Int 21 Fn DC  - Novell Netware - Connection Services - Get Connection Num  [N]

   AH = DCh

Return: AL = logical connection number
       00h if NetWare not loaded or this machine is a non-dedicated server
   CX = station number in ASCII (CL = first digit)

Notes: this function is supported by NetWare 4.0+, Banyan VINES, and Alloy
     NTNX
   station number only unique for those PCs connected to same semaphore
     service