Help / WLanguage / WLanguage functions / Communication / Phone functions
  • Overview
  • Required configuration
  • Prerequisite
  • Checking configuration
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Stored procedures
WINDEV allows you to easily manage incoming and outgoing phone calls via the WLanguage phone functions.
These functions allow you to manage a voicemail, an answering machine (or other) directly from a WINDEV application.
Required configuration


To use the telephony features, you must have:
  • a modem.
    • To save and play recordings, this modem must include voice support.
    • To identify the caller, the modem must support Caller ID.
  • the Tapi 2.0 or Tapi 3.1 protocol. These technologies can be used on all systems.

Checking configuration

To check the configuration of your computer, we recommend that you use WDTelDiagno.exe, provided with WINDEV. This tool is used to list the available TAPI lines and to specify the line that will be used by default by the telephony functions. This allows you to quickly detect the conflicts that may occur between the different TAPI lines.
Remark: The TAPI lines differ from the standard phone lines.
Before using the telephony functions, you can define through programming the TAPI device on which the calls must be detected or dialed. Use the functions:
tapiCapabilityReturns the characteristics of a telephony device.
tapiDeviceSelects the TAPI device that will be used during the following telephony operations:
tapiDeviceListLists the TAPI 2.0 and TAPI 3.1 compatible devices installed on the current computer.
Related Examples:
WD Telephony Complete examples (WINDEV): WD Telephony
[ + ] This example presents the telephony functions of WINDEV.
The following topics are presented in this example:
1/ How to dial a phone number
2/ Detect and identify the incoming calls
Summary of the example supplied with WINDEV:
This example presents the telephony functions supplied with WINDEV. Once contacts have been entered in the main window (the table is in edit), you will be able to call them from the application directly (your computer must be equipped with a modem properly installed). You will be able to get a notification for the incoming calls and to identify the caller
Minimum version required
  • Version 9
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Last update: 06/22/2023

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