CAPI

CAPI (common application programming interface) is a standardized interface for the Programming of ISDN cards. CAPI could be used as an interface for ISDN communication between the program and the card driver as the standard program. CAPI guarantees a easy access from any number of applications on ISDN adapter cards. To this end their unrestricted usability thanks to their standardized set of commands functionality safe. As a uniform ISDN software interface, CAPI enables higher protocols and specific Connecting ISDN applications to ISDN via a standard software interface. The CAPI interface has several properties:

• Multiple B-channel support for data and voice
• Handling of the B-channel protocol for connection control
• Support for many logical applications
• Use of multiple communication protocols
• Selection of different services
• Support for one or more basic connections.