GSM Modem gets disconnected after sending few messages

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I am making an sms desktop application using c# and GSM Modem in which user will automatically gets the reply of his message after querying the database. for this purpose i am using timer so that at every second application checks for any received message and then after querying the database application will send the required information to the user. problem i am facing here is modem gets disconnected after sending a few messages. i tried with different values of timeout but no success. Can any one help me in this??

Posted 15-Jun-12 6:44am

Amen3

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Mohammad Reza Valadkhani · Answer 1 · 2012-06-28T19:27:00

it`s better to make an event receiver to determine when message received .
I think to set this option on GSM modem to show message when it received is AT+CNMI ( just Google it ) . you don`t need any timer for checking , if you do what i said it`s easy to use serialport_datareceived event handler to check what your GSM modem indicate and analysis the data and do what ever you want.
if your modem is disconnected check your connection i don`t think it`s depends on your software ,
goodluck