Incorrect Band Searching Configuration for NB-IoT and Cat-M Modes After configuring the PRL(AT+KSELACQ))

IoT Modules Legacy HL Series
1

Module:
HL7812.5.5.14.0

I am configuring the PRL with AT+KSELACQ=0, 2,3,1

AT+KSELACQ?
+KSELACQ: 2,3,1

and then configuring the bands:

cat-m="1,2,3,4,5,8,12,20,66"
nbiot="3,8,20"

[00:00:41.128,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
[00:00:41.128,000] <dbg> modem_hl7812: send_at_cmd: SEND ATCMD k_sem_take RET01 (RESPONSE SEM): 0
+KBNDCFG: 0,000002000000000008089F
[00:00:41.147,000] <dbg> modem_hl7812_rx: hl7812_rx: HANDLE +KBNDCFG:  (len:24)
[00:00:41.147,000] <dbg> modem_hl7812_rx: on_cmd_radio_band_configuration: Parsing CAT-M1 band configuration
[00:00:41.147,000] <dbg> modem_hl7812_rx: on_cmd_radio_band_configuration: CAT-M1 band configuration: 0002 00000000 0008089f
+KBNDCFG: 1,0000000000000000080084
[00:00:41.150,000] <dbg> modem_hl7812_rx: hl7812_rx: HANDLE +KBNDCFG:  (len:24)
[00:00:41.150,000] <dbg> modem_hl7812_rx: on_cmd_radio_band_configuration: Parsing NB-IoT band configuration
[00:00:41.150,000] <dbg> modem_hl7812_rx: on_cmd_radio_band_configuration: NB-IoT band configuration: 0000 00000000 00080084
+KBNDCFG: 2,0

First, read the existing band configuration; if the configurations do not match what I want to use, set the new configuration, and restart.

The problem is that the modem is searching for a number of bands for NB-IoT that I didn’t enable. I enabled only three bands for NB-IoT, but it seems the modem is searching for 19 bands. Additionally, the modem is only searching for three bands for Cat-M, which is the number of bands I set for NB-IoT.

SEE here below in the log:
the modem searches
19 bands for ksrat:1(nbiot)
1 search for GSM
and 3 search for cat-m
(I assume that each +CEREG: 2 and +CEREG: 0 URC notification corresponds to a search for each band.)

this one is a log with KNBNDCFG? query every time we have cereg notification:

[00:00:32.339,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+CFUN=4,1]
OK
+WDSI: 0
+KSUP: 0
[00:00:40.054,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
[00:00:40.058,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+CEREG=0]
OK
[00:00:40.186,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+CREG=0]
OK
[00:00:40.189,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT&V]
[00:00:40.511,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+CMEE=1]
OK
[00:00:40.519,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSELACQ?]
+KSELACQ: 2,3,1
OK
[00:00:40.524,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
[00:00:41.128,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:00:41.152,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KHWIOCFG=3,1,6]
OK
[00:00:41.155,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KPSMEV=1]
OK
[00:00:41.159,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSLEEP=1,2,0]
OK
[00:00:41.165,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+CEDRXS=0]
OK
[00:00:41.169,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+CPSMS=1,,,"00001111","00001111"]
OK
[00:00:41.179,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+CGDCONT?]
+CGDCONT: 1,"IPV4V6",,,0,0,0,0,0,,0,,,,
+CGDCONT: 2,"IPV4V6",,,0,0,0,0,0,,0,,,,
OK
[00:00:41.336,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+WPPP?]
+WPPP: 0,1,"",""
+WPPP: 0,2,"",""
OK
[00:00:41.351,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KCNXCFG=1,"GPRS","",,,"IPV4V6"]
OK
[00:00:41.371,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+CGEREP=2]
OK
[00:00:41.380,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+CREG=3]
OK
[00:00:42.645,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+CEREG=5]
OK
[00:00:42.660,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KTCPCFG?]
OK
[00:00:42.666,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KUDPCFG?]
OK
[00:00:42.672,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+CFUN=1,0]
OK
+CEREG: 2
+CREG: 2
[00:00:42.755,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:00:42.780,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:00:44.279,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:00:44.303,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:00:45.290,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:00:45.315,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:00:46.793,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:00:46.818,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:00:48.813,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:00:48.838,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:00:50.308,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:00:50.333,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:00:53.320,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:00:53.345,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:00:54.823,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:00:54.847,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:00:59.843,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:00:59.867,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:01:01.338,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:01:01.362,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:01:10.357,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:01:10.382,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:01:11.852,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:01:11.876,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:01:28.871,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:01:28.895,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:01:30.365,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:01:30.390,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:01:59.383,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:01:59.408,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:02:00.878,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:02:00.902,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:02:29.895,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:02:29.920,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:02:31.390,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:02:31.415,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:03:00.408,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:03:00.433,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:03:01.903,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:03:01.927,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:03:30.920,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:03:30.945,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:04:45.268,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:04:45.293,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:05:15.286,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:05:15.311,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:05:16.781,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:05:16.805,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:05:45.798,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:05:45.823,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:05:47.293,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:05:47.317,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:06:16.311,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:06:16.335,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:06:17.805,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:06:17.830,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:06:46.823,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:06:46.848,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:08:01.171,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:08:01.196,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:08:31.189,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:08:31.213,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:08:32.683,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:08:32.708,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:09:01.701,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:09:01.726,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:09:03.196,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:09:03.220,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:09:32.213,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:09:32.238,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:09:33.708,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:09:33.733,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:10:02.726,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:10:02.750,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:11:17.063,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:11:17.133,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 2
OK
+CREG: 2
+CREG: 0
[00:11:22.817,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:11:25.070,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 0
OK
+CEREG: 2
+CREG: 0
[00:11:28.647,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:11:28.672,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 0
OK
+CEREG: 0
+CREG: 0
[00:12:58.066,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:12:58.090,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 0
OK
+CEREG: 2
+CREG: 0
[00:13:00.086,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:13:00.110,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 0
OK
+CEREG: 0
+CREG: 0
[00:14:29.484,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:14:29.509,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 0
OK
+CEREG: 2
+CREG: 0
[00:14:32.483,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:14:32.508,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 0
OK
[00:15:18.013,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+CFUN=4,0]
OK

this is a log we run KBND? evertime when we have cereg notif:

[00:00:33.540,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+CFUN=4,1]
OK
+WDSI: 0
+KSUP: 0
[00:00:41.031,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
[00:00:41.035,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+CEREG=0]
OK
[00:00:41.184,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+CREG=0]
OK
[00:00:41.188,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT&V]
[00:00:41.510,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+CMEE=1]
OK
[00:00:41.514,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSELACQ?]
+KSELACQ: 2,3,1
OK
[00:00:41.519,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
[00:00:42.123,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBNDCFG?]
+KBNDCFG: 0,000002000000000008089F
+KBNDCFG: 1,0000000000000000080084
+KBNDCFG: 2,0
OK
[00:00:42.147,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KHWIOCFG=3,1,6]
OK
[00:00:42.151,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KPSMEV=1]
OK
[00:00:42.159,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSLEEP=1,2,0]
OK
[00:00:42.165,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+CEDRXS=0]
OK
[00:00:42.169,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+CPSMS=1,,,"00001111","00001111"]
OK
[00:00:42.178,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+CGDCONT?]
+CGDCONT: 1,"IPV4V6",,,0,0,0,0,0,,0,,,,
+CGDCONT: 2,"IPV4V6",,,0,0,0,0,0,,0,,,,
OK
[00:00:42.335,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+WPPP?]
+WPPP: 0,1,"",""
+WPPP: 0,2,"",""
OK
[00:00:42.350,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KCNXCFG=1,"GPRS","",,,"IPV4V6"]
OK
[00:00:42.371,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+CGEREP=2]
OK
[00:00:42.380,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+CREG=3]
OK
[00:00:42.931,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+CEREG=5]
OK
[00:00:42.945,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KTCPCFG?]
OK
[00:00:42.950,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KUDPCFG?]
OK
[00:00:42.957,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+CFUN=1,0]
OK
+CEREG: 2
+CREG: 2
[00:00:43.259,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:00:43.420,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:00:44.782,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:00:44.788,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:00:45.794,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:00:45.800,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:00:47.297,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:00:47.303,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:00:49.317,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:00:49.323,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:00:50.812,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:00:50.818,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:00:53.824,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:00:53.830,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:00:55.326,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:00:55.332,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:01:00.346,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:01:00.352,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:01:01.841,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:01:01.847,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:01:10.861,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:01:10.867,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:01:12.355,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:01:12.361,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:01:29.375,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:01:29.380,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:01:30.869,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:01:30.875,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:01:59.887,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:01:59.893,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:02:01.381,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:02:01.387,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:02:30.399,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:02:30.405,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:02:31.894,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:02:31.899,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:03:00.911,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:03:00.917,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:03:02.406,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:03:02.412,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:03:31.424,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:03:31.430,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:04:45.771,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:04:45.777,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:05:15.790,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:05:15.795,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:05:17.284,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:05:17.290,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:05:46.302,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:05:46.308,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:05:47.797,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:05:47.802,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:06:16.814,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:06:16.820,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:06:18.309,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:06:18.315,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:06:47.327,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:06:47.333,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:08:01.675,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:08:01.680,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:08:31.692,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:08:31.698,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:08:33.187,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:08:33.193,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:09:02.205,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:09:02.211,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:09:03.699,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:09:03.705,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:09:32.717,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:09:32.723,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:09:34.212,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:09:34.218,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 2
+CREG: 2
[00:10:03.229,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 1,0000000000000000000000
OK
[00:10:03.235,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
+CEREG: 0
+CREG: 0
[00:11:17.567,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 2,0000000000000000000000
OK
[00:11:22.290,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+CREG: 2
+KSRAT: 2
OK
+CREG: 0
+CEREG: 2
+CREG: 0
[00:11:29.142,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 0,0000000000000000000000
OK
[00:11:29.148,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 0
OK
+CEREG: 0
+CREG: 0
[00:12:58.563,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 0,0000000000000000000000
OK
[00:12:58.569,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 0
OK
+CEREG: 2
+CREG: 0
[00:13:00.583,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 0,0000000000000000000000
OK
[00:13:00.589,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 0
OK
+CEREG: 0
+CREG: 0
[00:14:29.981,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 0,0000000000000000000000
OK
[00:14:29.987,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 0
OK
+CEREG: 2
+CREG: 0
[00:14:32.980,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KBND?]
+KBND: 0,0000000000000000000000
OK
[00:14:32.986,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 0
OK
[00:15:23.492,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+CFUN=4,0]
OK

Another problem seems to be that we have kbnd: 0 for all time.

2

Where did you see such assumption?

3

You’re right; I’m using someone else’s code, and I just checked. There is a 15-minute timeout, so if there is no connection within 15 minutes, the modem shuts down. That’s why I observed that pattern.

Anyway,

I’d like to understand this search pattern better. Why do I see 19 searches (CEREG: 2) followed by stops (CEREG: 0) when I only set 3 bands for NB-IoT? I can’t imagine how long it will take for the 13 bands I set for Cat-M if I let it search for it.

Additionally, is it possible to know which band is currently being searched? I couldnt see any information about it.

4

you can see if the command “AT+KNWSCANCFG?” and “AT+KSTATEV” help

5

Hi @JYIJYI, I need to know which band is being searched. Is that possible?

I have two SIM configurations, and if registration is denied on SIM 1, I’d like to switch to SIM 2 and continue searching using the same RAT and band where the registration was denied.

A registration denial typically means there’s a network signal, but either the provider doesn’t allow it, or there’s no agreement. I want to avoid searching through all bands and RATs again when switching to SIM 2.

7

you can combine AT+KBNDCFG and AT+SCAN for manual scanning

8

Can I use AT+KSTATEV <eventc> as a network signal indicator to detect if there’s any cell around the modem, even if the SIM provider has no agreement?

What I’m trying to achieve is this: if there’s no cell or RF network signal, then switching to SIM 2 would be pointless. Since there’s no signal at all, I want to avoid unnecessary searches and save power…

image
image694×534 41.1 KB

9

I think I wasn’t clear earlier — let me explain exactly what I’m trying to achieve with an example.

When switching to SIM 2, I don’t want to search through all the previously configured bands again.

Since the board is mobile and moves between different countries, here’s a scenario:
For SIM 1 on Cat-M, I’ve set bands 1, 2, 3, 4, 5, 8, 12, 20, and 66 using AT+KSELACQ=0,1,3,2, etc. After a long search on Cat-M, I get a registration denied.

What I need is to identify the exact band where the registration denial happened. In that case, I can switch to SIM 2 and search only on Cat-M for that specific band, rather than scanning all bands again.

So in this case, I need to know the band to use AT+KBNDCFG, am I wrong?

10

then you can set one band in AT+KBNDCFG and start the scanning, after that set another band and start the scanning, right?

11

then you can set one band in AT+KBNDCFG and start the scanning, after that set another band and start the scanning, right?

Yeah, that’s what I initially thought too. I think it would be easier if there were an indicator showing which band is being searched during the initial scan, rather than having to go through each band one by one.
Thanks for your help on this point.

Lastly, can you please help me with this: Incorrect Band Searching Configuration for NB-IoT and Cat-M Modes After configuring the PRL(AT+KSELACQ)) - #8 by zsen

12

Have you tried at+scan ?

It should show the frequency and PLMN ID

13

I checked this, but it’s really not a good option. First, this AT command is only available with the latest software — it’s not supported in HL7812.5.5.8.14, right? Also, according to the AT command guide, it can’t be used for 2G.

14

You cannot upgrade firmware?

For 2G, you might need to use at+cops=?

15

No, we don’t have an updated modem firmware at the moment, but for the next production, we plan to use the latest version. Right now, I’m just looking for a solution that works with the current modem firmware.

I noted your suggestion regarding AT+COPS=?, but I have a follow-up question about the AT+KSTATEV command.

I may be mistaken, but here’s what I’ve observed: when there is no cellular network signal around the board, the AT+KSTATEV URC message always follows this pattern:

+KSTATEV: 0,1  
+KSTATEV: 1,1  
+KSTATEV: 0,1  
+KSTATEV: 4,1  
+KSTATEV: 1,1  
+KSTATEV: 0,1  
+KSTATEV: 4,1  
+KSTATEV: 1,1  
+KSTATEV: 0,2  
+KSTATEV: 1,2  
+KSTATEV: 0,0  
+KSTATEV: 1,0  
+KSTATEV: 0,0  
+KSTATEV: 4,0  
+KSTATEV: 1,0  
+KSTATEV: 0,0  
+KSTATEV: 4,0  
+KSTATEV: 1,0  
+KSTATEV: 0,1

My assumption was that if there was any network signal present, it would report event 2 or similar. Could you confirm if this assumption is correct, or if I’m misunderstanding the meaning of these events? I’m not an expert on this topic, so any clarification would be helpful.

16

I saw there is example in the AT command guide
You can have a look there

17

[quote=“jyijyi, post:16, topic:34074, full:true”]
I saw there is example in the AT command guide
You can have a look there
[/quote].

Sorry, I didn’t quite get it. Is there something in the AT Command Guide regarding the use case of KSTATEV for signal detection that I missed? If you don’t mind, could you please share a screenshot or page number for reference?

18

You can see this page as example

image
image544×723 37.8 KB

19

I understand, but this doesn’t really clarify whether I can use it for my purpose or not. I already implemented and use this urc message to see rat during auto rat switching with AT+KSELACQ

20

didn’t the example show the case for network signal present?

21

That’s exactly what I’m asking—can I interpret eventc values (2 or higher) as a signal indicator? The documentation doesn’t provide any information on this.

So if I receive an eventc value of 2, does it imply that there’s at least some signal relevant to the RAT I set, regardless of whether a network connection is actually established?

image
image992×295 30.9 KB

So I couldnt get that information from the example.