I hope someone can help. I am using the nokia 6210 with DLR-3P cable to serial port of PC.
Originally I had problems in sync the modem with my program, and Hyperterminal always worked. I had to use a null-modem interface at the PC end and together with AT&F&K3 command it always responds.

The application uses AT to verify if modem is working or not, once every 5 minutes. The system works perfect for SMS, as it is monitoring remotely an industrial machine.

My problem now is that after 1 day of operation, the mobile freezes its communications or loses sync, that it only works again if I go there switch it off and back on again.

Anybody knows a AT command to produce a "hard reset" into the 6210? this would solve my problem.

cheers, M.