I would like to use my D211 as a modem with AT commands.

- Software installed V433

- Hyperterminal works fine

- Microsoft MSCOMM32.OCX crashes with error 8020 "error reading comm device"

- Microsoft is stating in Q 318784:
PRB: MSComm.Input Returns comReadError (8020) with Some Serial Ports.

A serial driver should return SUCCESS synchronously for all read requests
that can be immediately fulfilled with data that is currently present.

This problem is only known to occur with some third-party serial drivers. To
correct the problem, contact the manufacturer of the serial driver to obtain
an updated driver.

How can I solve this problem?


See More: D211 VB MSCOMM32 Problem