List of telephone switches

This list of telephone switches is a compilation of telephone switches used in the public switched telephone network (PSTN) or in large enterprises.

See also Lucent

DSC merged with Alcatel-Lucent

The TDX switch was a joint project with Korea Telecom and four manufacturers, LG Electronics, Samsung Telecommunications, Daewoo Telecom and Hanwha Telecom.

GEC later became Marconi (Britain)

(Later Bosch Telecom)

These are Mobile Telephone Switching Office Cellular switches

(CX evolved from the "Automanual" system designed by Edward Clements "Clement eXchange" or "Community eXchange")

The McBerty design used an early "wire spring relay" and welded piano wire interconnections rather than complex wire multiples. The system never achieved the reputation of the CX product due to problems with poor contact pressure in the interconnection relays. Despite its much lower cost of production and installation, the level of maintenance required to keep these systems on good order doomed this variation of the CX design.

This later was renamed the ITT 1210 product upon purchase of North electric by ITT.

L.M. Ericsson purchased North Electric in the early 1950s and brought this Swedish design to North where it was reworked to conform to U.S. telecommunications requirements.

The NX-1E was not a SPC switch, rather it was a conventional path controlled switching matrix with electronic processors (computers) replacing the control, route selection and translation (directory number to line ID) functions.

The DCO family starts as generic DCO

Note: DCO systems are now supported by GENBAND

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