What is the CAPI20.DLL?
 
  When an application wants to communicate with an ISDN card it sends a standard series of commands to the card. These commands form a specification called CAPI. The first version of CAPI is called CAPI 1.1. The second version of CAPI is called CAPI 2.0. This version was designed with advanced operating systems such as Windows 95 and Windows NT in mind.
  CAPI20.DLL is a component of CAPI 2.0 provided with an ISDN CAPI card.
  When a Windows application wants to talk to CAPI 2.0 (in order to control the ISDN card) it normally communicates via the file CAPI20.DLL.
  Each ISDN card manufacturer provides the file CAPI20.DLL for their specific hardware. Normally, you cannot interchange CAPI20.DLL files from different manufacturers.
  The Windows interface to the file CAPI20.DLL is the same for all the hardware manufacturers, even though the inner workings may be different. In this way a Windows application can be written to exploit the CAPI 2.0 specification and work on all ISDN hardware that includes the CAPI20.DLL file.
  Normally the CAPI20.DLL file is located in the Windows directory so that any Windows application can use it.
  The AutoDetect feature in KlasDrive will automatically select the installed CAPI system by searching in the following order :
   
  1. CAPI 2.0 Windows (CAPI20.DLL)
  2. CAPI 2.0 DOS
  3. CAPI 1.1 Windows (CAPI.DLL)
  4. CAPI 1.1 DOS
  You can directly select the CAPI20.DLL file in KlasDrive in the Setup box under File on the menu. Under CAPI System select the "CAPI 1.1 Windows CAPI20.DLL" option.