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Telephony Server Application Programming Interface (TSAPI)

Definition - What does Telephony Server Application Programming Interface (TSAPI) mean?

Telephony server application programming interface (TSAPI) is a computer telephony integration standard that enables telephony and computer telephony integration (CTI) application programming.

The foundation of TSAPI is the European Computer Manufacturers Association’s (ECMA) standard CTI definition of computer-supported telecommunications applications (CSTA).

TSAPI is built with multiple Netware server control commands for call logging, call switching and voice mail. Although similar to the Microsoft/Intel telephony API (TAPI), TSAPI does not require call switching.

Novell and AT&T developed TSAPI to enable third-party control of CTI applications connected to local area networks (LANs). TSAPI is used by telephone system and LAN server data links for multiple phone and computer application controls.

Techopedia explains Telephony Server Application Programming Interface (TSAPI)

TSAPI includes telephony services with the following hardware and software components:

  • CTI link
  • CTI link hardware
  • Switch driver
  • Switch driver interface
  • Telephony services module
  • Telephony server
  • Telephony server library
  • Telephony client library

TSAPI was developed when wide area network (WAN) systems based on dedicated circuit-switched links were popular. Such systems served as data carriers with dedicated endpoint channels. Modern systems separately route data pieces to destination endpoints.

TSAPI is compatible with the following clients:

  • Microsoft Windows 95 and NT
  • Novell NetWare
  • IBM OS/2
  • Apple Macintosh
  • UnixWare

TSAPI is also compatible with the Novell NetWare and Microsoft Windows NT server environments.

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