 The decision to impose bandwidth caps on smaller independent ISPs caused controversy in 2011 when the Canadian Radio-television and Telecommunications Commission (CRTC), Canada's telecommunications regulator, approved a request by Bell Internet to begin, on March 1, 2011, to apply a bandwidth cap on the users of smaller independent ISPs who use Bell's last mile infrastructure.This new billing structure is called "usage-based billing" or UBB.Bell pushed for a cap as small as 25 gigabytes of transfer per month, plus a $1–2 CAD surcharge for every GB over the limit.