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Line 2: Vertical service codes are often colloquially referred to as "Star" codes, or as "CLASS" codes after the AT&T trademark for the original implementation of these codes, known as "Custom Local Area Signalling Service". ~~==List of vertical service codes==~~ The following are the VSCs generally used in the [[North American Numbering Plan]]. Not all of these services are available in all areas, and some are only available to [[landline]] or [[cellular]] telephones. Some require additional services be purchased from the [[telephone company]] to use them. '''00''' ''English'', '''*01''' ''French'' - '''Inward Voice Activated Services''' (IVAS) enables a subscribing business to provide automated voice activated routing for inbound English or French speaking calls (i.e., separate codes for the same service in each language). IVAS will initially consist of the following services:

Vertical service code: Difference between revisions