• A Universal Data Interface card installed in the telephone <br />set; <br />• TAPI /CSV hardware kit. <br />( <br />TAPI /CSV creates a direct link between the DIGITAL KEY BX or DIGITAL <br />400 system and a dialing application. It allows a PC user to control telephone <br />calls from the PC, without having to touch the telephone set. The ability to <br />perform several dialing functions directly from the PC is extremely conve- <br />nient for workers who require simultaneous use of the telephone and the PC. <br />6.2 TAPI /CSV CAPABILITIES <br />TAPI /CSV provides Basic Line Services in TAPI. The telephone operations <br />that can be performed by a PC with TAPI /CSV are: <br />• dialing numbers (internal and external); <br />• answering calls (using the handset, headset, or speakerphone); <br />• terminating calls. <br />While performing these functions from the PC, the telephone display and <br />(. LEDs react as if the call were initiated from the telephone. <br />6 -1 <br />