This CLLI code identifies a wire centre (the location of the switch) only. A similar exchange on the other side of the town line (such as TOROON29DS0, located 900 metres east of Toronto's western city limits at 40 Old Burnhamthorpe Road, Etobicoke and serving multiple rate centres) would be issued a Toronto CLLI to reflect the location of the switch itself, but follow the same pattern of a more restrictive calling area for individual subscribers outside city limits. Wire centre CLLI codes therefore do not suffice to identify a rate centre or V/H co-ordinates for toll billing; any +1-416 numbers are billed as if they were in downtown Toronto.