EG915UEUABR02A04M08
When receiving an incoming SMS, the URC “+CMTI” does not arrive at the CMUX port.
I get the message “+CMTI: “SM”,0” not via the hdlc protocol (without “0xF9” it’s as if I’m not using CMUX)
I use these settings:
AT+CMGF=0
AT+CNMI=2.1
AT+CPMS=“SM”,“SM”,“SM”
AT+QURCCFG=“urcport”,“uart1”
AT+QCFG=“cmux/urcport”,2
AT+QCFG=“urc/cache”,0
AT+QCFG=“cmux/urcport”,2
It means that the URC can be in the second virtual port.
I think you can set it to 0
AT+QCFG=“cmux/urcport”,0
That means all the virtual CMUX port can recieve the URC.
AT+QCFG=“cmux/urcport”,0 does not change behavior
in the current configuration, CMUX ch1 is used for PPPoS connection. URCs are not welcome there.
I’ll check later whether PPP affects the URC +CMTI:… I saw something similar before on BG77
The picture shows what I tested with EG915U. And I ddn’t find anything wrong.
What is your firmware version? Perhaps this is the reason?
I have EG915UEUABR02A04M08
if there is a newer one, please give it.
@Bean.Wang-Q sent me the firmware EG915UEUABR02A08M08_01.001.01.001.zip but I can’t run the firmware.
I am flashing via USB, the USB_BOOT pin is pullup. In Windows10, USB COM is detected, but firmware cannot be flashed through it.
Most likely the problem is in the driver. I tried different versions of QFlash. Is it possible to send me instructions for the firmware and the necessary drivers and QFlash?
In addition, I noticed that incoming voice calls on the LTE network do not work. I also really hope that the problem is in the old firmware version.
Below you can see that the URC RING also does not go to CMUX:
You can the other URC?
Only the SMS urc cannot be received?
what is the current firmware version?
EG915UEUABR02A04M08
URC RING, CMTI, CLIP are not in CMUX.
in addition, +CLIP should be after each +RING, but in fact it comes only once
Firmware EG915UEUABR03A01M08 helped.
The URC anomalies have completely disappeared.
Thanks to Ukrainian FAE for professional support 