Running an Application

When a new call arrives on the line with which an application is associated, WTE navigates to the application's home page. If the 'Automatic answer' option is on (the default setting), the call is answered.

Calling an Application

You can use a telephone to dial the number of the line associated with the application. Alternatively, you can use your own TAPI 3.0 application or Phone Dialer, which is a telephony application distributed with Windows 2000.

To use Phone Dialer to call a Web telephony application

1. Click Start, point to Programs, point to Accessories, point to Communications, and then click Phone Dialer.
2. Click Edit, then click Options.
3. On the Addresses tab, for Internet Calls, select H.323 Line.
4. On the Audio/Video tab, set:
   • Line to Internet Calls.
   • Audio Record and Audio Playback to the audio device driver of the speakers installed on your computer. (WTE will use the IP TAPI device during the call and the sound on the caller party will be directed to the speakers.)
5. Click Dial. In the Dial dialog box:
   • Click the Internet Call radio button.
   • Type the IP address (machine name) of the computer on which the WTE is installed.

Configuration Changes

The WTE periodically checks for configuration changes. After making any configuration changes, wait approximately five seconds for the changes to take effect. The delay between the change in the storage and the time that the service adopts the new configuration is defined by the registry key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Web Telephony Engine under the NotifyPeriodAfterFirstUpdate attribute (the value is in seconds).

An application can force a configuration change to take effect by calling the Win32 ControlService function and specifying the wteServiceRefreshStorage service-control value.