Problem with the voice call

Legacy Legacy AirPrime modules
1

Hello.

I use GSM-module WISMO228. I can call, send and receive SMS. But there is problem with several SIM-cards.

  1. Periodically I send AT-command^
AT+CREG?
+CREG: 1,1
OK

AT+CREG?
+CREG: 1,1
OK

And this is working OK.

  1. Then I’m trying to make voice call: (instead of x there is real numbers)
ATD+7916хххххх;

  1. Then I’m waiting answer, but the module is silent.

  2. Then I send command from paragraph 1:

AT+CREG?
ERROR
ERROR
ERROR

That is module answer ERROR for each command.
There is only one way to exit from this state, this is reset the module.

How can I make the voice call, if AT-command ATD not working?
How can I detect this type of SIM-card?

Thank you.

2

Hi,

What error code is coming?

You can enable error code using AT+CMEE=1

Thanks

3

Hi,

Topic moved to the correct section.

4

Error code is already enabled. There isn’t any code.
By the way, module send ERROR after any AT-command until reset it.

5

I connect to module with Sierra Wireless Discovery Tool and tried to make voice call.
The situation repeated itself.

6

Hi.
The problem was solved by updating firmware from version L20 to version L23.

7

Hi Man, You will have to share the L23a firmware and the process of how to update it, thanks