FX30 Cat-M returning blank or no service to network AT commands

IoT Gateways FX30
1

Hi, why would my FX30S LTE-M be returning blank or “no service” to the following commands?

at!gtand?
!GETBAND: No Service

OK

at!lteinfo?
!LTEINFO:

Serving: EARFCN MCC MNC TAC CID Bd D U SNR PCI RSRQ RSRP RSSI RXLV

IntraFreq: PCI RSRQ RSRP RSSI RXLV

InterFreq: EARFCN ThresholdLow ThresholdHi Priority PCI RSRQ RSRP RSSI RXLV

GSM: ThreshL ThreshH Prio NCC ARFCN 1900 valid BSIC RSSI RXLV

WCDMA: UARFCN ThreshL ThreshH Prio PSC RSCP ECN0 RXLV

CDMA 1x: Chan BC Offset Phase Str

CDMA HRPD: Chan BC Offset Phase Str

OK

cm data and cm radio show the device is connected to the network and its able to create a socket connection and send data etc…

details of the device are

root@fx30s:~# cm info all
Device: FX30S(WP7702)
IMEI: xxxxxxxxxxxxxx
IMEISV: 6
FSN: VU8xxxxxxxxxxx
Firmware Version: SWI9X06Y_02.36.06.00 63d944 jenkins 2020/12/10 19:12:28
Bootloader Version: SWI9X06Y_02.36.06.00 63d944 jenkins 2020/12/10 19:12:28
MCU Version: 002.015
PRI Part Number (PN): 9907957
PRI Revision: 001.000
Carrier PRI Name: GENERIC
Carrier PRI Revision: 001.071_001
SKU: 1103882
Last Reset Cause: Reset, User Requested
Resets Count: Expected: 26 Unexpected: 1
root@fx30s:~#

2

can you check it in “AT!GSTATUS?”

3

This is the reply…

!GSTATUS:
Current Time: 8454 Temperature: 25
Modem Mitigate Level: 0 ModemProc Mitigate Level: 0
Reset Counter: 3 Mode: ONLINE
System mode: LTE PS state: Attached
IMS reg state: UNKNOWN IMS mode: Not Support
IMS Srv State: UNKNOWN SMS,UNKNOWN VoIP
LTE band: B20 LTE bw: 10 MHz
LTE Rx chan: 6400 LTE Tx chan: —
LTE CA state: INACTIVE
EMM state: Registered Normal Service
RRC state: RRC Idle

PCC RxM RSSI: -65 RSRP (dBm): -95
PCC RxD RSSI: -65 RSRP (dBm): -140
Tx Power: – TAC: 0450 (1104)
RSRQ (dB): -12 Cell ID: 07D0BE82 (131120770)

4

I’ve just re-run lteinfo… now I get

at!ltenfo?
!LTEINFO:

Serving: EARFCN MCC MNC TAC CID Bd D U SNR PCI RSRQ RSRP RSSI RXLV
6400 234 10 1104 07D0BE82 20 3 3 9 40 -11.0 -94.5 -67.3 29

IntraFreq: PCI RSRQ RSRP RSSI RXLV
40 -11.0 -94.5 -67.3 29

InterFreq: EARFCN ThresholdLow ThresholdHi Priority PCI RSRQ RSRP RSSI RXLV

GSM: ThreshL ThreshH Prio NCC ARFCN 1900 valid BSIC RSSI RXLV

WCDMA: UARFCN ThreshL ThreshH Prio PSC RSCP ECN0 RXLV

CDMA 1x: Chan BC Offset Phase Str

CDMA HRPD: Chan BC Offset Phase Str

OK

still seems a little incomplete

5

the reasons I am trying these commands is to try an establish if I am connect to LTE-M, NB-IOT or GPRS? How to I work that out?

6

AT!GSTATUS has shows it is in LTE mode

7

Yes, but that does not tell me if it is using LTE-M or NB-IOT… is there anyway of knowing that? LTE covers both…

8

you can use AT!SELCIOT to set to LTE-M only and see if it can register network