Comment 2 for bug 1525392

I was given this modem and asked if I could make it work with Linux. I could hold it till next Thursday, after which getting it back for testing could become more difficult. I also tested it with Debian 8.2, also without success (but with different behaviour, at least it was able to initialize & enable modem, and it showed 'InterTelecom' in NM main menu, but then it enters the loop trying to connect to InterTelecom and failing). I will try to collect package versions and logs from Debian.
On the Internet I see some recipes, like 'blacklist some modules', 'force options for some modules', 'downgrade modemmanager package' or the like. But I am unsure what to start from.