NB-IoT Module Series
BC26 AT Commands Manual
BC26_AT_Commands_Manual 19 / 73
1. If the EPS MT in GERAN/UTRAN/E-UTRAN also supports circuit mode services and/or GPRS
services, the AT+CREG command and AT+CGREG command can be used to query the registration
status and location information for those services.
2.
3GPP TS 24.008
and
3GPP TS 24.301
specify the condition when the MS is considered as attached
for emergency bearer services.
3.
3GPP TS 44.060
specifies the system information messages which give the information about
whether the serving cell supports EGPRS.
4.
3GPP TS 25.331
specifies the system information blocks which give the information about whether
the serving cell supports HSDPA or HSUPA.
5. 3GPP TS 44.018 [156] specifies the EC-SCH INFORMATION message which, if present, indicates
that the serving cell supports EC-GSM-IoT.
6. 3GPP TS 36.331 [86] specifies the system information blocks which give the information about
whether the serving cell supports NB-IoT, which corresponds to E-UTRAN (NB-S1 mode).
Example
AT+CEREG=1
//Enable network registration URC.
OK
AT+CEREG?
+CEREG:1,1
OK
AT+CEREG=?
+CEREG:(0-5)
OK
2.9. AT+CSCON Signalling Connection Status
The command gives details of the
terminal‟s perceived radio connection status (i.e. to the base station). It
returns an indication of the current state. Please note that this state is only updated when radio events,
such as sending and receiving, take place. This means that the current state may be out of date. The
terminal may think it is "Connected" yet cannot currently use a base station due to a change in the link
1 0 0 value is incremented in multiples of 30 seconds
1 0 1 value is incremented in multiples of 1 minute
1 1 0 value is incremented in multiples of 320 hours
1 1 1 value indicates that the timer is deactivated
NOTES
