Hi,
I have CHINA TELECOM and CHINA UNICOM sim card. When I test with bg77, I can’t join to NBIOT. Below is my log, After set to NB search mode, AT+COPS=? will never return any response over 1 min. What is the problem?
[10:30:23.097]收←◆
RDY
AT+QCFG=“nwscanseq”,03
OK
[10:30:25.148]收←◆
APP RDY
AT+QCFG=“iotopmode”,1
OK
[10:30:27.199]收←◆AT+QCFG=“band”,F,2000095,2000095
OK
[10:31:27.786]收←◆AT+COPS=?
And if join ok, can I use AT+QPING=1,“www.baidu.com” directly? Or need any other set?
Hi nero
Please refer to the following configuration.
AT+QCFG=“NWSCANSEQ”,03,1 // config to search NB network first
AT+QCFG=“nwscanmode”,3,1 //LTE ONLY
AT+QCFG=“iotopmode”,1,1 //LTE Cat.NB1 only
AT+CFUN=0
AT+CFUN=1
For the AT+COPS=?,the module will search for available networks around and looks like “blocked” until the search is completed.
Note: It will clear the previous network configuration, such as AT+COPS=? and AT + COPS = XX but AT + COPS? will not be.
B&R
Hi,
I use china mobile NB card, below is log, any advise?
11:13:14.352 -> BG77 power up!
11:13:14.866 ->
11:13:17.347 ->
11:13:17.347 -> RDY
11:13:17.347 -> AT+QCFG=“nwscanseq”,03,1
11:13:17.347 -> OK
11:13:17.347 ->
11:13:19.862 ->
11:13:19.862 -> APP RDY
11:13:19.862 -> AT+QCFG=“nwscanmode”,3,1
11:13:19.862 -> ERROR
11:13:19.862 ->
11:13:22.367 -> AT+QCFG=“iotopmode”,1,1
11:13:22.367 -> OK
11:13:22.367 ->
11:13:24.841 -> AT+CFUN=0
11:13:24.841 -> OK
11:13:24.841 ->
11:13:27.352 -> AT+CFUN=1
11:13:27.352 -> OK
11:13:27.352 ->
11:13:29.867 -> AT+CPIN?
11:13:29.867 -> +CPIN: READY
11:13:29.867 ->
11:13:29.867 -> OK
11:13:29.867 ->
11:13:32.344 -> AT+QNWINFO
11:13:32.344 -> +QNWINFO: No Service
11:13:32.344 ->
11:13:32.344 -> OK
11:13:32.344 ->
11:13:34.851 -> AT+QCSQ
11:13:34.851 -> +QCSQ: “NOSERVICE”
11:13:34.851 ->
11:13:34.851 -> OK
11:13:34.851 ->
11:13:37.353 -> AT+CSQ
11:13:37.353 -> +CSQ: 99,99
11:13:37.353 ->
11:13:37.353 -> OK
11:13:37.353 ->
11:13:42.304 -> AT+QIACT=1
11:13:42.304 -> ERROR
11:13:42.304 ->
11:13:44.305 -> Begin receive packet from w w w.baidu.com!
11:13:54.058 -> AT+QPING=1,“w w w.baidu.com”
11:13:54.058 -> OK
11:13:54.058 ->
11:13:54.058 -> +QPING: 561
Hi nero
I noticed that the AT+CSQ returns 99,99.
It means your antenna is not properly connected or no signal around，please check.