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Cinterion MC75i reports "SIM not inserted" during normal use | Thales IoT Developer Community

July 3, 2019 - 6:54pm, 3630 views

Good morning,

we use the module (ati1 response):
MC75i
REVISION 02.004
A-REVISION 01.000.15

as communication module( by gprs connection) in a fleet of trains.
During normal operation, especially in specific routes, the MC75i module lose the SIM and conseguently also the communication is lost.
After an unpredictable time the SIM reappears.
Sim cards used are provided by "TIM IT", but use a private APN.

I report some logs when this behaviours happen:

[30-06-2019 17:50:08.968] - [GSMLOG] Command sent: AT^SCID
AT^SCID
+CME ERROR: SIM not inserted

[30-06-2019 17:50:11.427] - [GSMLOG] Response:AT^****?
+CME ERROR: SIM not inserted

[30-06-2019 17:50:11.428] - [GSMLOG] Begin SIM issue in critical error
[30-06-2019 17:50:11.429] - [GSMLOG] Command sent: AT^SIND?
AT^SIND?

^SIND: battchg,1,3
^SIND: signal,1,99
^SIND: service,1,0
^SIND: sounder,1,0
^SIND: message,1,1
^SIND: call,1,0
^SIND: roam,1,0
^SIND: smsfull,1,1
^SIND: rssi,1,2
^SIND: audio,0,0
^SIND: simstatus,0,5
^SIND: vmwait1,0,0
^SIND: vmwait2,0,0
^SIND: ciphcall,0,1
^SIND: adnread,0,0
^SIND: eons,0,0,"",""
^SIND: nitz,0,,,
^SIND: lsta,0,0
^SIND: band,0,3
^SIND: simlocal,0,1

OK

[30-06-2019 17:52:17.088] - [GSMLOG] Command sent: AT^SIND?
AT^SIND?

^SIND: battchg,1,3
^SIND: signal,1,99
^SIND: service,1,0
^SIND: sounder,1,0
^SIND: message,1,1
^SIND: call,1,0
^SIND: roam,1,0
^SIND: smsfull,1,1
^SIND: rssi,1,1
^SIND: audio,0,0
^SIND: simstatus,0,0
^SIND: vmwait1,0,0
^SIND: vmwait2,0,0
^SIND: ciphcall,0,1
^SIND: adnread,0,0
^SIND: eons,0,0,"",""
^SIND: nitz,0,,,
^SIND: lsta,0,0
^SIND: band,0,3
^SIND: simlocal,0,0

OK

[30-06-2019 17:58:43.938] - [GSMLOG] Command sent: AT^SIND?
AT^SIND?

^SIND: battchg,1,3
^SIND: signal,1,99
^SIND: service,1,0
^SIND: sounder,1,0
^SIND: message,1,0
^SIND: call,1,0
^SIND: roam,1,0
^SIND: smsfull,1,0
^SIND: rssi,1,2
^SIND: audio,0,0
^SIND: simstatus,0,0
^SIND: vmwait1,0,0
^SIND: vmwait2,0,0
^SIND: ciphcall,0,1
^SIND: adnread,0,0
^SIND: eons,0,0,"",""
^SIND: nitz,0,,,
^SIND: lsta,0,0
^SIND: band,0,3
^SIND: simlocal,0,0

OK

[30-06-2019 17:58:50.668] - [GSMLOG] Command sent: AT^MONI
AT^MONI

Serving Cell                                          I Dedicated channel
chann rs  dBm MCC MNC  LAC cell NCC BCC PWR RXLev  C1 I chann TS timAdv PWR  dBm Q ChMod
   17 34  -76 222  01 D871 0A9E   2   5  33  -105  28 I    Limited Service

OK

Do You have any suggestions/requests of details?

Thanks in advance