title: What is the normal behavior of '+CEREG' unsolicited messages?
body: <p>My server is receiving data from a Telit ME910C1 LTE Cat-M modem. The unit is placed on a vehicle in movement.</p>
  
  <p>Sometimes the responses are received late, and when it does get the response on time, the cell-id changes.</p>
  
  <p>Please help me narrow down this problem: <strong>I need an explanation about the <code>+CEREG</code> messages attached in the code section below</strong>. </p>
  
  <pre><code>+CEREG: 1,"4CO3","AD9C30F",8 T:(0:43:36)  // server delay starts now 
  +CEREG: 1,"4C01","AE25C11",8 T:(0:47:36)
  +CEREG: 1,"4C01","AE15E10",8 T:(0:49:58)
  +CEREG: 1,"4CO3","AE2DA10",8 T:(0:50:13)
  +CEREG: 1,"4CO3","AE2DAOF",8 T:(0:52:30)
  +CEREG: 1,"4CO3","AE1D010",8 T:(0:52:48)
  +CEREG: 1,"4CO3","AE19611",8 T:(0:54:48)
  +CEREG: 1,"4CO3","AE1960F",8 T:(0:56:9) 
  +CEREG: 1,"4CO3","AE19610",8 T:(0:57:54)
  +CEREG: 1,"4CO3","AE26611",8 T:(0:58:27)
  +CEREG: 1,"4CO3","AE19610",8 T:(0:58:38)
  +CEREG: 1,"4CO3","AE26610",8 T:(0:58:48)
  +CEREG: 1,"4CO3","AE1B411",8 T:(1:2:9)
  +CEREG: 1,"4CO3","AE1B40F",8 T:(1:3:47) 
  +CEREG: 1,"4CO3","AE1B415",8 T:(1:4:23)
  +CEREG: 0 T:(1:7:27)
  +CEREG: 0 T:(1:7:51)
  +CEREG: 2 T:(1:7:52)
  +CEREG: 1,"4CO3","AE1B415",8 T:(1:7:52) 
  +CEREG: 2,1,"4CO3","AE1B415",8 T:(1:8:1)  // Server delay ends here
  +CEREG: 2,1,"4CO3","AE1B415",8 T:(1:8:8)
  +CEREG: 2,1,"4CO3","AE1B415",8 T:(1:10:0)
  +CEREG: 1,"4CO3","AD9E712",8 T:(1:11:30) 
  </code></pre>
  
  <p>My only idea is that there might not be good cell coverage. Could I be right?</p>