You can if you have an unlocked Huawei HG612 modem (and a few others).
It's very easy to unlock a HG612 and spare ones can be purchased at low cost (some already unlocked) via that e-auction site.
You can then use telnet for the stats or use a logging/graphing program such as
HG612 Modem Stats which can be obtained free of charge from here:-
http://www.freewarefiles.com/HG612-Modem-Stats_program_84567.html [Moderator's note by Jim (Oldjim): Full quote of preceding post removed, as per Forum Rule]
