Extension (telephone)

As extensions, the phone connections of the individual employee are telephone systems in companies, offices etc. However, or telephones in each room. Under Mobile Extension refers to the integration of mobile phones in a telecommunications system as full extension.

They are accessed via direct dial phone number, or mediated by the attendant. Participants at extensions have an extension number ( extension number), in extension of the outside an extension number.

In Austria, denotes an extension or the extension as a flap.

A coupled to a second telephone connection phone line, however, will not have their own designated phone number Minor port.

An extension is for larger companies - especially in the commercial and savings banks - even a local or specialized technical office. More commonly it is called branch or branch office.