Client modem restarts

Hi I am using Q24+ module for server-client communication i am sending large data from server to client and displaying the same at client end on hyperterminal. Sometimes the client restarts while the data collection is in progress. this happening with one client modem but when i replace it with other modem it wont restart.This is not consistantly happening but happening twice or thrice a day randomly :frowning: Is there anything to be done on modem settings …please help me

Thanks in advance,
Chethu

Could you post some code so we could see it. I suppose it is about hte buffer size.