Wikipedia: History of Telephone switch

Difference (from prior major revision) (author diff)

Changed: 1c1

A telephone switch (or in the UK, telephone exchange) is a device for routing calls from one telephone to another, generally as part of the [Public Switched Telephone Network]?). Usually a complex machine (or series of them) in a central exchange. They work by connecting two or more circuits together, each circuit being connected to a subscriber telephone, according to a dialed telephone number.

A telephone switch (or in the UK, telephone exchange) is a device for routing calls from one telephone to another, generally as part of the public switched telephone network). Usually a complex machine (or series of them) in a central exchange. They work by connecting two or more circuits together, each circuit being connected to a subscriber telephone, according to a dialed telephone number.

Added: 7a8,12

	Revision 6 . . December 10, 2001 2:39 am by The Anome [fixed PSTN link, added see alsos]
	Revision 5 . . December 10, 2001 2:38 am by The Anome [added UK name, linked 'telco', mentioned the PSTN]
	Revision 4 . . December 10, 2001 2:18 am by (logged).203.27.xxx *[In modern telephone switches information is handle in the form of time slots]**
	Revision 3 . . September 26, 2001 5:09 pm by Drj [Introduced more context, made slightly more general.]