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- Synchronous_Data_Link_Control abstract "Synchronous Data Link Control (SDLC) is a computer communications protocol. It is the layer 2 protocol for IBM's Systems Network Architecture (SNA). SDLC supports multipoint links as well as error correction. It also runs under the assumption that an SNA header is present after the SDLC header. SDLC was mainly used by IBM mainframe and midrange systems; however, implementations exist on many platforms from many vendors. The use of SDLC (and SNA) is becoming more and more rare, mostly replaced by IP-based protocols or being tunneled through IP (using AnyNet or other technologies).In 1975, IBM developed the first bit-oriented protocol, SDLC, from work done for IBM in the early 1970s. This de facto standard has been adopted by ISO as High-Level Data Link Control (HDLC) in 1979 and by ANSI as Advanced Data Communication Control Procedures (ADCCP). The latter standards added features such as the Asynchronous Balanced Mode, frame sizes that did not need to be multiples of bit-octets, but also removed some of the procedures and messages (such as the TEST message).SDLC operates independently on each communications link, and can operate on point-to-pointmultipointor loop facilities, on switched or dedicated, two-wire or four-wire circuits, and with full-duplex and half-duplex operation.A unique characteristic of SDLC is its ability to mix half-duplex secondary stations with full-duplex primary stations on four-wire circuits, thus reducing the cost of dedicated facilities.Intel used SDLC as a base protocol for BITBUS, still popular in Europe as fieldbus and included support in several controllers (i8044/i8344, i80152). The 8044 controller is still in production by third party vendors. Other vendors putting hardware support for SDLC (and the slightly different HDLC) into communication controller chips of the 1980s included Intel, Zilog, Motorola, and National Semiconductor. As a result, a wide variety of equipment in the 1980s used it and it was very common in the mainframe centric corporate networks which were the norm in the 1980s. The most common alternatives for SNA with SDLC were probably DECNET with DDCMP, BDLC, and ARPANET with IMPs.".
- Synchronous_Data_Link_Control wikiPageExternalLink Synchronous_Data_Link_Control_and_Derivatives.
- Synchronous_Data_Link_Control wikiPageExternalLink www.bitbus.org.
- Synchronous_Data_Link_Control wikiPageExternalLink ibmsj1501C.pdf.
- Synchronous_Data_Link_Control wikiPageID "476943".
- Synchronous_Data_Link_Control wikiPageLength "4260".
- Synchronous_Data_Link_Control wikiPageOutDegree "28".
- Synchronous_Data_Link_Control wikiPageRevisionID "674789916".
- Synchronous_Data_Link_Control wikiPageWikiLink ANSI.
- Synchronous_Data_Link_Control wikiPageWikiLink ARPANET.
- Synchronous_Data_Link_Control wikiPageWikiLink Advanced_Data_Communication_Control_Procedures.
- Synchronous_Data_Link_Control wikiPageWikiLink American_National_Standards_Institute.
- Synchronous_Data_Link_Control wikiPageWikiLink Asynchronous_Balanced_Mode.
- Synchronous_Data_Link_Control wikiPageWikiLink BDLC.
- Synchronous_Data_Link_Control wikiPageWikiLink BITBUS.
- Synchronous_Data_Link_Control wikiPageWikiLink Category:Link_protocols.
- Synchronous_Data_Link_Control wikiPageWikiLink Communications_protocol.
- Synchronous_Data_Link_Control wikiPageWikiLink Computer.
- Synchronous_Data_Link_Control wikiPageWikiLink Current_loop.
- Synchronous_Data_Link_Control wikiPageWikiLink DECNET.
- Synchronous_Data_Link_Control wikiPageWikiLink DECnet.
- Synchronous_Data_Link_Control wikiPageWikiLink De_facto.
- Synchronous_Data_Link_Control wikiPageWikiLink Duplex_(telecommunications).
- Synchronous_Data_Link_Control wikiPageWikiLink Fieldbus.
- Synchronous_Data_Link_Control wikiPageWikiLink Four-wire_circuit.
- Synchronous_Data_Link_Control wikiPageWikiLink Full-duplex.
- Synchronous_Data_Link_Control wikiPageWikiLink Half-duplex.
- Synchronous_Data_Link_Control wikiPageWikiLink High-Level_Data_Link_Control.
- Synchronous_Data_Link_Control wikiPageWikiLink IBM.
- Synchronous_Data_Link_Control wikiPageWikiLink IBM_Systems_Network_Architecture.
- Synchronous_Data_Link_Control wikiPageWikiLink Intel.
- Synchronous_Data_Link_Control wikiPageWikiLink Interface_Message_Processor.
- Synchronous_Data_Link_Control wikiPageWikiLink Interface_Message_Processors.
- Synchronous_Data_Link_Control wikiPageWikiLink International_Organization_for_Standardization.
- Synchronous_Data_Link_Control wikiPageWikiLink Motorola.
- Synchronous_Data_Link_Control wikiPageWikiLink National_Semiconductor.
- Synchronous_Data_Link_Control wikiPageWikiLink Point-to-multipoint_communication.
- Synchronous_Data_Link_Control wikiPageWikiLink Point-to-multipoint_communication_(telecommunications).
- Synchronous_Data_Link_Control wikiPageWikiLink Point-to-point_(telecommunications).
- Synchronous_Data_Link_Control wikiPageWikiLink Systems_Network_Architecture.
- Synchronous_Data_Link_Control wikiPageWikiLink Two-wire_circuit.
- Synchronous_Data_Link_Control wikiPageWikiLink Zilog.
- Synchronous_Data_Link_Control wikiPageWikiLinkText "Bisync".
- Synchronous_Data_Link_Control wikiPageWikiLinkText "SDLC".
- Synchronous_Data_Link_Control wikiPageWikiLinkText "Synchronous Data Link Control".
- Synchronous_Data_Link_Control hasPhotoCollection Synchronous_Data_Link_Control.
- Synchronous_Data_Link_Control wikiPageUsesTemplate Template:Citation_needed.
- Synchronous_Data_Link_Control wikiPageUsesTemplate Template:Cite_book.
- Synchronous_Data_Link_Control wikiPageUsesTemplate Template:Reflist.
- Synchronous_Data_Link_Control subject Category:Link_protocols.
- Synchronous_Data_Link_Control hypernym Protocol.
- Synchronous_Data_Link_Control type Article.
- Synchronous_Data_Link_Control type Software.
- Synchronous_Data_Link_Control type Article.
- Synchronous_Data_Link_Control type Protocol.
- Synchronous_Data_Link_Control comment "Synchronous Data Link Control (SDLC) is a computer communications protocol. It is the layer 2 protocol for IBM's Systems Network Architecture (SNA). SDLC supports multipoint links as well as error correction. It also runs under the assumption that an SNA header is present after the SDLC header. SDLC was mainly used by IBM mainframe and midrange systems; however, implementations exist on many platforms from many vendors.".
- Synchronous_Data_Link_Control label "Synchronous Data Link Control".
- Synchronous_Data_Link_Control sameAs Synchronous_Data_Link_Control.
- Synchronous_Data_Link_Control sameAs Synchronous_Data_Link_Control.
- Synchronous_Data_Link_Control sameAs Synchronous_Data_Link_Control.
- Synchronous_Data_Link_Control sameAs Synchronous_Data_Link_Control.
- Synchronous_Data_Link_Control sameAs Synchronous_Data_Link_Control.
- Synchronous_Data_Link_Control sameAs Synchronous_Data_Link_Control.
- Synchronous_Data_Link_Control sameAs Synchronous_Data_Link_Control.
- Synchronous_Data_Link_Control sameAs m.02f5w5.
- Synchronous_Data_Link_Control sameAs SDLC.
- Synchronous_Data_Link_Control sameAs SDLC.
- Synchronous_Data_Link_Control sameAs Q1517778.
- Synchronous_Data_Link_Control sameAs Q1517778.
- Synchronous_Data_Link_Control wasDerivedFrom Synchronous_Data_Link_Control?oldid=674789916.
- Synchronous_Data_Link_Control isPrimaryTopicOf Synchronous_Data_Link_Control.