M66 network registration

Technical Subjects
1

Hi,

Hope you all doing great !

I am using M66 modem with ST microcontroller and I found a cellular stack in ST website which is desinged to talk with BG96. I did modifications in this stack to use it with M66. I am facing issues now with the network registration. I fail at AT+QICSGP. Below are debug output of my project. Could anyone please let me know where exactly I am going wrong.

*********** CST_init_state_mngt ********
CustClt: Wait for application code
SysCtrl_M66:Waiting 5500 millisec for modem running…
SysCtrl_M66:…done
ATParser:*** SEND (size=11) ***
AT+IFC=0,0
AT+IFC=0,0
OK
ATParser:*** SEND (size=3) ***
AT
AT
OK
M66:modem synchro established, proceed to normal power sequence
ATParser:*** SEND (size=5) ***
ATE0
ATE0
OK
ATParser:*** SEND (size=10) ***
AT+CMEE=2

OK
ATParser:*** SEND (size=5) ***
ATV1

OK
ATParser:*** SEND (size=6) ***
AT&D0

OK
ATParser:*** SEND (size=8) ***
AT+CGMR

Revision: M66FAR01A12BT

OK
ATParser:*** SEND (size=12) ***
AT+CFUN=0,0

+CPIN: NOT READY

OK
M66:>>>>> M66 mode and bands configuration <<<<<
M66:>>>>> … <<<<<
*********** CST_modem_sim_init ********
SysCtrl_M66:MODEM SIM SOCKET SELECTED
CST_modem_sim_init : check SIM First
ATParser:*** SEND (size=12) ***
AT+CFUN=4,0

OK
ATParser:*** SEND (size=9) ***
AT+QCCID

+CPIN: SIM PIN

89490200001242420845

OK
ATParser:*** SEND (size=12) ***
AT+QINISTAT

+QINISTAT: 1
M66:Modem SIM is ready

OK
M66:SIM is ready, unlock sequence
ATParser:*** SEND (size=9) ***
AT+CPIN?

+CPIN: SIM PIN

OK
M66:CPIN required, we send user value to modem
ATParser:*** SEND (size=15) ***
AT+CPIN=“8563”

+CPIN: READY

OK
ATParser:*** SEND (size=12) ***
AT+CGDCONT?

ERROR
ATParser:*** SEND (size=8) ***
AT+CIMI

262011208041748

OK
-IMSI: 26201128041748
-MMC/MNC: 26201
-Found corresponding APN: “internet.telekom” in table
CST_modem_sim_init : CST_modem_define_pdn with APN: “internet.telekom”
ATParser:*** SEND (size=13) ***
AT+QIFGCNT=0

OK
ATParser:*** SEND (size=49) ***
AT+QICSGP=1,“internet.telekom”,“t-mobile”,“tm”,0
CustClt: Wait for application code

ERROR
ATCore ERROR:AT_sendcmd error
ATCore ERROR:AT_sendcmd error: parse from rsp
LOG ERROR #4: channel=2 / errorId=11 / gravity=2
LOG ERROR #5: channel=2 / errorId=14 / gravity=2
CS ERROR:<Cellular_Service> error when defining PDN 1
=== CST_modem_define_pdn Fail !!! ===

Best Regards,
Ankush

2

Hi,
image
If you configure the first parameter as 1, then the last parameter can’t be entered.
So you can excute like this:
AT+QICSGP=1,“internet.telekom”,“t-mobile”,“tm”

I hope my reply will be useful to you.

3

I tried this way. Same error. ;(

4

Hi,
I noticed that the double quotation marks in the command you executed are all in Chinese:
AT+CPIN=“8563” / AT+QICSGP=1,“internet.telekom”,“t-mobile”,“tm”.
Please make sure that the double quotation marks in the command are in English.

5

Hi, I found out the problem. I was trying to establish TCP/IP connection before the registering to network. executing AT+CREG before TCP/IP solved my problem :wink:

6

Hi Ankush:
I’m glad to hear that your problem has been solved. :slightly_smiling_face:
Before establishing a TCP connection, you need to ensure that the PS domain register network is successful.(excute AT+CGREG? to check)
Wish you all the best.