BG95-M3 not accept APN

Rafal_P · February 16, 2023, 8:39pm

Hi

I’ve been working for two days to connect ESP32 using a BG95-M3 modem and a monogoto sim card and today the modem stopped accepting the APN command
AT+CGDCONT=1,“IP”,“data.mono”
ERROR

but this one works AT+CGDCONT=1,“IP”,“mono”
OK

Below is the log from the modem
ATI
Quectel
BG95-M3
Revision: BG95M3LAR02A03OK
AT+GSN
869616064576336OK
AT+CPIN?
+CPIN: READYOK
AT+COPS?
+COPS: 0,0,“vodafone ES”,8OK
AT+QNWINFO
+QNWINFO: “eMTC”,“21401”,“LTE BAND 20”,6300OK
AT+QNWINFO
+QNWINFO: “eMTC”,“21401”,“LTE BAND 20”,6300OK
AT+QNWINFO
+QNWINFO: “eMTC”,“21401”,“LTE BAND 20”,6300OK
AT+QCSQ
+QCSQ: “eMTC”,-69,-99,83,-16OK
AT+CGDCONT=1,“IP”,“data.mono”
ERROR
AT+CGDCONT=1,“IP”,“mono”
OK
AT+CGDCONT=1,“IP”,“data.mono”
ERROR

Firmware version:
BG95M3LAR02A03_01.017.01.017

I tried AT+QPRTPARA=1 and AT+QPRTPARA=3 but I still have APN error

What can this error be related to, yesterday the modem accepted this command ?

tabor.tang-Q · February 17, 2023, 1:27am

Hi
According to the query result of AT+QCSQ instruction, the SINR of your current network is very poor. Is your test network environment yesterday the same as today? In addition, AT+CEREG? What is the result of the command?
BR
Tabor

snowgum · February 17, 2023, 2:50am

Check that the quotation marks used throughout your command are ASCII (character 34 decimal) and not unicode.

If you’ve done a copy-and-paste of the APN with quotes at some point, it’s easy for the copied quotation marks to end up incorrect.

They’re always incorrect when copying from posts on this forum, unless they were posted as “Preformatted text”.

Like this: AT+CGDCONT=1,"IP","data.mono"

Rafal_P · February 17, 2023, 7:55am

Yesterday modem connect to GSM not LTE network

But why one command is OK and another hive Error ?
AT+CGDCONT=1,“IP”,“mono”
OK
AT+CGDCONT=1,“IP”,“data.mono”
ERROR

How I can restart modem to default use AT+QPRTPARA=3 ?

tabor.tang-Q · February 17, 2023, 9:26am

If you want to restart the modem, run AT+CFUN=0 and then AT+CFUN=1

tabor.tang-Q · February 17, 2023, 9:38am

You can do AT+QIACT, right? Query whether data.mono is activated.

Rafal_P · February 18, 2023, 12:09pm

today I updated modem to new FW but still I can’t command
AT+CGDCONT=1,“IP”,“data.mono”
return ERROR

I tried diferent SIM card with APN internet and after few sending command AT+CGDCONT=1,“IP”,“internet” where respond was OK I also now have ERROR message when I send AT+CGDCONT=1,“IP”,“internet”

I think modem add APN data.mono and internet to some ban list.
How I can check it or clear this list ?
Command AT+QPRTPARA=3 not help

snowgum · February 18, 2023, 10:49pm

Here’s some AT commands for you to try:

AT+CGDCONT=2,“IP”,“data.mono”

and this sequence:

AT+CFUN=0
AT+CGDCONT=1,“IP”,“data.mono”
AT+CFUN=1

Rafal_P · February 19, 2023, 8:36am

Same problem
AT+CGDCONT=1,“IP”,“data.mono”
ERROR

How I can chec what APN is set to BG95 ?

snowgum · February 19, 2023, 9:05pm

What happened when you tried setting data.mono as the APN for context 2?

Rafal_P · February 22, 2023, 9:55am

O found why I recived error

Modem already have this APN in config

With of them will by used when I use ppp connection and ATD*99# command ?
Or how I can delete them from configuration ?

snowgum · February 22, 2023, 8:22pm

Context 1 is used by default.

ATD*99# is equivalent to specifying context 1 explicitly like this: ATD*99***1#

To use context 3 you want ATD*99***3#

Rafal_P · February 22, 2023, 10:07pm

how I can delete this entries and set from begining ?

snowgum · February 23, 2023, 1:36am

To remove contexts 1 through 4:

AT+CGDCONT=1
AT+CGDCONT=2
AT+CGDCONT=3
AT+CGDCONT=4