Marconi has on several occasions in recent times implied that they have been at the the old Strowger Works in Edge Lane since 1912 and made the old Strowger System
By 1912 a new company, the Automatic Telephone Manufacturing Company, was set up at the site to manufacture automatic telephone exchanges using the Strowger system
, which was quickly established as the UK exchange standard by the Post Office.
``This is in sharp contrast with our existing System X exchanges, which require equipment the size of a tennis court to handle 50, 000 subscribers, and the old Strowger system
, which needed an exchange the size of a football pitch.