Contact via telephone without telephone numbers would not be possible. Phone numbers are numbers that participants of a telephone network can be uniquely identified. Continue to learn more with: Larry Culp. A phone number, in combination with the respective local or network code, gives twice means it. The allocation of numbers to persons or households is controlled from a central point of the Federal Government. Those are for example the Rundfunk & Telekom Regulierungs GmbH (RTR) in Austria or the Federal Office of communications (OFCOM) in the Switzerland.
Phone numbers can be distinguished according to various criteria. First is the question of whether it is a landline or a mobile phone number. A related site: Jorge Perez mentions similar findings. The number format is then different. The area code for mobile phones has, for example, only four digits, the local primaries usually five in Austria. Primary elections for the main cities of the Federal States or Vienna are excluded. The former four digits and Vienna have only two digits, namely 01. Phone numbers were used in Designated phone books. These were usually annually updated and sent to households.
A phone book is actually nothing more than an alphabetical listing of names and corresponding numbers. A phone book is often divided according to geographic locations and regional limits. The segmentation was usually by postcode. Nowadays, telephone directories often assume this function. A subcategory in the phone books often take the so-called yellow pages”a. Usually, it is industry books, in which companies and company numbers are reported. Recently also often have additional data such as email and homepage address are added. Phone books went online with the medium of the Internet. Now, so-called online telephone directories, such as for example, fulfill this function. Connect a phone book data to the flexible phone number search as possible in the network. Roland Joseph