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by anonymous

Hello,

I have a TRM250 Modem, and installed it successfully.

My issue: I cannot send USSD command  including "#" special character. When trying, terminal change '#" character with "#013".

For example if I send AT+CUSD=1,*155# command the string is replaced with AT+CUSD=1,*155#013 on execution terminal and I doesn't have any response from modem.

Please  see the screenshot in attached file.

Please need help to send USSD command on  modem.

Regards.

1 Answer

0 votes
by anonymous

Hello,

Thank you for contacting. 

From Quectel forums:

BG96 cannot support USSD.

The reason is that USSD uses 2G CS (Circuit Switched),but the BG96 has no CS domain, only PS (Packet Switch) domain.

Thanks.

Best answer
by anonymous
Hello,

Thanks a lot for your help. I saved a lot of time of troubleshooting.

Thanks.