List of telephone switches


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

American Digital Switching

This lists Alcatel switches before the merger with [|Lucent Technologies].
started producing electromechanical switching systems in the 19th century.
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
List of the mainly electro mechanical switching systems from Hasler AG Bern, which were used in public telephone network in Switzerland for many decades. Hasler AG finally merged into Ascom in 1987.
The last HS 52 A and B exchanges were in operation until the end of 1997. The personnel-intensive electro mechanical systems were shut down prematurely then, due to the imminent opening of the telecoms market in Switzerland. The last AXE-10 local subscriber were migrated to VoIP in June 2020.

[Hitachi]

TDM/Digital switches

These are Mobile Telephone Switching Office Cellular switches
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 replacing the control, route selection and translation functions.
The DCO family starts as generic DCO
Note: DCO systems are now supported by GENBAND

[Tadiran Telecom]

Step-by-Step">Stepping switch">Step-by-Step

Panel">Panel switch">Panel

Space division