In the past, when you call an office building or business, you would either be transferred to the department you want to talk to, or given their extension number. This extension is usually a 2-3 digit code that when dialed, transfers you automatically to the particular person or department you want to speak with. The reason why this code works is because it is programmed into a PBX system.
Thanks to the high level experience of its managers and to the team of young and qualified engineers, CIT SA wants to place itself as a new reference in the world of innovative communications solutions providers.