Types of telephone exchanges
Over the years, the capacity of the telephone exchange has continued to grow. Fewer and fewer people were also needed for operation and maintenance. Photos above portray this development. In 1926, approximately 1 operator was needed to serve 100 customers. In 1960, 1 maintenance engineer was needed per 1000 customers to keep the power station running on site. In 2010, 1 remote maintenance technician per 100,000 customers was needed to keep the computer-controlled exchange (abroad) running.
Types of telephone exchanges – bicycle parking de Neude