Quote Originally Posted by aratti View Post
Was hyperterminal in hand shaking mode?

See the modem manual, if the modem is in handshaking mode by default, in such a case you have to set it for no flux controll.

Al.
I have not got the manual but I have opened the modem and saw that sim300 is the module which the modem is built on. I have checked sim300 datasheet but could not understand many things as I do not have too much of a technical background.

Can you advise me, what AT commands can do this job.
I also find this on the net - http://www.london-electronics.com/alpha_232_conns.gif
Is this an alternate way to go to solve this problem (RTC - CTS connected together & also pins 6,1,4 connected together? I do not want to try it unless it is safe to do so, only have 1 modem

Also, how can I find out if Hyperterminal is in Handshaking mode? One more thing I would like to mention here which I read from sim300 datasheet is that the modem supports and by default has Autobaud from 1200 to 19200.