1000 E10 / S12 (during the 1990s the E10 and S12 systems were converted into a single product line)
E10 versions:
E10A (E10N3)- Original switch introduced in 1972 one of the earliest deployments of TDM switching in the world.
E10B (E10N1)- Major revision in the 1980s which eventually saw ISDN capabilities. Common in France, Ireland, China, India and elsewhere.
E10B3 - major revision in the 1990s. Common in France & Ireland
OCB-283 - Another name for more modern versions of E10B and often the name used in India to distinguish it from older versions.
E10-MT formerly Thomson MT-25 found mostly in France, and MT20 too.
E10-Five E10B adapted for the North American environment as a class-5 switch.
E10S satellite switching unit.
E10-MSC mobile switching center for GSM and other protocols.
1000 (MM) E10 - Evolved switch for multimedia / broadband and IP network environments. Provides POTS/ISDN and next generation services.
S12 - Formerly known as "System 12" or the ITT 1240 or acquired by Alcatel when it purchased ITT's assets in Europe. This is a very widely deployed switching system found in Italy, Germany, Belgium, Australia and many other countries around the world. There are a large number of versions of this type of switch ranging from local, to transit to international gateway to mobile switching centers. The line was converted with the E10 family of exchanges.
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.
HS 25 (modified from the Ericsson OL-100 system with double relays and 25-point selector (Ericsson license), mainly used for small villages and towns in the counties)
HS 31 (new developed register system, introduced in 1931, based on a new flat type relay and a 100-point two-motion selector, suitable for small and large exchanges)
HS 52 (new developed register system, introduced in 1953, based on a new 120-point selector, which was in fact a 4 x 30-point uniselector with 2 x 4 brushes offset by 180°, no zero position)
HS 52 A (new variant of HS 52 from 1973 with an almost full-electronic register evaluation unit called 'Umrechner', not processor based but centralized programmable by diode matrices)
HS 52 B (Processor controlled multiregister system with identifier, but the relay and selector based coupling stage was maintained from the original HS 52 system)
HS 68 (prototype of a semi-electronic switching system, based on adhesive reed-relays in the coupling stage. One sample system built but not pursued because of the arising PTT IFS-project)
AXE-10 (digital switching system from Ericsson, initially built and adapted for the Swiss market by Ascom Hasler under Ericsson license)
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.
iMSS (Italtel Multi Service Solution), a.k.a. i-SSW
i-VLS (Italtel Virtual Lite Switch)
i-MCS (Italtel Multimedia Communications Suite) - NGN Class 4 and Class 5 SoftSwitch + IMS Core + TAS for delivery of POTS/ISDN/SIP services over legacy and IP Broadband access type networks
i-RPS (Italtel Routing Policy Server) - Centralized Routing Platform for IP Convergent Networks
ITECedit
EMS-1 (The ITEC Electronic Modular Switch is an electronic direct control switching system. The modules are combined to form a complete switch or any of the modules can be added to your present Step-by-Step Systems.)
EMS-2 (The EMS-2 RURAL SWITCH is a stored program control analog switch designed to be cost-effective in small exchanges. The modular design with connectorized cabling permits fast initial installation and growth. The system requires minimum maintenance and is particularly suitable for unattended exchanges. The EMS-2 distributed control design prevents total switch failure which could isolate a remote community.)
(CX evolved from the "Automanual" system designed by Edward Clements: "Clement eXchange" or "Community eXchange")
CX30 (30 line)
CX60 (60 line)
CX100 (100 line)
CX200 ("broadspan" up to 200 lines)
CX1000 (large CX expandable to 10,000 lines)
MCX A version of the CX product line designed by F.R. McBerty after leaving Western Electric/Bell Labs and becoming President of North Electric.
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.
DSS1 (North's first digital switch for local exchanges)
This later was renamed the ITT 1210 product upon purchase of North electric by ITT.
DSS2
ETS4 (Large #4A-ETS class toll switch based on Ericsson "code switch")
NTS4E (4-wire toll switch with Xbar switches and "Omni" processors)
NX1 (Family NX1A, B, C & D; All based on Ericsson By-Path Crossbar license)
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.
NX1D (Final production version)
NX1E (NX-1D with OMNI Processor for line/directory, trunk and number-group translation services)
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.
NX2 (Family Small 90–1800 line CDO Xbar)
NX2 (Original design 1959–1960)
NX2A (Improved cabinets ~1962)
UN2 Electrically and mechanically the same as the NX-2A but with design modifications specified by United Telecom (United Telecom/Sprint/Embarq) when they acquired North from L.M. Ericsson in the early 1960s. The "United" version of NX-2A replaced the intercabling connection blocks with wire wrap connections so that switches could be installed or expanded without having custom cable harnesses provided by North Electric.
Switcher Family (NX-2A pre-installed in a trailer for rapid installation or portable/emergency use)
TSW Basic Unit with growth to ~360 lines
TSW2 Expanded unit with growth to ~1200 lines
TSW3 Jumbo unit with growth to system recommended maximums
CS2000 (180,000 lines 200,000 trunks TDM and VoIP)
CS2100 (230,000 ports, 125,000 IP phones, 150,000 analog telephones, 125,000 digital telephones, 200,000 IP trunks, 50,025 digital trunks, 32,000 analog trunks, 200,000 SS7 trunks, 4,093 H.323 gateways, 112,000 nodes per host, 99,999 ACD agents)
DMS-10 Carrier Class Switching System (320 ISDN PRI links or more than 20,000 lines) (First "production" class 5 digital switch installed in the North American public telephone network[citation needed])
DMS-10 RLCM (640 line remote)
DMS-10 RSLE (520 line remote)
DMS-10 RSLM (640 line remote)
DMS-10S (super small DMS-10 for very small exchanges, less than 640 lines)
DMS-10M (prepackaged DMS-10, a Community Dial Office in a pre-packaged container/"box")
DMS-100 (large local digital Class 5) (also known as an SL-100 when used as CPE (Customer Provided Equipment or PBX service)also known as Centrex.A NortelDMS-100e used by an operator to offer local and long-distance services in France
DMS-100/200 (local/toll digital more than 135,000 lines)
DMS-200 (toll digital)
DMS-250 (Equal Access Carrier Switch-digital)
DMS-300 (International Gateway Switch-digital)
DMS-300/250 (combination Carrier/International Gateway 70,000 to 100,000 trunks)
DMS-500 (Local/Toll + CLEC Switch)
DMS-Global Services Platform
DMS-MTX (Cellular MTSO)
Stored Program (SP) (Electronic Stored Program Control using mini-bar switches)
SP1 2-Wire (Local)
The SP1 processor was constructed using Small Scale Integration (SSI) Diode Transistor (DTL) Logic. Two types of memory was used. Processor read/write scratch memory (called CALL STORE) was implemented using a magnetic core variant called Ferrite Sheet. Program and Data Store (used to store Software and infrequently changed data) was implemented using a technology called piggy back twistor - in modern parlance a write once, read many times non-volatile memory system). As was the case with the #1ESS systems, processors and memory were duplicated with automatic comparison of processing results and automatic recovery in the event that a mismatch was discovered. It did not however support the complex recovery mechanism provided in the #1ESS where a processor from one half of the complex could be connected to a mix of memory (both call store and program store) modules from both halves of the complex in order to achieve a working combination. Processor diagnostics would generally narrow a problem down to a board or three. Connection was made via a crossbar switch.
A SP1 2-wire variant was also available that provided Centrex services.
A version of the SP-1 ESS that could provide both 2 & 4 wire services was also built. The first instance was installed in Vegreville Alberta in 1976 or 1977.
SP1 4-Wire (Toll)
The first example of this switch was installed for Bell Canada, in Thunder Bay, Ontario in late 1973. It provided toll services for North Western Ontario and CAMA (Centralized Message Accounting) for the City of Thunder Bay. The City of Thunder Bay which operated its own Telephone Company installed a number of 2W SP1s.
SP1E (used NT40 processor which was later the first processor system for the DMS-100 Family of switches)
NE-1ESS (Northern Electric version of Western Electric) #1ESS {licensee} [citation needed]
Bell Canada operated NE-1ESS 2 wire switches (some of which also provided Centrex services) in Toronto, Ottawa and Montreal. A 4W NE-1ESS was installed in Thunder Bay to provide telephone switching services (SAGE and AUTOVON)for USA and Canadian bases in that part of North America. The #1ESS was implemented using discrete diode transistor logic. A typical circuit board would implement a single 4 input "NAND" gate. Of the myriad of cards in the system - many were dedicated diagnostic gates. The diagnostic software had a very high (95% +) success rate identifying a single failing card. The success rate dropped quickly thereafter. Drifting Voltage Regulator cards caused a lot of angst.
NE-4A (Northern Electric version of Western Electric) 4A toll {licensee} [citation needed])
NE-5XB (Northern Electric version of Western Electric) #5Xbar {licensee} [citation needed])
^Oki Electric Industry Co., Ltd. "1980 - 1989 - Corporate Information - OKI Global".
^(PDF). Archived from the original (PDF) on 2012-03-04. Retrieved 2022-11-11.
^. Archived from the original on 2012-03-03. Retrieved 2010-02-06.
^. Archived from the original on 2012-03-03. Retrieved 2010-02-06.
^. Archived from the original on 2009-06-04. Retrieved 2010-02-06.
^ abcMytelka, Lynn Krieger (1999). Competition, Innovation and Competitiveness in Developing Countries. Organisation for Economic Co-operation and Development. Development Centre. ISBN9789264170919.
^Huurdeman, Anton A. (2003-07-31). The Worldwide History of Telecommunications. John Wiley & Sons. ISBN9780471205050.
^Chapuis, Robert J.; Joel, Amos E. (2003). 100 Years of Telephone Switching. IOS Press. ISBN9781586033729.
^Chapuis, Robert J.; Joel, Amos E. (2003). 100 Years of Telephone Switching. IOS Press. ISBN9781586033729.
^Chapuis, Robert J.; Joel, Amos E. (2003). 100 Years of Telephone Switching. IOS Press. ISBN9781586033729.
^"Oresis Communications, Inc.: Private Company Information - Businessweek". Bloomberg News. 16 May 2023.
April 19, 2024
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This list of telephone switches is a compilation of telephone switches used in the public switched telephone network PSTN or in large enterprises Contents 1 American Digital Switching 2 Alcatel 2 1 Thomson 3 Automatic Electric Co 4 Avaya 5 BPL Telecom 6 GPO PO British Telecommunications 7 C DOT 8 CopperCom 9 Coral Telecom Ltd 10 Datang Telecom 11 DGT 12 Daewoo 13 Dialexia 14 DIAX 15 DSC Communications Corp 16 Electronics and Telecommunications Research Institute Korea 17 Ericsson 18 Excel Switching 19 EFAR TELEKOM 20 Fujitsu 21 Great Dragon Telecom GDT 22 GEC 23 Hasler 24 Hitachi 25 Huawei 26 Hyundai Electronics Industries 27 Indian Telephone Industries Limited 28 Inventel 29 Iskratel 30 Italtel 31 ITEC 32 ITT Corporation Includes ITT Kellogg 32 1 ITT Europe 33 JS Telecom 34 KAREL 35 Kvant Intercom 36 KD 37 Leich 38 LG Electronics 39 LONIIS 40 Marconi was GEC 41 Metaswitch 42 Mitel 42 1 TDM Digital switches 42 2 Hybrid or IP only switches 43 Motorola 44 NEC 45 Nika Ukraine 46 Nokia 47 North Electric Galion Ohio 48 Nortel 49 Nortel Netas Turkey 50 NTT 51 Oki 52 Philips 53 ROLM 54 Spetstroy Svyaz 55 Pupin Telecom 56 REDCOM Labs 57 SAGEM 58 Samsung Telecommunications 59 Siemens 60 Sonus 61 Stromberg Carlson 62 Tadiran Telecom 63 Telesis IP Santral 64 Telrad 65 TEMCCO Iran 43 66 Tesla 66 1 Step by Step 66 2 Crossbar switch 67 Tekelec 68 Tropico 69 VEB Kombinat Nachrichtenelektronik 70 Veraz Networks 71 VESNET 72 Vidar Corporation TRW Vidar 73 Western Electric AT amp T Technologies Lucent 73 1 Panel 73 2 Step by Step Strowger 73 3 Crossbar switch 73 4 Electronic switching systems Stored program control 73 4 1 Space division 73 4 2 Time division multiplexing 74 USSR manufacturers 75 Yeastar 76 ZTE 77 Other digital switches 78 Other experimental or canceled switches 79 ReferencesAmerican Digital Switching editCentura 2000 1 Alcatel editThis lists Alcatel switches before the merger with Lucent Technologies 1000 E10 S12 during the 1990s the E10 and S12 systems were converted into a single product line E10 versions E10A E10N3 Original switch introduced in 1972 one of the earliest deployments of TDM switching in the world E10B E10N1 Major revision in the 1980s which eventually saw ISDN capabilities Common in France Ireland China India and elsewhere E10B3 major revision in the 1990s Common in France amp Ireland OCB 283 Another name for more modern versions of E10B and often the name used in India to distinguish it from older versions E10 MT formerly Thomson MT 25 found mostly in France and MT20 too E10 Five E10B adapted for the North American environment as a class 5 switch E10S satellite switching unit E10 MSC mobile switching center for GSM and other protocols 1000 MM E10 Evolved switch for multimedia broadband and IP network environments Provides POTS ISDN and next generation services S12 Formerly known as System 12 or the ITT 1240 or acquired by Alcatel when it purchased ITT s assets in Europe This is a very widely deployed switching system found in Italy Germany Belgium Australia and many other countries around the world There are a large number of versions of this type of switch ranging from local to transit to international gateway to mobile switching centers The line was converted with the E10 family of exchanges OmniPCX Office OmniPCX EnterpriseThomson edit MT 20 2 MT 25 2 MT 35 2 Automatic Electric Co editAutomatic Electric started producing electromechanical switching systems in the 19th century 32A42 32A44 35E97 370A 370B 375A 375B 385A 385B C1 EAX CXP5 CXP5A EAX 1 EAX 2 EAX 3 ESU 3072 Line FW1 Four Wire 1 Toll Switch GTD 3 EAX Toll switch NOT CCS7 capable although CCIS capable GTD 5 EAX Class 5 switch many in use today was the primary switch in former GTE exchanges Now supported by Lucent GTD 120 Digital PABX GTD 1000 Digital PABX GTD 4600 Digital PABX OMNI S1 Digital PABX OMNI S2 Digital PABX OMNI S3 Digital PABX Strowger Automatic Toll Ticketing SATT relay and type 45 rotary switch mechanics Strowger Step by Step Strowger patents were exclusively licensed to the Automatic Electric Company TSPS Traffic Service Position System obsolete system for operator handled LD calls XPT No 1 101 Director OXO OXEAvaya editCurrently Available Avaya Switches Application Server 5300 AS5300 Communication Manager S8800 S8730 S8510 S8400 S8300D INDeX IP Office 500v2 Discontinued Avaya Switches 1A2 Key System Electro mechanical Key System made by Western Electric DEFINITY BCS Business Communications System DEFINITY ECS Enterprise Communications Server DEFINITY G3R RISC processor DEFINITY Communications System Generic 2 Formerly System 85 DEFINITY Communications System Generic 3 Formerly System 75 DIMENSION Previously made by AT amp T G3MCC Multi Carrier Cabinet HORIZON Previously made by AT amp T MERLIN Classic 206 410 820 Originally made by AT amp T MERLIN PLUS Classic Originally made by AT amp T MERLIN II Classic Originally made by AT amp T MERLIN LEGEND MERLIN MAGIX Integrated Communications System PARTNER PARTNER II PARTNER PLUS PARTNER ACS Advanced Communications System Replaced by IP Office 500 Partner Mode Edition PARTNER Small Office Edition S8700 amp S8720 S8500 S8300 a b amp c SPIRIT System 25 Previously made by AT amp T System 75 Previously made by AT amp T System 75 XE Previously made by AT amp T System 85 Previously made by AT amp T IP Office 400 SOE 403 406 406v2 412 Replaced by IP Office 500BPL Telecom editSigma Indx 100 Sigma Indx 150 Sigma Indx 250 Sigma Indx 2000GPO PO British Telecommunications editTXS IAX5 Island Automatic eXchange No 5 SAX Small Automatic eXchange UAX5 UAX6 UAX7 UAX8 UAX9 UAX10 UAX11 UAX12 UAX13 UAX14 UXE7 UXE8 TXK1 TXK5 Ericsson ARM200 TXK6 Ericsson AKE TXE1 TXE2 TXE3 TXE4 TXE4A TXE4E TXE5 TXE6 System X System Y Ericsson AXE UXD5 3 C DOT editAN RAX 4 MAX 4 RAX 4 TAX 5 CopperCom editCSX 1100 CSX 2100Coral Telecom Ltd editIRIS IVDX Cloud IRIS IVDX IRIS Lite IRIS NGX DX 2000 SBDXDatang Telecom editSP30 6 7 DGT editDGT3450Daewoo editDTS 1100 DTS 3100 DTS 4000 8 Dialexia editDial Gate VoIP SoftswitchDIAX editDikon ISDN switch 9 DSC Communications Corp editDSC merged with Alcatel Lucent DEX 200 DEX 400 DEX 600 DEX 600E DEX 600SCElectronics and Telecommunications Research Institute Korea editThe TDX switch was a joint project with Korea Telecom and four manufacturers LG Electronics Samsung Telecommunications Daewoo Telecom and Hanwha Telecom 10 TDX 1 8 11 TDX 10 8 TDX 100 8 Ericsson editAGF AKE AR10 ARB telex ARE11 ARE13 ARF10 ARF101 ARF102 ARK D decadic signalling ARK M mfc signalling ARK523 small minor switching centre ARM20 ARM50 ARM 201 ARM202 ATE ATE NB ATE VB AXE spc electronic 1976 AXE 10 AXE 10 Remote AXE Local 7 AXE Transgate AXE810 Business Phone Business Phone Compact Business Phone 50 Business Phone 128i Business Phone 250 CP 400 crossbar CPP Media Gateway MD110 MX ONE MX ONE Telephony Switch TSW MX ONE Telephony Server TS RuraxExcel Switching editEXS 1000 12 EXS 2000 12 EXS 4000 13 EXS 8000 14 EXS 16000 13 EXS 30000 13 LNX 1000 12 LNX 2000 12 EFAR TELEKOM editMS26 15 MS38C MS48CFujitsu editC140 C460 Focus I Focus II Focus III Focus 50 Focus 100 Focus 196 Focus 960 Focus Elite FETEX 100 FETEX 150 FETEX 150 Local FETEX 150 Toll Essence 630 Essence 650 9600 Series Branded in Australia as Telecom 9600 series 9600VS 9600S 9600M 9600L Coral branded as Fujitsu in Australia New Zealand 1996 2002 manufactured by Tadiran Telecom Coral FlexiCom 200 formerly Coral SL discontinued Coral FlexiCom 300 formerly Coral I discontinued Coral FlexiCom 400 formerly Coral II Coral FlexiCom 5000 formerly Coral III Coral FlexiCom 6000 formerly Coral III Coral IPx Office Coral IPx 500 Coral IPx 800 Coral IPx 3000 Coral IPx 4000Great Dragon Telecom GDT editHJD04 16 GEC editGEC later became Marconi Britain SE50 4000 type in GPO naming Hasler editList 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 HS 25 modified from the Ericsson OL 100 system with double relays and 25 point selector Ericsson license mainly used for small villages and towns in the counties HS 31 new developed register system introduced in 1931 based on a new flat type relay and a 100 point two motion selector suitable for small and large exchanges HS 52 new developed register system introduced in 1953 based on a new 120 point selector which was in fact a 4 x 30 point uniselector with 2 x 4 brushes offset by 180 no zero position HS 52 A new variant of HS 52 from 1973 with an almost full electronic register evaluation unit called Umrechner not processor based but centralized programmable by diode matrices HS 52 B Processor controlled multiregister system with identifier but the relay and selector based coupling stage was maintained from the original HS 52 system HS 68 prototype of a semi electronic switching system based on adhesive reed relays in the coupling stage One sample system built but not pursued because of the arising PTT IFS project AXE 10 digital switching system from Ericsson initially built and adapted for the Swiss market by Ascom Hasler under Ericsson license 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 editEX10 HDX 10 17 DX DX30 DX40 MDX HCX5000Huawei editC amp C08 18 Hyundai Electronics Industries editHDX 300 19 HDX 2000 8 Indian Telephone Industries Limited editESAX 200 20 ILT 512 20 ILT 2048 20 MILT 64 20 Inventel editACT6000 21 Iskratel editSI2000 22 SI3000 23 Italtel editCT1 CT2 CIMA UT10 UT20 TN16 UT100 iMSS Italtel Multi Service Solution a k a i SSW i VLS Italtel Virtual Lite Switch i MCS Italtel Multimedia Communications Suite NGN Class 4 and Class 5 SoftSwitch IMS Core TAS for delivery of POTS ISDN SIP services over legacy and IP Broadband access type networks i RPS Italtel Routing Policy Server Centralized Routing Platform for IP Convergent NetworksITEC editEMS 1 The ITEC Electronic Modular Switch is an electronic direct control switching system The modules are combined to form a complete switch or any of the modules can be added to your present Step by Step Systems EMS 2 The EMS 2 RURAL SWITCH is a stored program control analog switch designed to be cost effective in small exchanges The modular design with connectorized cabling permits fast initial installation and growth The system requires minimum maintenance and is particularly suitable for unattended exchanges The EMS 2 distributed control design prevents total switch failure which could isolate a remote community IDS Integrated Digital System ITT Corporation Includes ITT Kellogg edit1210 originally North Electric DSS 1240 TCS5 TCS2 TE500A TE400H TE400 TD100 Kellex 7J 7X2 7X3 7XB A1 A1 SPC CRX CSX K60 ITT Kellogg K7 ITT Kellogg K1040 PC32B Relaymatic ITT Kellogg TCS5 TRS4 AN TTC 22 100 Line Automatic Manual Military Tactical Switch retired ITT Europe edit 7A 7A1 7A2 7E Rotary machine switching system driving system 7D Rotary for smaller rural areas 7B 7B1 Rotary French adaptation 6 6N1 6N2 Rotary French adaptation step by step Original R6 have not register Pentaconta crossbar Metaconta SPC electronic JS Telecom edit Later Bosch Telecom JISCOS 8005 24 JISCOS 8007 24 KAREL editMS38 25 IPG Communication Platform IPG1000 500 MS48C 128 DS200 IPS 400Kvant Intercom editKvant Kvant 26 Kvant E Kvant E 26 KD editXE30 27 Leich editAll Relay TPS or terminal per station CS100 CS200 CX 2 CX 6 CX 90 LXP 2 LXP 3 LXP 4LG Electronics editSTAREX TX1 28 STAREX VK 28 VKX Ltd Vietnam LONIIS editATSC 90Marconi was GEC editSystem XMetaswitch editVP2510 VP3510 VP6010 CA9020 MG2510 MG3510Mitel editTDM Digital switches edit SX5 SX10 SX20 SX50 SX100 SX200 D SX200 Light SX200 ML EL ELx SX2000 SG SX2000 S SX2000 Light GX5000L GX5000SHybrid or IP only switches edit 5000 Communications Platform formerly Inter tel 5000 CP SX200 ICP 3100 ICP 3300 ICP or Mitel Communications Director MCD MiVoice BusinessMotorola editThese are Mobile Telephone Switching Office Cellular switches EMX2500 EMX4 EMX5000NEC editAspire Topaz C410 C460 NC10 NC23 NC100 NC23SE NC230 NC400 NC460 NA820 NCA20 NCX23 ND10A ND10B ND20A ND20B ND20S NEAX 61 K L M amp S NEAX 61E NEAX 61E Remote NESXS Nippon Electric step by step based on license from Western Electric M100 NEAX31 Discrete Electronic CPU 4 stage Crossbar switching fabric PBX NEAX12 Analog Digital Hybrid PBX NEAX22 Analog Digital hybrid PBX NEAX 2000 1000 NEAX2400 Fully Digital PBX XN120 NEC Univerge SL1000 Small or Medium Sized VoIP And TDM Enterprise IP Systems NEC Univerge SV7000 Fully IP VoIP and TDM Pure IP Communication server NEC Univerge SV8100 Fully IP VoIP and TDM NEC Univerge SV9100 Fully IP VoIP and TDM NEC Univerge SV8300 Fully IP VoIP and TDM Pure IP Communication server NEC Univerge SV8500 Fully IP VoIP and TDM Pure IP Communication server NEC Univerge SV9500 Fully IP VoIP and TDM Pure IP Communication server NEC Univerge 3C Pure IP Communication serverNika Ukraine editATSK50 200 29 ATSK100 2000 30 Nokia editDX 200 DX 220 DX 220 Compact IPA 2800North Electric Galion Ohio editCX All Relay Exchanges CX evolved from the Automanual system designed by Edward Clements Clement eXchange or Community eXchange CX30 30 line CX60 60 line CX100 100 line CX200 broadspan up to 200 lines CX1000 large CX expandable to 10 000 lines MCX A version of the CX product line designed by F R McBerty after leaving Western Electric Bell Labs and becoming President of North Electric 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 DSS1 North s first digital switch for local exchanges This later was renamed the ITT 1210 product upon purchase of North electric by ITT DSS2 ETS4 Large 4A ETS class toll switch based on Ericsson code switch NTS4E 4 wire toll switch with Xbar switches and Omni processors NX1 Family NX1A B C amp D All based on Ericsson By Path Crossbar license 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 NX1D Final production version NX1E NX 1D with OMNI Processor for line directory trunk and number group translation services 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 NX2 Family Small 90 1800 line CDO Xbar NX2 Original design 1959 1960 NX2A Improved cabinets 1962 UN2 Electrically and mechanically the same as the NX 2A but with design modifications specified by United Telecom United Telecom Sprint Embarq when they acquired North from L M Ericsson in the early 1960s The United version of NX 2A replaced the intercabling connection blocks with wire wrap connections so that switches could be installed or expanded without having custom cable harnesses provided by North Electric Switcher Family NX 2A pre installed in a trailer for rapid installation or portable emergency use TSW Basic Unit with growth to 360 lines TSW2 Expanded unit with growth to 1200 lines TSW3 Jumbo unit with growth to system recommended maximums TSD toll switch 31 AN TTC 20 568 Line Military Fixed Switch Used by US Air Force only one was known in existence at Sembach AB Germany retired AN TTC 30 568 Line Military Tactical Mobile Switch Used by US Army and Air Force retired Nortel editApplication Server 5300 AS5300 Business Communications Manager BCM BCM50 BCM200 BCM400 BCM450 Nortel Norstar Key Systems 308 616 824 Modular Norstar CICS Compact Integrated Communication System Norstar MICS Modular Integrated Communication System Nortel Meridian 1 PBX Option 11 11E 11C Option 21 21C Option 51 51C Option 61 61C Option 81 81C Communication Servers CS Systems CS1000 22 500 lines 3200 trunks TDM and VoIP CS1500 48 000 lines 8 400 trunks TDM and VoIP CS2000 Compact CS2000 180 000 lines 200 000 trunks TDM and VoIP CS2100 230 000 ports 125 000 IP phones 150 000 analog telephones 125 000 digital telephones 200 000 IP trunks 50 025 digital trunks 32 000 analog trunks 200 000 SS7 trunks 4 093 H 323 gateways 112 000 nodes per host 99 999 ACD agents Digital Multiplex System DMS DMS 10 Carrier Class Switching System 320 ISDN PRI links or more than 20 000 lines First production class 5 digital switch installed in the North American public telephone network citation needed DMS 10 RLCM 640 line remote DMS 10 RSLE 520 line remote DMS 10 RSLM 640 line remote DMS 10S super small DMS 10 for very small exchanges less than 640 lines DMS 10M prepackaged DMS 10 a Community Dial Office in a pre packaged container box DMS 100 FAMILY of Digital Exchanges DMS 100 large local digital Class 5 also known as an SL 100 when used as CPE Customer Provided Equipment or PBX service also known as Centrex nbsp A Nortel DMS 100e used by an operator to offer local and long distance services in France DMS 100 200 local toll digital more than 135 000 lines DMS 200 toll digital DMS 250 Equal Access Carrier Switch digital DMS 300 International Gateway Switch digital DMS 300 250 combination Carrier International Gateway 70 000 to 100 000 trunks DMS 500 Local Toll CLEC Switch DMS Global Services Platform DMS MTX Cellular MTSO Stored Program SP Electronic Stored Program Control using mini bar switches SP1 2 Wire Local The SP1 processor was constructed using Small Scale Integration SSI Diode Transistor DTL Logic Two types of memory was used Processor read write scratch memory called CALL STORE was implemented using a magnetic core variant called Ferrite Sheet Program and Data Store used to store Software and infrequently changed data was implemented using a technology called piggy back twistor in modern parlance a write once read many times non volatile memory system As was the case with the 1ESS systems processors and memory were duplicated with automatic comparison of processing results and automatic recovery in the event that a mismatch was discovered It did not however support the complex recovery mechanism provided in the 1ESS where a processor from one half of the complex could be connected to a mix of memory both call store and program store modules from both halves of the complex in order to achieve a working combination Processor diagnostics would generally narrow a problem down to a board or three Connection was made via a crossbar switch A SP1 2 wire variant was also available that provided Centrex services A version of the SP 1 ESS that could provide both 2 amp 4 wire services was also built The first instance was installed in Vegreville Alberta in 1976 or 1977 SP1 4 Wire Toll The first example of this switch was installed for Bell Canada in Thunder Bay Ontario in late 1973 It provided toll services for North Western Ontario and CAMA Centralized Message Accounting for the City of Thunder Bay The City of Thunder Bay which operated its own Telephone Company installed a number of 2W SP1s SP1E used NT40 processor which was later the first processor system for the DMS 100 Family of switches NE 1ESS Northern Electric version of Western Electric 1ESS licensee citation needed Bell Canada operated NE 1ESS 2 wire switches some of which also provided Centrex services in Toronto Ottawa and Montreal A 4W NE 1ESS was installed in Thunder Bay to provide telephone switching services SAGE and AUTOVON for USA and Canadian bases in that part of North America The 1ESS was implemented using discrete diode transistor logic A typical circuit board would implement a single 4 input NAND gate Of the myriad of cards in the system many were dedicated diagnostic gates The diagnostic software had a very high 95 success rate identifying a single failing card The success rate dropped quickly thereafter Drifting Voltage Regulator cards caused a lot of angst NE 4A Northern Electric version of Western Electric 4A toll licensee citation needed NE 5XB Northern Electric version of Western Electric 5Xbar licensee citation needed SA1 Small Northern designed crossbar CDO SA2 Small Northern designed crossbar CDO SF1 Small Northern designed crossbar CDO NorstarNortel Netas Turkey editElif I 32 Elif I I 32 DRX 4 32 NTT editD60 27 D70 27 Oki editDiscovery I PBX Discovery II PBX Discovery III PBX Discovery 8000 PBX D10 33 D60 34 D70 35 KB270 17 Philips editUR UR NB UR49 URVB UV PRX A PRX D is3000 TDM PBX SIP Net Server Software PBX owned by NEC ROLM editCBX Versions 5 6 7000 CBXII Versions VS S M L 8000 8004 VL 9000 9004 9751 CBX IBM co design 9004 9005 versions Models 10 20 40 50 and multinode 70 9751 9006i Version 1 6 Also called Models 30 and 80 Sold also as Siemens Hicom HCM300 Redwood limited key system Spetstroy Svyaz editProton SSS 36 Pupin Telecom editDKTS 20 37 DKTS 30 38 REDCOM Labs editTRANSip SLICE HDX IGX A IGX MT IGX N MDX 10K MDX 384 modular exchange stackable to 384 lines trunksSAGEM editEltex II Telex Eltex V Telex Samsung Telecommunications editS 1240 8 SDX 100 SDX 200 8 SDX RB 39 TDX 1 40 TDX 1B 40 TDX 10 40 Siemens editSD50 PBX SD192MX PBX SD232 PBX Saturn I PBX Saturn II PBX Saturn IIE PBX Saturn III PBX Hicom 100 Hicom 150 150E Hicom 200 Also sold as the ROLM 9200 CBX Hicom 300 Also sold as the ROLM 9751 9006i CBX HiPath 3000 HiPath 4000 HiPath 5000 HiPath 8000 OpenScape SIP No 16 Step by Step No 17 Step by Step No 51 Step by Step EDX P EMD55 EMD56 EMD57 ESK CP24 ESK CP44 ESK CP44A ESK 10000 E 41 EWSD Remote Switch Unit RSU DE3 Remote Switch Unit RSU DE4 Remote Switch Unit RSU DE5 RCUB 800C DCO CS Formerly Stromberg Carlson DCO Sold to Genband in 2006 HiQ8000 SPX2000 Formerly Equitel Sonus editGSX9000 GSX4000 PSX6000 EMS 12000 Topcom 601 Topcom 200 Hicom 300Stromberg Carlson editDCO 21 DCO 80 DCO 200 DCO 360 Century DCO6000 DCO Remote Line Switch 1000 RLS 1000 DCO Remote Line Switch 4000 RLS 4000 RLS 450 DCO SE DTM ESC 1 Crossreed electronic exchange ESC 3 MS30 SC 5 5 Crossbar licensed from Northern Electric Canada for US sales distribution Motorswitch Siemens Germany XY Stromberg version of Ericsson flat motion switch operated in horizontal planes The DCO family starts as generic DCO DCO DCO E Line Switch 10 000 lines DCO SE Line Switch 10 000 lines software enhanced class features centrex etc DCO RLS Remote Line Switch controlled by hosts above RLS 1000 Pedestal mount cabinet 1000 lines in a subdivision required multiple T 1 s to host RLS 4000 Same thing but 4000 lines RLS This has the ability in a host outage to make intra cabinet calls The line switches will also talk to AT amp T SLC 96 pedestals 96 lines on a ped DCO CS Long distance very limited lines 1 trunking to long distance all T 1 cards Note DCO systems are now supported by GENBANDTadiran Telecom editCoral FlexiCom 200 formerly Coral SL discontinued Coral FlexiCom 300 formerly Coral I Coral FlexiCom 400 formerly Coral Idiscontinued I Coral FlexiCom 5000 formerly Coral III Coral FlexiCom 6000 formerly Coral III Coral IPx Office Coral IPx 500 Coral IPx 800 Coral IPx 3000 Coral IPx 4000 Coral ICE Coral Sea Soft SwitchTelesis IP Santral editTelesis IP Santral Telesis Px24 Mrx Telesis Px24N6 Telesis Px24N7 Telesis Px24Mr6 Telesis Px24Mr7 Telesis Px24Mr6 Telesis Px24Xr5Telrad editTMX 10 42 TMX 100 42 TEMCCO Iran 43 editNational Digital Switch B NDS 44 TEM X1000 45 TEM X256 46 Tesla editStep by Step edit P51 PSTN switch modular design expandable from 100 to 10000 lines per exchange UTU PBX mechanical components identical to P51 but different signaling USTD PBX especially designed for Czechoslovak Railways with 4 wire long distance stages Crossbar switch edit PK 201 PSTN Switch with R1 register signaling not widely used PK 202 PSTN Switch with R2 register signaling very frequently used in 80 s UK 101 UK 102 PBXes up to 23 and 57 lines UK 111 UK 112 PBXes of higher capacities expandable to thousands of lines Tekelec editTekelec 9000 Distributed Switching Solution formerly SanteraOne Tekelec 7000 Class 5 Packet Switch formerly Taqua Open Compact Exchange Tropico editTropico C Subscriber Line Digital Concentrator 47 Tropico R Small Capacity Local Tandem Exchange 47 Tropico RA Local Transit Exchange 47 VEB Kombinat Nachrichtenelektronik editDVZ 2000 48 space division digital switch ENSAD 48 time division digital switch OZ 100 D 48 49 96 line time division digital switch Veraz Networks editControl Switch 5 8 50 VESNET editDRX 4 51 Vidar Corporation TRW Vidar editIMA2 ITS 4 ITS 4 5 ITS 5Western Electric AT amp T Technologies Lucent editPanel edit Local Panel Battery cut off BCO Ground cut off GCO Panel Tandem Panel Sender Tandem Office Selector TandemStep by Step Strowger edit No 1 No 350A No 355A CDO Community Dial Office No 356A No 360ACrossbar switch edit Crossbar Tandem No 1 Crossbar No 3 Crossbar No 3 Crossbar 2 Wire No 3 Crossbar 4 Wire No 4 Crossbar No 4A CTS Crossbar Card Translator System No 4A ETS Crossbar Electronic Translator System No 4M Crossbar No 4M ETS Crossbar No 5 Crossbar No 5 Crossbar 2 Wire No 5 Crossbar 4 Wire No 5 ETS Crossbar No 5A CrossbarElectronic switching systems Stored program control edit Space division edit Electronic Central Office the first electronic switching system operating in a trial in Morris Illinois from November 1960 to January 1962 52 53 No 1 ESS 1ESS No 1 ESS 2 Wire No 1 ESS 4 Wire No 1A ESS No 2 ESS 2ESS No 2A ESS No 2B ESS No 2C ESS No 3 ESS 3ESS Time division multiplexing edit No 101 ESS a TDM PBX system installed partly on corporate premises and partly in the central office No 4 ESS 4ESS No N 4 ESS Note N stands for New 4ESS No 5 ESS 5ESS No 5 ESS CDX Compact Digital Exchange No 5 ESS 2000 VCDX Very Compact Digital Exchange No 5 ESS 2000 VCDX Remote No 5A RMS Remote Switching Module No 5B RMS Remote Switching Module No 5E XC Extended Capabilities No 7 R E Revolutionary Evolutionary No 10A Remote Switching System 10A RSS USSR manufacturers editAMTS 1M 54 AMTS 2 54 AMTS 3 54 Kvarc Quartz 54 M 10C 55 ATS 47 56 ATS 49 ATS 54 56 ATS K 56 ATS K4 56 ATSK U 56 Yeastar editS20 S50 S100 S300 K2 P550 P560 P570ZTE editZX500 57 ZXJ10 58 ZXJ2000 57 Other digital switches editBZ5000 59 formerly Batik Elcom 4KT from Batik Zetax Brazil 60 iGen 61 PacketStar PSAX1000 1250 2300 4500 Plexus Lucent Gateway Platform Lucent Compact Switch formerly Telica Plexus 9000 Zetax ZTX610 62 Other experimental or canceled switches editLynch LCS 63 Mitel CX5000 64 Collins Radio Corp DTS 65 Oresis ISIS 700 66 References edit http www allbusiness com media telecommunications 7224681 1 html dead link a b c Article title Error May 1988 pp 39 43 a b c Circuit Switch Archived from the original on 2010 01 04 Retrieved 2010 02 06 Telecommunication Engineering Centres Department of Telecommunications Government of India Archived from the original on 2010 05 08 Retrieved 2010 02 06 Plunkett Jack W July 2007 Plunkett s Wireless Wi Fi Rfid amp Cellular Industry Almanac Wireless Wi Plunkett Research ISBN 9781593920906 Sp30超级数字程控交换机 shenzhen datang com Archived from the original on 2 May 2007 Retrieved 12 January 2022 a b c d e f g Mahlich Jorg Pascha Werner 2007 07 24 Innovation and Technology in Korea Springer ISBN 9783790819144 Narrowband International Executive Summary Untitled Document Archived from the original on 2011 07 07 Retrieved 2010 02 06 SAMSUNG BUSINESS GLOBAL a b c d Report No N 80 A TXT Federal Communications Commission 1998 08 12 Archived from the original on 2018 11 07 Retrieved 2022 11 11 a b c 美国EXCEL公司开放式可编程业务平台技术说明 pbx CTI论坛 KOMMUTACIONNAYa PLATFORMA EKSEL Efar Telekom Official Website GDT Information Technology Group Co Ltd Archived from the original on 10 February 2005 a b Chapuis Robert J Joel Amos E 2003 100 Years of Telephone Switching IOS Press ISBN 9781586033729 http www huawei com support pages training trainingProjectTree do actionFlag view amp projectId TP0000001609 amp colID ROOTENWEB 7CCO0000002854 7CCO0000002860 amp node 38 amp typeId 38 permanent dead link Hyundai Multimedia PC Archived from the original on 5 August 1997 a b c d Error May 1988 pp 44 49 What to See at TELECOM 95 Archived from the original on 2009 07 16 Retrieved 2010 02 06 Si2000 TDM Archived from the original on 2009 10 14 Retrieved 2010 01 20 Call server Archived from the original on 2011 07 13 Retrieved 2011 01 31 a b World Bank Group 404 Error PDF Karel Official Website a b Gl stranica s klyuchevymi slovami a b c Chapuis Robert J Joel Amos E 2003 100 Years of Telephone Switching IOS Press ISBN 9781586033729 a b LG Public Switching Switch Archived from the original on 2008 01 15 Oborudovanie dlya ATSK 50 200 Archived from the original on 1 August 2007 Oborudovanie dlya ATSK 100 2000 Archived from the original on 15 February 2008 Error doi 10 1109 TCOM 1969 1090149 a href Template Cite journal html title Template Cite journal cite journal a Cite journal requires journal help a b c Nortel Netas R amp D History Archived from the original on 2010 01 02 Retrieved 2010 02 06 Oki Electric Industry Co Ltd 1970 1979 Corporate Information OKI Global 沖電気工業株式会社 1981年 1990年 企業情報 OKI Oki Electric Industry Co Ltd 1980 1989 Corporate Information OKI Global Telecommunication platform Proton SSS PDF Archived from the original PDF on 2012 03 04 Retrieved 2022 11 11 DKTS20 Archived from the original on 2012 03 03 Retrieved 2010 02 06 DKTS30 Archived from the original on 2012 03 03 Retrieved 2010 02 06 SDX RB from ST SAMSUNG Archived from the original on 2009 06 04 Retrieved 2010 02 06 a b c Mytelka Lynn Krieger 1999 Competition Innovation and Competitiveness in Developing Countries Organisation for Economic Co operation and Development Development Centre ISBN 9789264170919 Huurdeman Anton A 2003 07 31 The Worldwide History of Telecommunications John Wiley amp Sons ISBN 9780471205050 a b Error PDF May 1991 72 76 doi 10 1109 ICCSSE 1991 151177 S2CID 108629018 a href Template Cite journal html title Template Cite journal cite journal a Cite journal requires journal help SWiSH v2 0 About TEMC Co Welcom to Official Site Of Telecommunication Equipment Manufacturing Cooperative Co Archived from the original on 9 February 2005 a href Template Cite web html title Template Cite web cite web a CS1 maint numeric names authors list link Products1 Archived from the original on 10 April 2005 Products1 Archived from the original on 5 April 2005 Products1 Archived from the original on 5 April 2005 a b c Error PDF November 1989 324 327 doi 10 1109 TENCON 1989 176952 S2CID 109768677 a href Template Cite journal html title Template Cite journal cite journal a Cite journal requires journal help a b c Chapuis Robert J Jr A E Joel Joel Amos E 2003 100 Years of Telephone Switching IOS Press ISBN 978 1 58603 372 9 VEB Kombinat Nachrichtenelektronik Digitale Netze halten Einzug in der DDR computerwoche de Archiv 1986 10 Archived from the original on 2011 07 17 Retrieved 2010 02 21 Softswitch Media Gateway amp Digital Compression Veraz Networks Products Archived from the original on 2009 02 06 Retrieved 2010 03 22 VESNET Telecommunication Archived from the original on 2011 07 22 Retrieved 2010 03 01 W H C Higgins A survey of Bell System Progress in Electronic Switching Bell System Technical Journal 44 6 937 1965 page 939 AT amp T Electronic Central Office Long Lines 40 5 16 December 1960 a b c d Gluhov V T September 1994 Error PDF IEEE Journal on Selected Areas in Communications 12 7 1146 1151 doi 10 1109 49 312941 Vestnik svyazi 1987 5 p 23 a b c d e Campbell R W 1995 Soviet and post Soviet telecommunications An industry under reform a b Error doi 10 1109 ISTAS 2004 1314320 S2CID 999542 a href Template Cite journal html title Template Cite journal cite journal a Cite journal requires journal help ZTE CORPORATION Archived from the original on 23 August 2002 Products amp Solutions Archived copy PDF Archived from the original PDF on 2011 06 06 Retrieved 2010 01 20 a href Template Cite web html title Template Cite web cite web a CS1 maint archived copy as title link Lucent Stakes Next Gen Claim with Rural Switch Rollout Archived from the original on 2011 07 21 Retrieved 2010 01 20 PHS MoU Group Newsletter Issue 13 Chapuis Robert J Joel Amos E 2003 100 Years of Telephone Switching IOS Press ISBN 9781586033729 Chapuis Robert J Joel Amos E 2003 100 Years of Telephone Switching IOS Press ISBN 9781586033729 Chapuis Robert J Joel Amos E 2003 100 Years of Telephone Switching IOS Press ISBN 9781586033729 Oresis Communications Inc Private Company Information Businessweek Bloomberg News 16 May 2023 Retrieved from https en wikipedia org w index php title List of telephone switches amp oldid 1215308081, wikipedia, wiki, book, books, library,
