Siemens EWSD » History » Revision 2
Revision 1 (laforge, 08/27/2023 10:17 AM) → Revision 2/5 (laforge, 08/27/2023 10:18 AM)
h1. Siemens EWSD
Siemens EWSD (Elektronisches Wählsystem Digital) was a family of digital telephone switch (exchange) which was used by more than 300 telephone operators in more than 100 countries world-wide, serving more than 170 million subscriber lines in 1998.
According to Siemens, there were more than 1600 engineers involved in EWSD software development in Munich alone, creating more than 45 million lines of code.
EWSD was not only used for analog and ISDN telephony, but also as FuVSt (radio exchange) for the German C-Netz analog cellphone system, as well as as MSC (Mobile Switching Centre) for digital GSM cellular networks.
