Hello.
I'm using a few FMB640. Sometimes (predominatly on stops) devices can't send packs. On the server connection indicator displayed "device connect" only 3-5 sec.
When I send SMS commands, it send actual information (GPS, IO, GSM). After flush command I recive this answer (ip and port is actual): "FLUSH SMS Accepted. 3549 records found on FLASH. Minimum Records to Send: 1.Gprs[0]:1 Server 0 Enabled: 1. Server 1 Enabled: 1. Time Sync: 1."
Answer after getstatus command: "Data Link: 1(22) GPRS: 1(1) Phone: 0 SIM: 0 OP: 25001 Signal: 4 NewSMS: 0 Roaming: 0 SMSFull: 0 LAC: 19851 Cell ID: 5136 Network Type: 1 SIM1"