Introduction

estos ECSTA for OpenScape Voice offers multiple Telephony Service Providers for Microsoft® Tapi 2.1 (also 2.2 and 3.0). These Tapi drivers implement a central communication between a PC and the Telephony system (PBX). On this Server, all devices from the PBX are shown as Tapi lines.
All estos ECSTA for OpenScape Voice drivers use the powerful CSTA Interface to communicate with the PBX.

For installation and administration of the driver see Driver administration.

Supported PBX systems
All PBX systems of the Siemens Hipath 8000 / Unify OpenScape Voice family.

PBX	Driver
Hipath 8000 Version 3.1 and newer	ECSTA for OpenScape Voice
OpenScape Voice Version 3.1 or newer	ECSTA for OpenScape Voice

Using in the network
After installing the driver, you may use all configured line devices on the server as TAPI-lines. If you are using a server based CTI Software, you may install it now. To have the TAPI-devices available on all workstations, the TAPI-driver must be distributed in the network. There are the following options:

1. estos UCServer
   The estos UCServer is a CTI/UCC server software which distributes the telephony information across the network using a graphical client or a multi-line TAPI driver. Workgroups, domains, Active Directory® and Terminal Server are supported.
2. estos CallControlGateway
   The estos CallControlGateway for Lync/OCS is a gateway that connects the TAPI-lines with the Lync/OCS server. This enables the Lync/OCS client to use traditional telephone devices via Remote Call Control (RCC).
3. Windows® Telephony Server
   The Windows® Telephony Server is a component of Windows® server operating systems since Windows® NT. You will need a domain. The service is limited to domain users.