refers to "miscellaneous other termination entities". MALTON22CG1 MALT = Malton ON = Ontario 22 = An individual switching station (3255 Derry Rd E, Mississauga) located midway between Toronto's city limits and the main airport CG1 = One of two electronic switches on the same site (both are actually digital Nortel DMS-100's) The city of Mississauga is a sprawling half-million person suburb directly west of Toronto. It is in Peel Region and therefore in a different local interconnection region, a different area code (905 instead of 416) and different, multiple rate centres (Clarkson, Streetsville, Cooksville, Malton, Port Credit; Bell Canada has no named "Mississauga" exchange despite the city's incorporation in 1973). This individual exchange, MALTON22CG1, serves multiple rate centres with different local calling areas for each. It is located 1800 metres west of the boundary between Toronto and Mississauga, serving a major international airport (in Mississauga) and that airport's hotel strip (directly across the town line, therefore in Toronto). Callers from Markham would be a local call to the hotels but long-distance to the airport itself, even though both destinations are served by the same physical Digital Multiplex System switch. 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. WFISON15RS0 WFIS = Wolfe Island ON = Ontario 15 = The +1-613-385 exchange (in this instance, the only local exchange). RS0 = An automated remote switching centre (RSC). This is an unattended, automated remote switch housed in a small, square windowless brick building on a side street in Marysville village. It serves about 1400 people on Wolfe and Simcoe Islands in the Thousand Islands. A Remote Switching Centre (RSC) has limited capability. It can operate autonomously to connect calls within the same exchange, but otherwise relies entirely on control via a single uplink to a host office (in this case, mainland Digital