4D TAPI Plug-in will allow you to develop 4D applications, which can work with TAPI (Telephony Application Programming Interface). It means that telephony functionality is available now in 4D.

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This Plug-in allows working with telephony devices such as ISDN controller, modem or H323 line. It only depends on the installed TAPI Service Providers (TSP).

4D TAPI Plug-in features:

• Initialize and shutdown TAPI;
• Receive incoming calls from several devices at once;
• Make outgoing calls from a beforehand chosen device;
• Independent control of every call;
• Receive and process information comcerning changes of the call status (the call has been finished, held, etc.);
• Change the call status (hold, hang up, etc.);
• Receive full information about the caller if it has been provided by device;
• Receive information about the device status and call details;
• Get information about the device which accepted the incoming call;
• Generation and detection of DTMF-tone dialer digits;
• Forward calls and arrange conferences;
• Configure modem and fax connections;
• Obtain complete information about device features;
• Manage outgoing calls using different address types;
• IP telephony support - H323 line compatibility.