ISDNphone software enables making phone calls from a PC with an ISDN adapter for computer-telephony. Speech processing is integrated into the application.

ISDNphone also boasts an easy-to-use graphical user interface that can be controlled by mouse and/or keyboard. You can make phone calls directly from the built-in phonebook, which includes speed dial options, or from external applications using TAPI or the command-line. Furthermore, you can record and store voice data on disk and use the call journal as a call monitor to get detailed information about your calls.
One of the best things about ISDNphone is its powerful integration of ISDN-features like call forwarding and call deflection. This allows you to redirect callers to different numbers, giving you added flexibility and control over your phone calls.
ISDNphone is available in two different modes: Standard Mode and DSP-Mode. The Standard Mode costs 25 EUR and offers basic functionality, while the DSP-Mode costs 60 EUR and includes support for DSP-ISDN-adapters for high-quality audio processing.
Version 2.2: N/A