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Telephony service providers

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Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2, Windows Server 2008, Windows Server 2008 R2, Windows Server 8 Beta

Telephony service providers

The following telephony service providers are supplied with this version of the Windows operating system.

HID Phone TAPI Service Provider

The Human Interface Device (HID) Phone TAPI Service Provider allows users of TAPI-based programs to make and receive telephone calls by using universal serial bus (USB) telephone handsets connected to their computers. This service provider is installed with Windows Server 2003 operating systems, and it requires no configuration.

NDIS Proxy TAPI Service Provider

The Network Driver Interface Specification (NDIS) Proxy TAPI Service Provider enables TAPI to control NDIS 5 devices. Routing and Remote Access uses this telephony service provider to set up network connections across NDIS WAN devices for My Network Places. This service provider is installed with Windows XP and Windows Server 2003 operating systems. To map addresses for the different types of calls received by the NDIS Proxy TAPI Service Provider on the local computer, see Configure a telephony service provider.

TAPI Kernel-Mode Service Provider

The TAPI Kernel-Mode Service Provider allows TAPI to control NDIS 4 devices. Network Connections uses this telephony service provider to set up network connections across NDIS WAN devices for My Network Places. This service provider is installed with Windows XP and Windows Server 2003 operating systems, and it requires no configuration.

Unimodem 5 Service Provider

The universal modem driver (Unimodem) provides services for data, fax, and voice modems so that users and program developers will not have to learn or maintain modem AT commands to dial, answer, and configure modems. Unimodem performs these tasks by using files that specify the AT command sets and expected responses for modems. These files usually have an .inf extension. Unimodem supports both data and voice, so a modem can be used for data and fax functions, as a speaker phone, as an answering machine, and so on. This service provider is installed with Windows XP and Windows Server 2003 operating systems.

Windows Remote Service Provider

The Windows Remote Service Provider enables a client computer to access and control remote telephony devices connected to a server computer, such as telephones and phone lines. The remote service provider makes the client-to-server link transparent to programs.

Windows Remote Service Provider

The Windows Remote Service Provider resides on the client computer, where it appears as a telephony service provider. When a program makes a TAPI request, the service provider interprets the request and sends it across the computer network to the Telephony service running on the server. The program then uses the telephony service provider for the telephone device installed on the server. By using this solution, clients can share a telephony resource over the network.

The Windows Remote Service Provider is installed with TAPI 2.2 on Windows 2000, Windows Millennium Edition, Windows XP, and Windows Server 2003 operating systems. On Windows 98 and Windows NT Service Pack 4, the Windows Remote Service Provider is included with TAPI 2.1. Windows NT 4.0 and Windows 95 clients need to upgrade to TAPI 2.1.

H.323 TAPI Service Provider

The H.323 TAPI Service Provider allows TAPI-supported programs to engage in multimedia calls with any H.323-compliant terminal on the local area network. It is also designed to work well with standard phone or Internet phone gateways. This service provider supports programs that enable computer users to interconnect and communicate with other people over IP-based networks. This service provider is installed with Windows XP and Windows Server 2003 operating systems.

Multicast Conference TAPI Service Provider

The Multicast Conference TAPI Service Provider supports IP multicast video conferencing for telephony clients. Using IP multicast, users participate in efficient multicasting, sending data to a single conference IP address instead of copying data to all participants in a conference. This service provider is installed with Windows XP and Windows Server 2003 operating systems.

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