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Network TAPI

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Using xtelsio CTI Client in network via TAPI Server
By means of a TAPI Server you can start xtelsio CTI Client on several network computers. The PBX must provide in addition a suitable TAPI driver (3rd party TSP).

Schematic system configuration:

xtelsio CTI Client Components of the manufacturer of the TAPI Server
Components of Microsoft Components of the PBX manufacturer


TAPI = Telephony Application Programming Interface
TSPI = Telephony Service Provider Interface
TSP = Telephony Service Provider
LAN = Local Area Network


xtelsio CTI Client
The xtelsio CTI Client uses the local TAPI interface (TAPI 2.0).
Komponenten von Microsoft
The local TAPI interface is provided by the local service "telephony" which can manage several TAPI drivers (TSPs) via the TSPI interface. In the picture this is the Remote-TSP.
Komponenten vom Hersteller des TAPI-Servers
TAPI servers are offered by different manufacturers. The TAPI server binds the TAPI driver (TSP) of the PBX and offer its functions on the network.

On the client computers a Remote-TSP which belongs to the scope of supply of the TAPI server is to be installed. The Remote-TSP communicates on the local network with the server.

Komponenten vom Hersteller der Telefonanlage
A TAPI driver (TSP) which is connected by V.24, USB or LAN with the PBX also belongs to the scope of supply of the PBX.

Supplier of TAPI Servers

Microsoft TAPI Server

Windows 2000 Server

In Windows 2000 Server a TAPI server is already included. You find it under

  • Start > Settings > System Control > Management > Computer Management > Services and Applications > Telephony
  • Click on the driver of the PBX => on the right side the TAPI-Lines (line name) of the driver become visible.
  • Click with the right mouse button on a line name and choose "Edit User".
  • About "Add..." you add one or several users who may control and monitor this line.

Hint: The Microsoft TAPI Server offers no additional functions as for example to an off-line call journal.

Installation of the client system (Windows 2000):

  • Open the DOS-Promt via [Start > Run... > "cmd"].
  • Enter the following command (SERVERNAME = computer name of Windows 2000 Server):
    tcmsetup /c SERVERNAME
  • Hints:
    • They must be logged in with administrator's rights on the client PC.
    • the client PC must be registered in the same domain like the server (or an trusted domain).

Documents of Microsoft®:

Estos TAPI Server: www.estos.de

  • The Estos TAPI Server is relatively easy to instal and to configure. It do not need a server operating system, so you can install it also under Windows 98 / ME or Windows 2000 Workstation.
  • For two clients the server can be used free of charge.