I'm having the same problem, and I'm pretty stumped. A few weeks ago when I first started looking for help I couldn't find too many others with the same problem, and now the threads are popping up everywhere.
So far the ONLY solution I've seen to this problem is swapping the Modem for a non-Alcatel, but since bell doesn't use anything else, we're kinda stuck.
Sorry I don't have any suggestions at this point that might actually work, but I'll let you know if anything turns up in my own personal struggle.
Bobiloco