?? hm. we do have sim card inserted!
+AT*MICCID
+ToL620:AT*MICCID
+
+*MICCID: 8946032000001290095F
+
+OK
+
+
## read device IMEI
AT+CGSN=1
OK
+AT+CREG?
+ToL620:AT+CREG?
+
++CREG: 0,7
+
+OK
+
## read current NB network band
AT*MBAND?
OK
+AT*MBAND?
+ToL620:AT*MBAND?
+
+*MBAND: 20
+
+OK
+
+## signal quality
+
+AT+CESQ
+ToL620:AT+CESQ
+
++CESQ: 38,0,255,255,28,63
+
+OK
+
++CESQ: <rxlev>,<ber>,<rscp>,<ecno>,<rsrq>,<rsrp>
+
+AT+CESQ=?
+ToL620:AT+CESQ=?
+
++CESQ: (0-63,99),(0-7,99),(255),(255),(0-34,255),(0-97,255)
+
+OK
# other commands from firmware
NUM:3 Idel
+# power off
+
*PWROFF
L620 power off
+## power on - with non working sim
+
+*PWRON
+ToL620:ATE0
+L620 power on
+
+*MATREADY: 1
+
++CFUN: 1
+
++ISOFTSIM:0,ready
+
+## power on - with working sim
+
*PWRON
ToL620:ATE0
L620 power on
+CFUN: 1
++CPIN: READY
+
++IP: 10.181.12.138
+
++EGACT:1,1,1,1
+
+ISOFTSIM:0,ready