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  • Differences between tapiDial and tapiLineDial
  • Limitation
  • Required configuration
WindowsLinuxUniversal Windows 10 AppJavaReports and QueriesUser code (UMC)
WindowsLinuxPHPWEBDEV - Browser code
AndroidAndroid Widget iPhone/iPadApple WatchUniversal Windows 10 AppWindows Mobile
Stored procedures
Dials a phone number for a voice line.
WINDEV Note: By default, the device used is the first TAPI 2-compatible device found. A specific device can be selected by tapiDevice. In this case, this specific device will be used.
PABX application: each line appears as a device. Therefore, to dial on a phone line, you must:
  1. Choose the current phone line (tapiDevice).
  2. Dial (tapiDial).
To do so, use tapiLineDial.
Android To use the telephony application (dialer) of an Android phone, tapiDialerCall must be called.
Note: Depending on the operating system and on the modem driver, a window for call management may be displayed when using tapiDial. This window is used to automatically hang up the current call.
IF tapiDial(EDT_PhoneNumber, "LineStatus")=True THEN
Info("Click OK to hang up")
PROCÉDURE TestLineStatus(ValueLineStatus is int)
SWITCH ValueLineStatus
CASE tapiLineBusy: Message("The line is busy")
CASE tapiLineConnected: Message("OK, connected")
CASE tapiLineDialing: Message("Dialing in progress")
CASE tapiLineDialTone: Message("Dial tone")
CASE tapiLineDisconnected: Message("The correspondent has hung up")
CASE tapiLineProceeding: Message("Searching for your correspondent")
CASE tapiLineRingBack: Message("Ringing")
<Result> = tapiDial(<Number to Dial> [, <Procedure Name> [, <Duration> [, <Custom Parameter>]]])
<Result>: Boolean
  • True if the line is opened: you can pick up the receiver and talk,
  • False otherwise. For more details about the problem, use tapiError.
<Number to Dial>: Character string (with quotes)
Phone number to dial. To specify a prefix (0 for an external line for example), use a comma in the number. For example: "0,0467789066".
<Procedure Name>: Optional character string (with or without quotes)
Name of WLanguage procedure used to manage the progress of dialing. This procedure has the following format:
PROCEDURE <Procedure Name> (<Line Status>, <Parameter>)

The first procedure parameter (<Line status>) is an integer that can take the following values:
tapiLineBusyThe line is currently busy.
tapiLineConnectedThe line is connected.
tapiLineDialingDialing in progress.
tapiLineDialToneThe line gets a dial tone.
tapiLineDisconnectedThe correspondent has hung up.
tapiLineProceedingThe call is dialed: searching for the correspondent.
tapiLineRingBackRinging in progress.
The second procedure parameter (<Parameter>) is the custom parameter passed to tapiDial.
Caution: This procedure must contain no call to the debugger (no breakpoint, no STOP keyword, no auto-stop expression, ...).
<Duration>: Optional integer or optional Duration
Maximum wait duration (in seconds). When this time-out is exceeded, the function assumes that there is no response (nobody picked up).
This parameter can correspond to:
  • an integer corresponding to the number of seconds,
  • a Duration variable,
  • Versions 23 and later
    the direct indication of duration (1 s or 10 ms for example).
    New in version 23
    the direct indication of duration (1 s or 10 ms for example).
    the direct indication of duration (1 s or 10 ms for example).
<Custom Parameter>: Any type, optional
Parameter passed to the WLanguage procedure.

Differences between tapiDial and tapiLineDial

  • tapiDial is used in the context of a single outgoing call. The identifier of this call is not available.
  • tapiLineDial is used in a context where several simultaneous calls can be found. tapiLineDial returns the call identifier. Therefore, it can be easily handled (to transfer a call for example).


tapiDial cannot be called in the procedure for call detection (defined by tapiListen).
WINDEVUser code (UMC)

Required configuration

The telephony functions are using the TAPI 2.0 technology. This technology can be used on all the systems.
However, if the system used is Windows NT4, the service pack 4 (or later) must be installed.
Note: The TAPI 3.0 technology (and later) is not supported in this version.
WINDEVReports and Queries wd230com.dll
Windows Mobile wp230com.dll
Minimum required version
  • Version 9
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