At commands in Rut956 do not function

Hello Teltonika,

I have a Rut956 with last firmware on novembre 2023.

I send At command by serial RS232 from my old server to send SMS using modem controle.

BUT, I have sometime that SMS no start because my system receice from RUT956 a bad response, like " or NoService. So I connect Hyperterminal by COM on my PC and I see that from Rut956 arrive every 2 seconds ^HCSQ “NOSERVICE”, also others frames like MODE, ETC…

Can you tell me how I can set router that it not send this message and it remain stopped to lissen?

Many Thanks
Regard
Corrado

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