Quectel EC21-e and 4G VoLTE calls in Norway?

IoT Modules LTE Standard Module
22

Unit1:
AT+QGMR
EC21EFAR06A01M4G_OCPU

Unit2:
AT+QGMR
EC21EFAR06A05M4G_OCPU_20.001.20.001

23

I get: on both units
AT+QCFG=“IMS”
+QCFG: “ims”,1,0
--------------------^—
I guess this means 1 and its ok.

However…
the commands you recomended gives me:
AT+QCFG=“IMS”
+QCFG: “ims”,1,1
--------------------^–^
and this means?

AT+CGDCONT?
+CGDCONT: 1,“IP”,“GPRS.SWISSCOM.CH”,“0.0.0.0”,0,0,0,0
+CGDCONT: 2,“IPV4V6”,“telenor”,“0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0”,0,0,0,0

So I do the test again:

  1. AT+QCFG=“IMS”
    +QCFG: “ims”,1,1

  2. call out and in.
    No calls

  3. AT+QCFG=“IMS”
    +QCFG: “ims”,1,0

I can see that IMS is 1,1 but after trying to call it goes back to 1,0

24

correction:

The IMS stays 1,1 for aprox 1 min then goes back to 1,0

25

Hi @EnterSecurity
Have you tried this method yet?

26

Hi @lyman-Q

Yes, that is what we did now.

the IMS stays 1,1 for aprox 1 min then is goes back to 1,0
It is not possible to call inn/out :slight_smile:

Any ways to debug more?

Edward

27

Hi @EnterSecurity
I see that the firmware you use was completed in 2018, I have sent you the latest firmware version, can you upgrade to the latest firmware to try?
It should be noted that the latest version has the anti-rollback function, and it cannot be downgraded to the old version after the upgrade.
If not, you may need to grab the module log for further analysis.

28

Hi, yes we can try.

can you also send Qflash Tool: QFlash_V6.8 or latest ?

Edward

29

Hi,
I have not been able to install the latest modem driver, but we got some updates from the producer.

at+call=+479xxxxxxxx
OK
27/02/24,09:32:39,CALL TO +479xxxxxxxx:NOT FORWARDED IN 1

AT+QCFG=“ims”
+QCFG: “ims”,1,1

What can “NOT FORWARDED” means?