E392 connectivity issue with QMI

[david preetham]

Hi All,

I am trying to connect the E392 device using QMI on ubuntu.

Case 1:
using QMI wds start request, I am able to connect and able to acquire IP
address on wwan0 using dhclient.

Case 2:
I tried to analyze dongle behavior on windows operating systems using USB
analyzers.Its switching to different firmware since message content is
different.Using QMI CAT(card application toolkit) AT commands are
processing to network interface.

CONNECT REQUEST:
00000000  01 30 00 00 E0 01 00 68 00 00 00 24 00 41 54 5E  .0.....h...$.AT^
00000010  4E 44 49 53 44 55 50 3D 31 2C 31 2C 22 61 69 72  NDISDUP=1,1,"air
00000020  74 65 6C 67 70 72 73 2E 63 6F 6D 22 2C 2C 2C 32  telgprs.com",,,2
00000030  0D
DISCONNECT REQUEST:
00000000  01 1E 00 00 E0 01 00 87 00 00 00 12 00 41 54 5E  .............AT^
00000010  4E 44 49 53 44 55 50 3D 31 2C 30 2C 2C 2C 0D     NDISDUP=1,0,,,

In Ubuntu I able to switch to the firmware that is similar to windows
operating system by capturing message content
(55534243000000000000000000000011060000000100000000000000000000).
And able to connect by sending above connect request on cdc-wdm0.

But when i ran dhclient wwan0 i am not able to acquire IP address in ubuntu
system.

I am not getting where is the problem, I am able to switch similar firmware
as windows and also able successfully send connect request using QMI CAT
service.

 01 30 00 00 e0 02 00 01 00 00 00 24 00 41 54 5e 4e 44 49 53 44 55 50 3d 31
2c 31 2c 22 61 69 72 74 65 6c 67 70 72 73 2e 63 6f 6d 22 2c 2c 2c 30 0d
AGCatResponseThread =49
 01 30 00 80 e0 ff 04 00 00 00 00 24 00 41 54 5e 4e 44 49 53 44 55 50 3d 31
2c 31 2c 22 61 69 72 74 65 6c 67 70 72 73 2e 63 6f 6d 22 2c 2c 2c 30 0d

Regards,
David Preetham
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