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09/20/04 14:34
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 +1 Good Question
 +1 Underrated		 #77703 - Inerfacing External modem to 89C52
I am developing a project to transmit data to remote computer via Telephone line(PSTN) using an external modem,which uses conaxant modem chip,I am not able to initialise the modem using 89C52 as I have send the string "AT", and I am not getting OK response from the modem even though I have shorted the RTS-CTS and DSR-DTR. Please Help me to Solve this problem.
thanks

List of 25 messages in thread
TopicAuthorDate
Inerfacing External modem to 89C52            01/01/70 00:00      
   RE: Inerfacing External modem to 89C52            01/01/70 00:00      
   RE: Inerfacing External modem to 89C52            01/01/70 00:00      
   RE: Inerfacing External modem to 89C52            01/01/70 00:00      
      RE: Inerfacing External modem to 89C52            01/01/70 00:00      
         RE: Inerfacing External modem to 89C52            01/01/70 00:00      
            RE: Inerfacing External modem to 89C52            01/01/70 00:00      
               Autobaud            01/01/70 00:00      
               RE: Inerfacing External modem to 89C52            01/01/70 00:00      
                  Disable Autobaud            01/01/70 00:00      
                  RE: Inerfacing External modem to 89C52            01/01/70 00:00      
                     RE: Inerfacing External modem to 89C52            01/01/70 00:00      
                        Why Wrong?            01/01/70 00:00      
      RE: Inerfacing External modem to 89C52            01/01/70 00:00      
         RE: Inerfacing External modem to 89C52            01/01/70 00:00      
            RE: Inerfacing External modem to 89C52            01/01/70 00:00      
               RE: Inerfacing External modem to 89C52            01/01/70 00:00      
         RE: Inerfacing External modem to 89C52            01/01/70 00:00      
         RE: Inerfacing External modem to 89C52            01/01/70 00:00      
         RE: Inerfacing External modem to 89C52            01/01/70 00:00      
   got an 'OK' response            01/01/70 00:00      
      RE: got an 'OK' response            01/01/70 00:00      
      RE: 89c52 at 115.2 K baud rate ?            01/01/70 00:00      
         RE: 89c52 at 115.2 K baud rate ?            01/01/70 00:00      
   Modem Response Strings            01/01/70 00:00      

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