MC7304 unable to connect to private 4G network

IoT Modules MC/EM Series
1

Dear all,
I have been trying to connect an MC7304 card to a private 4G network (APN: oai.ipv4), using qmi. Unfortunately I am not able to connect to the network. The card runs in a debian jessie distro, and the qmicli version used is 1.10. The network runs in band 7, which is supported by the module.
For example when running

sudo qmicli -d /dev/cdc-wdm0 --wds-start-network="apn=oai.ipv4"

I get

(the same stands for sudo qmi-network /dev/cdc-wdm0 start)
However, when I run

sudo qmicli -d /dev/cdc-wdm0 --nas-get-home-network

I get the right MNC/MCC:

Then, I tried to scan for all networks by running

sudo qmicli -d /dev/cdc-wdm0 --nas-network-scan

but strangely I only the see the public networks returned and not the 208/95 private network.
(By the way, the network is active and accessible since I am able to connect to it using either a smartphone or a USB dongle. )
Any ideas, directions to look at?
Cheers!

2

Try using AT commands first of all by sending the below.

ati
at!gstatus?
at+cpin?
at+cimi
at+creg?
at+cgreg?
at+cgdcont?
at+cgpaddr=1
at+cops?
at+cops=?

The above will at least tell you if you are attached to the network and able to start a session.

After this I can’t really help you as you are using qmilib.

Regards

Matt

3

Thanks for your comments Matt.
I struggled a little bit to get the output from the AT commands, because the connection to ttyUSB2 through minicom seemed to be quite unstable (that is why i preferred qmi).

Anyway, I don’t think I am registered to the network… The output was as follows:

ati
Manufacturer: Sierra Wireless, Incorporated
Model: MC7304
Revision: SWI9X15C_05.05.58.00 r27038 carmd-fwbuild1 2015/03/04 21:30:23
IMEI: 356853052673250
IMEI SV: 18
FSN: J3624200930410
+GCAP: +CGSM


at+cpin?
+CPIN: READY
OK

at+cimi
208950000000005

at+creg?
+CREG: 0,3

at+cgreg?
+CGREG: 0,2

at+cgdcont?
1,"IP","oai.ipv4","0.0.0.0",0,0

at+cgpaddr=1
1,0.0.0.0

at+cops?
0

at+cops=?
(nothing)

In the network side there is the possibility to see UE’s potential activity, and the strange thing is that nothing happens…

Anyway thanks for your help.