GPRS or Edge Howto?

Hello Gordon,

I tried to solve it like this yesterday night:

  /* Send data. Returns the number of bytes sent - 0 is ok.
  Less than 0  */
  send: function(sckt, data) {
    if (busy || at.isBusy() || socks[sckt]=="Wait") return 0;
    if (!socks[sckt]) return -1; // error - close it
    busy = true;
    at.register('>', function() {
      console.log('READY');
      at.unregister('>');
      at.write(data);
      return "";
    });
    at.registerLine(sckt + ', SEND OK', function() {
      at.unregisterLine(sckt + ', SEND OK');
      busy = false;
      return "";
    });
    at.cmd('AT+CIPSEND='+sckt+','+data.lengt­h+'\r\n');
    at.debug();
    return data.length;
  }
};

But for some reason I ran into a deadlock situation where busy was set to true but no SEND OK came in to remove it in some cases.

I will try your solution without waiting for SEND OK and give you a feedback.