List of error code and their description?

When using Quectel Connection Manager (with RM520N-GL and Telekom SIM card) I receive messages like

[Time] requestSetupDataCall QMUXResult = a, QMUXError = b
[Time] call_end_reason is x
[Time] call_end_reason_type is y
[Time] call_end_reason_verbose is z

Real example:

[08-15_13:31:40:705] requestSetupDataCall QMUXResult = 0x1, QMUXError = 0xe
[08-15_13:31:40:705] call_end_reason is 10
[08-15_13:31:40:705] call_end_reason_type is 6
[08-15_13:31:40:706] call_end_reason_verbose is 29
...
[08-15_13:31:45:729] requestSetupDataCall QMUXResult = 0x1, QMUXError = 0xe
[08-15_13:31:45:730] call_end_reason is 1
[08-15_13:31:45:730] call_end_reason_type is 2
[08-15_13:31:45:731] call_end_reason_verbose is 211

Can you tell me, if there is a list of a/b and x/y/z? What is the meaning of each number?

Dear @capiman
We didn’t have the list. But you can get some explanation of call_end_reason_verbose in libqmi.