Solution:

1. Prepare a null modem cable to test RS-232 port. 2. On the Windows NT/95/98 Host PC Start the Hyper Terminal (Hypertrm.exe), set the baud rate, COM port ... 3. On the Windows CE Target device Start the pegterm.exe Make a New Session Input any number in the Telephone Number Select Force Local Click Configure ... Select Manual Dial in Port Settings Set the same baud rate as in NT Host 4. Type some words on both keyboards to verify the connection.