Telephony - Windows Vista Service
Provides Telephony API (TAPI) support for programs that control telephony devices on the local computer and, through the LAN, on servers that are also running the service.
This service also exists in Windows 10, 11, 7, 8 and XP.
Startup Type
| Windows Vista edition | without SP | SP1 | SP2 |
|---|---|---|---|
| Starter | Manual | Manual | Manual |
| Home Basic | Manual | Manual | Manual |
| Home Premium | Manual | Manual | Manual |
| Business | Manual | Manual | Manual |
| Ultimate | Manual | Manual | Manual |
Default Properties
| Display name: | Telephony |
| Service name: | TapiSrv |
| Type: | share |
| Path: | %WinDir%\System32\svchost.exe -k NetworkService |
| File: | %WinDir%\System32\tapisrv.dll |
| Error control: | normal |
| Object: | NT AUTHORITY\NetworkService |
| Privileges: |
|
Default Behavior
The Telephony service starts as NT AUTHORITY\NetworkService and runs in a shared process of svchost.exe. If Telephony fails to start, the error is recorded into the Event Log. Windows Vista startup proceeds, but a message box is displayed informing you that the TapiSrv service has failed to start. If you disable this service, then 3 other services will be unable to start (see the "Dependencies" section below).
Dependencies
The Telephony service won't start, if the following system components are stopped or disabled:
If the Telephony is stopped, the following services will not start and initialize:
Restore Default Startup Type of Telephony
Automated Restore
1. Select your Windows Vista edition and Service Pack, and then click on the Download button below.
2. Save the RestoreTelephonyWindowsVista.bat file to any folder on your hard drive.
3. Right-click the downloaded batch file and select Run as administrator.
4. Restart the computer to save changes.
Note. Make sure that the tapisrv.dll file exists in the %WinDir%\System32 folder. If this file is missing you can try to restore it from your Windows Vista installation media.