2.3.11 Configuration Information

When a Service Provider is installed, some configuration information must be added to the TELEPHON.INI file to give the Telephony Service required information regarding the Service Provider. A Service Provider vendor must arrange for this information to be updated as part of the Service Provider installation. The Telephony service also provides a tool to allow users to modify the Telelphony service configuration interactively.

Whenever TELEPHON.INI is changed, the Telephony service, its active client applications, and its Service Providers need to be notified. There is a special entry in WIN.INI that facilitates this notification:


[Windows Telephony]=yyyy-mm-dd hh:mm:ss
Whenever the TELEPHON.INI is changed, the application making the change should update this entry with the new time stamp and broadcast the WM_WININICHANGE message. The Telephony service takes care of notifying its client Telephony applications through the TAPI, while Service Providers need to handle this message directly.

The TELEPHON.INI file contains a wide variety of information, only some of which is defined by the TSPI. This section describes only the TSPI-defined information, leaving the other parts to be described where they are relevant.

Within the following description, three kinds of identifying numbers are discussed: