Default CM10: DC or 3G. No H+ ?

I am on Bell.
I installed CM10 stable and it shows either 3G or DC( DCHSPAP in status). It keep switching between the two.
What does it mean? Is it the HSPA +? On stock ROM it always showed H+.
Also, I cannot run speedtest, it starts the test but then says "network communications issues". It works on Wifi.

Thanks