Sierra EM7455 broadband modem does not receive data

Latest response

Sierra EM7455 built-in usb modem on Lenovo ThinkPad T470 does not work.
Modem is recognized by the system and it can also connect to the network, but there is no data exchange.
RHEL 7.3 operating system is updated via yum.
Modem works fine with Fedora 26 on the same machine.

I am attaching the output of ModemManager --debug.

Thanks for any suggestion.

Attachments

PK

Responses