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COMMON-ISDN-API (CAPI) is an application programming interface standard used to access ISDN equipment connected to basic rate interfaces (BRI) and primary rate interfaces (PRI). By adhering to the standard, applications can make use of well defined mechanism for communications over ISDN lines, without being forced to adjust to the idiosyncrasies of hardware vendor implementations. ISDN equipment vendors in turn will benefit from a wealth of applications, ready to run with their equipment.
COMMON-ISDN-API can be used for implementing applications for the following platforms:
- DOS
- Windows ME, Windows 2000, Windows XP
- Netware
- Linux
- OS embedded CMX, RTK, DART, NUCLEUS,…
COMMON-ISDN-API includes following functionality:
- Basic call control
- Supplementary Service control
- CTI support
- DTMF detection / generation
- Support for multiple applications
- Support for multiple ISDN-controller
COMMON-ISDN-API supports following protocols:
- HDLC, HDLC inverted, SDLC
- X.75, X.25
- LAPD, X.31
- V.110, V.120
- T.30 (fax group 3)
- analog modem protocols
- PCM (speech)
- 56 kbit
COMMON-ISDN-API is independent from the national signaling protocols like:
- Euro-ISDN (ETS 300 102)
- DSS-1 (Q.931)
- National ISDN 1 (NI-1)
- Northern Telekom ISDN (DMS-100)
- AT&T ISDN (5ESS)
- French ISDN (VN3)
- German ISDN (1TR6)
- DSS-2 (Q.2931)
- GSM
