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SIM900 and TCPNet not working

Alireza Mashayekh

I try to use TCPnet to dial GPRS using sim900 GSM modem and I try to many difenrent things but TCPnet ppp just simply don’t work for sim900 any help?!
As far as I know problem is sim900 return echo and accept commands with \r\n and TCPNET send commands using \r and it return any reply using ECHO\r\r\nREPLY\r\n and yet another thing is there is no way to set APN using TCPNet any suggest to do that

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  • 0 in reply to Andy Neil

    I do so for sure but there is problem I gonna use this for 1000 devices (AMI project) so there is no way to echo off each of those 1000 sim900 manually and about /r/n yes I'm pretty sure about that
    by the way tanks bro to replay at least and I almost write down my program entirely but how the heck this std_modem work is there any sample or working example to relay on

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  • 0 in reply to Andy Neil

    I do so for sure but there is problem I gonna use this for 1000 devices (AMI project) so there is no way to echo off each of those 1000 sim900 manually and about /r/n yes I'm pretty sure about that
    by the way tanks bro to replay at least and I almost write down my program entirely but how the heck this std_modem work is there any sample or working example to relay on

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