Vendor lineage
Siemens - the 1847 telegraph startup
Werner von Siemens built the Indo-European telegraph line; the conglomerate's communications bloodline runs through EWSD, the Nokia JV, and Unify.
Siemens is the oldest company in this section by decades: an 1847 Berlin workshop whose pointer telegraph grew into a global electrical empire. Its communications lineage - telephone exchanges, the EWSD switch, Nokia Siemens Networks, and the Unify enterprise-communications line - threads through half the industry's history, while today's Siemens leads industrial automation and its networking.
The profile follows the telegraph century, the telecom exits, and where the communications bloodlines ended up.
Founding stories
Siemens (Telegraphen-Bauanstalt von Siemens & Halske)
The oldest company in this section began as a telegraph startup: Werner von Siemens's pointer telegraph, built with the craftsman Johann Georg Halske in a Berlin backyard workshop in 1847. Within a generation it had strung the Indo-European telegraph line from London to Calcutta and discovered the dynamo-electric principle that made electrical engineering an industry. Siemens spent the twentieth century as Europe's electrical everything-company - and its communications bloodlines thread through half the other pages here before the company chose its modern identity: the automation of industry itself.
The timeline
- The pointer telegraph
Siemens and Halske found their Telegraphen-Bauanstalt in Berlin; the 1870 London-to-Calcutta Indo-European line - messages in minutes instead of weeks - makes the young company a global infrastructure builder.
- The dynamo
Werner von Siemens articulates the dynamo-electric principle - practical electricity generation - and the telegraph company becomes the seed of an electrical empire: power, rail, lighting, medicine.
- EWSD wires the world
The digital public exchange from Munich becomes one of the most widely deployed switching systems ever - Siemens as a first-rank telecom vendor through the fixed-line era.
- The communications retreat begins
The mobile-phone business goes to BenQ; in 2007 the carrier-networks business merges into the Nokia Siemens Networks joint venture, which Siemens exits fully in 2013 - the telecom century wound down deliberately.
- Unify departs
The enterprise-communications lineage - Siemens Enterprise Communications, renamed Unify - is sold to Atos, and passes to Mitel in 2023: the last communications bloodline leaves the house.
- The focused giant
With Siemens Energy spun off (Healthineers already public), the company completes its transformation: industrial automation, smart infrastructure, and rail - including the SCALANCE and PROFINET industrial-networking world where factory floors meet this site's subject matter.
Flagship products and solutions
- Digital IndustriesFactory automation and industrial software: SIMATIC PLCs, TIA Portal, and the Xcelerator platform.
- SCALANCE and industrial networkingSwitches, wireless, and security for the OT world - PROFINET's home turf, where networking meets the plant floor.
- Smart Infrastructure and MobilityGrid technology, buildings, and rail - the electrical-empire heritage, modernized.
Key innovations
- Electrical engineering as an industryThe dynamo-electric principle and the infrastructure ventures built on it - Siemens did not join the electrical age; it is one of the reasons the age happened.
- The disciplined exitFew giants have left a flagship industry as deliberately as Siemens left telecom - a decade-long unwinding that funded the automation identity it wears today.
Main markets
Siemens today leads industrial automation and infrastructure worldwide - and its OT-networking lines make it a neighbor of this site's world wherever a factory network meets an enterprise one.
Analyst standing
- A century-long fixture of the electrical and automation evaluations; in telecom history, the quiet co-author of the fixed-line era whose exits shaped Nokia's rise.