… without telling them. This has apparently been confirmed on DSL Reports forums, and Bell’s justification is that this is part of their TOS.
Bell Canada Throttles Wholesalers, Doesn’t Bother To Tell Them – dslreports.com
Users of the Canadian family-run ISP Teksavvy have started noticing that Bell Canada is throttling traffic before it reaches wholesale partners. According to Teksavvy CEO Rocky Gaudrault, Bell has implemented “load balancing” to “manage bandwidth demand” during peak congestion times — but apparently didn’t feel the need to inform partner ISPs or customers. The result is a bevy of annoyed customers and carriers across the great white north.