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Identify the call from PC or Instrument

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Name: Sunil
Date: December 15, 2001 at 03:13:28 Pacific
Comment:

Hi,

I wrote program to transfer the data from Remote PC to Central PC thru telephone line. Remote PC Modem is in ready state to receive the call from Central PC. When there is a call, Remote PC transfer the data to Central PC. If you make call from instrument(not from Central PC) the remote PC detect the Ring and try to send the data. I want to know how to detect the call is from either Central PC or from instrument. I wrote this program in Visual Basic.
Please Answer.
Thanks.



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Response Number 1
Name: Renjith
Date: December 21, 2001 at 07:08:50 Pacific
Reply:

i think u done it by using some COM with Sockets..just put a header info for the request.then u can recognise wheather it is from central pc or some other device..
use some bit patterns,tz a standard than a hot string


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