Nofootnotes date October 2008 Two other uses a telecommunication term the American computer storage data storage company Datalink Corporation the Open System Interconnection model second layer Datalink layer In telecommunication a datalink is the means of connecting one location to another for the purpose of transmitting and receiving information. It can also refer to a set of electronics assemblies, consisting of a transmitter and a receiver two pieces of data terminal equipment and the interconnecting data telecommunication circuit . These are governed by a link protocol enabling digital data to be transferred from a data source to a data Sink disambiguation sink . There are at least three types of basic datalink configurations that can be conceived of and used Simplex communication s, most commonly meaning all communications in one direction only. Half duplex communications, meaning communications in both directions, but not both ways simultaneously. Duplex telecommunications Duplex communications , communications in both directions simultaneously. In civil aviation , a datalink system known as Controller Pilot DataLink Communications is used to send information between aircraft and air traffic control lers when an aircraft is too far from the ATC to make voice radio communication and radar observations possible. Such systems are used for aircraft crossing the Atlantic and Pacific oceans. One such system, used by NavCanada and NATS over the North Atlantic uses a five digit datalink sequence number which is confirmed between air traffic control and the pilots of the aircraft .... In military aviation, the meaning of datalink is somewhat different it carries weapons targeting ... full duplex or half duplex datalink is used to send control system control signals , and to receive telemetry . See also ACARS Tactical Data Links Space probe Deep Space Network Unmanned Aircraft ... Data transmission Category Telecommunications terms cs Datov linka de Datenlink es Enlace de datos ... more details
Merge to TADIL A discuss Talk TADIL A Link 11 MIL STD 6011 discuss Talk MIL STD 6011 Merger proposal date December 2010 In telecommunication , a tactical data information link A TADIL A is a netted datalinklink in which one unit acts as a net control station and interrogates each unit by roll call. Once interrogated, that unit transmits its data to the net. This means that each unit receives all the information transmitted. This is a direct transfer of data and no relaying is involved. FS1037C MS188 Telecomm stub Category Telecommunications ... more details
small US Naval Network and Space Operations Command small Definition A Tactical DataLink TDL uses a datalink standard in order to provide communication via radio waves or cable used by the Military ... per DISA guidance and is now more commonly seen as Tactical DataLink TDL . Tactical datalink character ... as Message Format Transmission Format . TDL standards in NATO In NATO Tactical DataLink Standards are being developed by the DataLink Working Group DLWG of the Information Systems Sub Committee ... Communi br cation Gene br ration Comments 1 5501 NATO datalink between br Air Defence Main Control Centres Link 1 br Tactical Data Exchange for Air Defence Point to Point 1st br S Series Ground Link between NADGE entities limited and not secure 2 Radar to Control Centre DataLink 1st Cancelled includes in Link 1 3 Control Centre to higher HQ Data Links SHOC Early Warning System Point to Point 1st ... 4 5504 Ground to Air DataLinkLink 4 br TDL for the Control of Military aircraft Point to Point 1st ... 6 5506 br Draft Missile Base to Control Centre LinkLink 6 br NADGE Link SAM Automatic DataLink Point ... 1 9 SOC Military airbase Airbase Link 1st 10 5510 Ship Ship LinkLink 10 Maritime br Tactical Data ... LinkLink 11 br Maritime Tactical Data Exchange Broadcast 2nd br M Series Compatible to US TADIL A to be operated in the HF & NATO UHF RF bands 11B 5511 br Vol. II Link 11B br Tactical Data Exchange ... to replace Link 1 5601 Standard for Interface computing Interface of Data Links 1, 11, 11B, and 14 trough a Data buffer buffer see AdalP 12 5602 Standard Interface for Multiple Platform Link Evaluation ... 11B and tactical data systems employing Link 16 MIL STD 6020, DoD Interoperability Standard Data Forwarding ... Message Specification Broadcast 2nd, M Series Interim DataLink Standard to be replaced by Link 16 SADL Situational Awareness DataLink SADL Situational Awareness DataLink Broadcast 1st, K Series br 2nd, K J Series Datalink adopted from Enhanced Position Location Reporting System EPLRS to provide ... more details
Unreferenced date December 2009 Orphan date February 2009 In the STREAMS computer network ing architecture, the Data Link Provider Interface is an interface that a network device driver implements. The interface abstracts away low level details of the hardware and networking protocols, and provides error free delivery of bits over a communications network. It corresponds to the Data link layer Data Link Layer of the 7 layer OSI model . Category System V Category Unix Category Application programming interfaces Category Inter process communication Network software stub ... more details
Unreferenced stub auto yes date December 2009 Context date October 2009 The Open DataLink Interface ODI , developed by Apple Computer Apple and Novell , serves the same function as Microsoft and 3COM s Network Driver Interface Specification NDIS . Originally, ODI was written for NetWare and Apple Macintosh Macintosh environments. Like NDIS, ODI provides rules that establish a vendor neutral interface between the protocol stack and the adapter driver. It resides in Layer 2, the DataLink layer, of the OSI model . This interface also enables one or more network drivers to support one or more protocol stack s. See also Network Driver Interface Specification NDIS Uniform Driver Interface UDI Universal Network Device Interface UNDI PC TCP Packet Driver Category Computer networks Compu stub de Open Datalink Interface ja Open DataLink Interface pl Open DataLink Interface ... more details
In the OSI model OSI computer network networking model, DataLink Control DLC is the service provided by the datalink layer . Network interface card s have a DLC address that identifies each card for instance, Ethernet and other types of cards have a 48 bit MAC address built into the cards firmware when they are manufactured. There is also a network protocol with the name DataLink Control. It is comparable to better known protocols such as TCP IP or AppleTalk . DLC is a transport protocol used by IBM IBM Systems Network Architecture SNA mainframe computer mainframe computers and peripherals and compatible equipment. In computer networking, it is typically used for communications between network attached printers, computers and servers, for example by HP in their JetDirect print servers . While it was widely used up until the time of Windows 2000 , the DLC protocol is no longer included in Windows XP . It is currently available for download. ref http www.microsoft.com downloads details.aspx?familyid f5a88f75 4e05 4fba bf13 2cd53d023786 DLC Protocol for Windows XP ref References reflist External links http publib16.boulder.ibm.com doc link en US a doc lib aixprggd progcomc dlc ovw.htm Generic DLC Environment Overview http www.microsoft.com technet prodtechnol windows2000serv reskit prork prcj ibm wcro.mspx?mfr true Microsoft DLC protocol in Windows 2000 Category OSI protocols de DataLink Control tr DataLink Control ... more details
A datalink connection identifier DLCI is a Frame Relay 10 bit wide link local virtual circuit identifier used to assign frames to a specific Virtual circuit Permanent and switched virtual circuits in ATM.2C frame relay.2C and X.25 PVC or Virtual circuit Permanent and switched virtual circuits in ATM.2C frame relay.2C and X.25 SVC . Frame Relay networks use DLCIs to Statistical multiplexing statistically multiplex frames. DLCIs are preloaded into each switch and act as road signs to the traveling frames. ref cite web title DLCI s url http www.infocellar.com networks frame relay dlci.htm accessdate 22 March 2011 ref The standard allows the existence of 1024 DLCIs, however only numbers from 16 to 991 are available for end users equipment. The rest are reserved for various management purposes. ref cite web url http www.dcbnet.com notes framerly.html title What is Frame Relay accessdate 2007 09 18 ref References references Category Link protocols telecomm stub de DataLink Connection Identifier es DataLink Connection Identifier fr Datalink connection identifier ... more details
refimprove date October 2009 OSIModel The datalink layer is layer 2 of the seven layer OSI model of computer ... . The datalink layer is the protocol layer that transfers data between adjacent network nodes in a wide ... link layer provides the functional and procedural means to transfer computing transfer data between ... in the physical layer . Examples of datalink protocols are Ethernet for local area networks multi .... The datalink layer is concerned with local delivery of Frame networking frames between devices on the same LAN. Datalink frames, as these protocol data units are called, do not cross the boundaries ... datalink protocols to focus on local delivery, addressing, and media arbitration. In this way, the data ... occur. Datalink protocols specify how devices detect and recover from such collisions, and may ... group to which the address belongs. The datalink thus provides data transfer across the physical link. That transfer can be reliable or unreliable many datalink protocols do not have acknowledgments of successful Data frame frame reception and acceptance, and some datalink protocols might not even ..., such as IEEE 802 local area networks, the datalink layer is described in more detail with media ...., as well as with some non 802 MAC layers such as FDDI . Other datalink layer protocols, such as HDLC ... cables , the datalink layer is divided into three sub layers application protocol convergence ..., the datalink layer protocols respond to service requests from the network layer and they perform ... mode transmission Sublayers of the datalink layer The datalink layer has two sublayers logical link ... link control sublayer The uppermost sublayer, LLC, multiplexes protocols running atop the datalink ... addressing and control of the datalink. It specifies which mechanisms are to be used for addressing ... can unambiguously distinguish stuffed bits from normal bits. List of datalink layer services Encapsulation ... layer . Datalink layer error control i.e. retransmission of erroneous packets is provided ... more details
DataLink Switching DLSw is a tunneling protocol designed to tunnel unroutable, non IP based protocols such as IBM Systems Network Architecture SNA and NetBIOS Frames protocol NBF over an IP network. DLSw was initially documented in IETF RFC 1434 in 1993. In 1995 it was further documented in the IETF RFC 1795. DLSw version 2 was presented in 1997 in IETF RFC 2166 as an improvement to RFC 1795. Cisco Systems has its own proprietary extensions to DLSw in DLSw . According to Cisco, DLSw is 100 IETF RFC 1795 compliant but includes some proprietary extensions that can be used when both devices are Cisco. ref cite web url http docwiki.cisco.com wiki DataLink Switching title DataLink Switching DLSw publisher Cisco accessdate 2011 06 16 ref Some organisations are starting to replace DLSw tunneling with the more modern Enterprise Extender EE protocol which is a feature of IBM APPN on z OS systems. Microsoft refers to EE as IPDLC . Enterprise Extender uses UDP traffic at the Transport Layer rather than the Network Layer . ref cite web url http www 1.ibm.com support docview.wss?rs 852&uid swg27006667 title Understanding Enterprise Extender, Part 1 Concepts and Considerations publisher IBM accessdate 2008 09 15 ref Cisco deploy Enterprise Extender on their hardware via the IOS feature known as SNAsW SNA Switch . See also IBM Systems Network Architecture Microsoft Host Integration Server Synchronous DataLink Control References reflist External links http www.faqs.org rfcs rfc1434.html RFC 1434 DataLink Switching Switch to Switch Protocol http www.faqs.org rfcs rfc1795.html RFC 1795 DLSw Standard Version 1.0 http www.faqs.org rfcs rfc2166.html RFC 2166 DLSw v2.0 Enhancements Category Tunneling protocols de DataLink Switching ... more details
The VHF DataLink or VHF Digital Link VDL is a means of sending information between aircraft and ground stations and in the case of VDL Mode 4 other aircraft . Aeronautical VHF data links use the band ... Services. There is an Airline Industry AEEC standard for an ACARS VHF datalink installed on approximately ... Pilot DataLink Communications CPDLC . ICAO VDL Mode 1 The ICAO AMCP defined this Mode for validation purposes. It was the same as VDL Mode 2 except that it used the same VHF link as VHF ACARS ... Network ATN standard which specifies an end to end data protocol to be used over multiple air ground and ground subnetworks including VDL. The VDL Mode 2 Link Layer is made up of two sublayers, a datalink service and a media access control MAC sublayer. The datalink protocol is based ... of VDL. It has been implemented in a Eurocontrol Link 2000 program and is specified as the primary link in the recently adopted EU Single Sky rule requiring all aircraft flying in Europe to be equipped ... of coverage. The ICAO standard for the VDL Mode 2 specifies three layers, the subnetwork, link ... link establishment to a ground station and defines an addressing scheme for ground stations ... Shift Keying providing a data rate of 31.5 kilobit second. This is the highest data rate that can be achieved ... providing aircraft with both data and digitized voice communications that was defined by the US ... than VDL Mode 2. The data and digitized voice packets go in Time Division Multiple Access TDMA slots ... Mode 4 The ICAO standard for VDL Mode 4 specifies a protocol enabling aircraft to exchange data with ground ... was to provide a VHF frequency physical layer for ADS B transmissions. However it was overtaken as the link for ADS B by the Mode S radar link operating in the 1090 MHz band which was selected as the primary link by the ICAO Air Navigation Conference in 2003. The VDL Mode 4 medium can also be used ... implementations of ADS B will use the Mode S link and of CPDLC will use VDL Mode 2. ref cite web ... more details
Refimprove date December 2008 DataLink Solutions DLS is a joint venture entity that was created in 1996 between GEC Marconi Hazeltine now known as BAE Systems Electronics and Integrated Solutions BAE Systems and Rockwell Collins for the purpose of developing, manufacturing and supporting the Joint Tactical Information Distribution System JTIDS . DLS is headquartered in Cedar Rapids, IA and also has facilities in Wayne, NJ . The company has the extensive contract experience in JTIDS Class 2 2H 2M, the MIDS Fighter DataLink FDL and the MIDS Low Volume Terminal LVT 1 , with over 275 million in contracts to date and production deliveries started for MIDS LVT and FDL terminals. In June 2006 DataLink Solutions DLS and Thales Group entered into an agreement to cooperatively produce and sell MIDS Multi functional Information Distribution System MIDS terminals for the Joint Tactical Radio System JTRS . DLS is leading the development effort on MIDS JTRS under an 82 million product improvement program contract. In August 2007 DataLink Solutions received a 28 million order for Multifunctional Information Distribution System Low Volume Terminals MIDS MIDS LVT from the Space and Naval Warfare Systems Command SPAWAR in San Diego. The terminals will be installed in the U.S. Navy F A 18 and EA 6B , U.S. Air Force F 16 , B 1 Lancer B 1 , B 2 and B 52 as well as other battle elements. External links http www.datalinksolutions.net DataLink Solutions LLC homepage Category Military radio systems Category Avionics companies Category Companies based in Iowa ... more details
Orphan date February 2009 Refimprove date April 2008 merge Common DataLink date October 2010 The Tactical Common DataLink TCDL is a secure datalink being developed by the U.S. military to send secure data and streaming video links from airborne platforms to ground stations. The TCDL can accept data from many different sources, then encrypt , multiplexing multiplex , encode , transmit , demultiplex, and route this data at high speeds. It uses a Ku band K sub u sub narrowband uplink that is used for both payload and vehicle control, and a wideband downlink for data transfer. The TCDL uses both directional and omnidirectional antennas to transmit and receive the K sub u sub band signal. The TCDL was designed for UAV s, specifically the MQ 8B Fire Scout , as well as manned non fighter environments. The TCDL transmits radar, imagery, video, and other sensor information at rates from 1.544 Mb s to 10.7 Mb s over ranges of 200 km. It has a bit error rate of 10 6 with COMSEC and 10 8 without COMSEC. It is also intended that the TCDL will in time support the required higher CDL rates of 45, 137, and 274 Mb s. References references http www.l 3com.com csw product specs Airborne TCDLAir.asp L 3 business segments http www.assconline.co.uk documents ASSC Study Application MPEG2 Digital Video Compression Standard.pdf Avionics Systems Standardisation Committee Category Secure communication ... more details
Orphan date February 2009 merge Tactical Common DataLink date October 2010 Common DataLink CDL is a secure U.S. military communications protocol . It was established by the U.S. Department of Defense in 1991 as the military s primary protocol for image ry and signals intelligence ref http directory.eoportal.org auth 8127 pres TacSat2Roadrunner.html Accessed 28 June 2007. ref ref http www.l 3com.com csw L 3 Communication Systems West Homepage Bot generated title ref CDL operates within the Ku band at data rates up to 274 Mb s. CDL allows for full duplex data exchange. The FY06 Authorization Act Public Law 109 163 requires use of CDL for all imagery, unless waiver is granted. The primary reason waivers are granted is from the inability to carry the 300 pound radios on a small 30 pound aircraft. Emerging technology expects to field a 2 pound version by the end of the decade 2010 . References references Use dmy dates date October 2010 Category Military communications US mil stub ... more details
Synchronous DataLink 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. ref harv Odom 2004 . ref 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 . Citation needed date June 2008 In 1975, IBM developed the first bit oriented protocol, SDLC, ref name PCLT http pclt.cis.yale.edu pclt COMM SDLC.HTM PC Lube and Tune , accessed 15. October 2009. ref from work done for IBM in the early 1970s. ref name hist harv Friend 1988 p 188 . ref This de facto standard has been adopted by ISO as High Level DataLink Control HDLC in 1979 ref name hist 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 ... Data and computer communications networking and internetworking year 2001 publisher CRC Press location Indianapolis isbn 0 849 30928 X External links http docwiki.cisco.com wiki Synchronous DataLink Control and Derivatives Cisco page on Synchronous DataLink Control and Derivatives http www.bitbus.org Bitbus community site. Category Link protocols de Synchronous DataLink Control es Synchronous DataLink Control ja Synchronous DataLink Control pl Synchronous DataLink Control pt Synchronous DataLink Control sl SDLC ... 1988 p 191 . ref SDLC operates independently on each communications link, and can operate on point to point ... Data Communications edition 2nd Edition year 1988 publisher Howard W. Sams & Company location ... more details
unreferenced date June 2011 The DataLink Connector DLC is the multi pin diagnostic connection port for automobiles and trucks used to interface a scan tool automotive scan tool with the Electronic Control Unit control modules of a given vehicle and access On Board Diagnostics and live data streams. The OBD II DLC post 1996 vehicles is usually located under the instrument panel on the driver side, though there are several exceptions. Prior to 1996, many DLC s were in the engine compartment, usually near the fuse block. Also, prior to 1996, there was no standardization for these connectors, and each manufacturer had its own shape with a unique pin arrangement. After 1996, many manufacturers retained their proprietary connectors in addition to the OBD II interface, because OBD II ports are only required to transmit vehicle emissions control emission related codes and data. References Reflist Category Automotive electronics automotive tech stub ... more details
orphan date October 2009 Wikify date October 2009 High Frequency DataLink High Frequency DataLink HFDL is an ACARS communications media used to exchange data such as Aeronautical Operational Control AOC messages, Controller Pilot DataLink Communication CPDLC messages and Automatic Dependent Surveillance ADS messages between aircraft end systems and corresponding ground based HFDL ground stations. Using the unique propagation characteristics of high frequency radio waves, the ground stations provide datalink communications to properly equipped aircraft operating anywhere in the world. The result, pilots can always communicate with someone on the ground. Avionics Supporting HFDL To use the service, an aircraft only needs a Communications Management Unit CMU , or equivalent and an HFDL data radio. The CMU is an airborne communications router that interfaces with many aircraft communications systems including SATCOM, VHF, HFDL, FMS and others. Global Coverage Today, HFDL is an air ground datalink standard with coverage in virtually every corner of the globe, approximately convert 168000000 sqmi km2 where aircraft are never out of touch both in the air and on the ground. Evolving Technology The HFDL network and avionics are a continuing evolution. Recent innovations in avionics software developed by both Honeywell and Collins have enhanced performance and contribute to the service s outstanding message success rates. There is continued investment in the HFDL infrastructure and there is a long term strategy in place to ensure its success. ARINC have been quoted as saying that the system and its use have grown at rates above 20 for each of the past ten years and it now supports ..., so data can continue to be decoded when voice is unusable. This was proven during the 2003 Halloween ..., the data radios constantly scan and select the most efficient frequency to use making operation seamless for flight crews. Flight planning providers ARINC Category Meteorological data and networks ... more details
Multifunction Advanced DataLink MADL is a future data waveform to provide secure data linking technology between stealth aircraft. It began as a method to coordinate between F 35 aircraft the Joint Strike Fighter , but HQ Air Combat Command wants to expand the capabiltiy to coordinate future USAF strike forces of all AF stealth aircraft, including the B 2, F 22, and unmanned systems. MADL is expected to provide needed throughput, latency, frequency hopping and anti jamming capability with phased Array Antenna Assemblies AAAs that send and receive tightly directed radio signals. ref http www.govcomm.harris.com solutions products 000088.asp Harris Multifunction Advanced DataLink MADL ref The Office of the Undersecretary of Defense for Acquisition, Technology and Logistics directed the Air Force and Navy to integrate MADL among the F 22, F 35 and B 2, to one another and to the rest of network. Platforms The F 22 Raptor F 22 MADL upgrade was cancelled in 2010 ref http www.airforcetimes.com news 2011 03 air force raptor madl upgrade 033111w ref The F 35 Lightning II F 35 will have MADL built in B 2 Spirit See also Link 16 Multifunctional Information Distribution System References reflist External links cite web url http www.aviationweek.com aw generic story generic.jsp?channel dti&id news DTINETS.xml&headline F 22 20and 20F 35 20Suffer 20From 20Network 20Gaps title F 22 and F 35 Suffer From Network Gaps date 2007 12 11 work Aviation Week publisher The McGraw Hill Companies, Inc. first Bill last Sweetman cite web url http www.af.mil news story.asp?id 123143663 title Center team works to connect new fighters, bomber date 2009 4 9 publisher United States Air Force first Chuck last Paone cite web url http integrator.hanscom.af.mil 2008 November 11132008 11132008 15.htm title To ensure increased combat effectiveness... first John last Reed work The Integrator date 2008 11 07 publisher U.S. 66th Air Base Wing Public Affairs Office cite web url http www.afmc.af.mil news story.asp ... more details
Controller Pilot DataLink Communications CPDLC , also referred to as Controller Pilot DataLink CPDL , is a method by which air traffic controller s can communicate with pilots over a datalink system. Necessity The standard method of communication between an air traffic controller and a pilot is voice radio, using either Very high frequency VHF bands for line of sight communication or High frequency ... to cope with increased demands on Air Traffic Control, and datalink based communications offers a possible ... interface for sending and receiving CPDLC messages. Controller pilot datalink communication CPDLC is a means of communication between controller and pilot, using datalink for ATC communication ... system to use datalink to forward a CPDLC message to another ground system. The sequence of messages ... details.cfm?item id 110 title MITRE CAASD & 124 & 124 Projects Controller Pilot DataLink Communications ... . The VHF DataLink VDL Mode 2 networks operated by ARINC and SITA are used to support the European ... Eurocontrol Trial Air Ground Datalink trials in 1995 including NEAN VHF DataLink VDL Mode 4 , today both ATN VHF DataLink VDL Mode 2 and FANS 1 A services are supported. More than 40 major airlines ... http www.flitepartners.com Controller Pilot DataLink Communications CPDLC.htm CPDLC Installation STC ... PDF page 4 Dead link date October 2010 bot H3llBot ref , the number of pilots tuned to a particular ... at either end and the flexibility of use. The CPDLC application provides air ground data ... or acceptance. Closure of the dialogue does not necessarily terminate the link, since there can ... has three primary functions the exchange of controller pilot messages with the current data authority, the transfer of data authority involving current and next data authority, and downstream clearance delivery with a downstream data authority. Simulations carried out at the Federal Aviation ... provided by the Inmarsat Data 2 Classic Aero service. The ICAO Doc 9705 compliant ATN CPDLC system ... more details
IPstack High Level DataLink Control HDLC is a Bit oriented protocol bit oriented Synchronization computer science synchronous datalink layer Communications protocol protocol developed by the International ... Mode ARM are rarely used. History HDLC is based on IBM s Synchronous DataLink Control SDLC protocol ... Modes Synchronous DataLink Control Synchronous DataLink Control SDLC was originally designed to connect ... frames, or U frames , are used for link management, and can also be used to transfer user data. They exchange ... are ADD RSET DataLink Test Commands & Responses are ADD TEST Request Disconnect. Responses are ADD ... standards Category Networking standards ca HDLC cs HDLC da HDLC de High Level DataLink Control es High Level DataLink Control eu HDLC fr High Level DataLink Control hr HDLC it High Level DataLink Control he High level DataLink Control mk HDLC ja High Level DataLink Control no HDLC pl High Level DataLink Control pt HDLC ru HDLC fi HDLC sv HDLC tr HDLC uk HDLC zh ... stack as LAPF and into the ISDN protocol stack as Link Access Procedures, D channel LAPD . HDLC was the inspiration for the IEEE 802.2 Logical Link Control LLC protocol, and it is the basis for the framing ... cross connect system DXX for destination of Trunk. Framing HDLC data frame frames can be transmitted ... link, a frame delimiter is continuously transmitted on the link. Using the standard NRZI encoding .... Since the flag sequence could appear in user data, such sequences must be modified during transmission ... this has occurred so that the original data stream can be restored before it is passed to higher ... 11111 in the data. The receiver, when detects these 11111 in the data, removes a 0 added by the transmitter ... consecutive 1 bits appear in the transmitted data, the data is paused and a 0 bit is transmitted ... data. If the following bit is a 1 bit, the receiver has found a flag. This also assuming NRZI with transition ... transmission of data, and one transition per 7 bit times during transmission of flag, so the receiver ... more details
unreferenced date July 2011 Orphan date February 2009 High Speed Voice and DataLink HVDL is a high speed voice and data provisioning method that allows telcos and ISPs to provide up to three voice channels and data up to 1Mbit s on a copper pair over extremely long loops. Most DSL technologies Etherloop in particular work well up to about 18044 feet 5.5 km on a 24 AWG copper pair. Reach DSL supports lengths up to approximately 32808 feet 10 km . HVDL has a theoretical maximum loop length of approximately 112,000 feet approximately 34 km . This kind of distance would require repeater s and would probably only support a connection of 128 kbit s. The ideal speed for this service is 512 kbit s or 384 kbit s. This is programmed directly from the COT line card . The signal is sent from the telco s central office as an Ethernet style signal and is demuxed at the customer s premises by a Plain old telephone service POTS Ethernet splitter. The box itself contains all the circuitry needed to split the data and voice channels. An Ethernet cable is run directly to the customer s PC or router, and the POTS lines within the home are connected to the POTS terminals inside the CPE unit. The CPE unit is powered from the telco s central office , and will continue to work during a power outage, and supports failover to POTS. See also http www.charlesindustries.com hvdl.htm HVDL vendor Category Communication circuits Category Digital Subscriber Line ... more details
orphan date July 2010 S LINK , for simple link interface , is a high performance data acquisition standard developed at CERN for collecting information from particle accelerator s and other sources. Unlike similar systems, S LINK is based on the idea that data will be collected and stored by computers at both ends of the link, as opposed to a dumb devices collecting data to be stored on a smart computer. Having a full computer at both ends allows S LINK to be very thin, primarily defining the logical standards used to feed data at high speed from the motherboards to the link hardware interfaces. S LINK started in 1995 in response to problems collecting data from the new ATLAS experiment at CERN. ATLAS was extensively instrumented with stand alone computers, which sent data via a variety of methods to be collected on various servers. S LINK was seen as a way to provide a single mechanism for forwarding the data from the collection to the link hardware with extremely low latency. Generally the S LINK hardware provided functionality that would normally be provided by networking or other drivers running on the host Central processing unit CPU , thereby tying up cycles and introducing delays. S LINK used a 32 bit bus running up to 66 MHz, allowing for throughout up to 264 megabyte MB s. The link side was typically connected to optical fibre for transmission to the collecting machines, known as the read out motherboard , or ROMB . Data could also be sent back to the front end motherboard or FEMB , typically for flow control purposes at a much lower speed. External links http hsi.web.cern.ch HSI s link S LINK DEFAULTSORT S Link Category Particle experiments Category Computing acronyms ... more details
Telecommunications Telecommunications linkDatalink Downlink Point to point link Satellite link ...pp move indef wiktionary link links selfref For help creating links in Wikipedia, see Help Contents Links or Help Link selfref For the Wikipedia Manual of Style guidelines on linking, see Wikipedia Manual of Style linking Link, links, linking may refer to TOCright Education Hands On Learning Australia , implements the HOL LiNK program Li teracy and N umeracy K nowledge Entertainment Music Link singer , an American R&B singer Link song Link song , a single by the Japanese band L Arc en Ciel Links 2 3 4 , a 2001 single by Rammstein Link Wray , American rock and roll guitarist WLNK 107. 9 the Link , a radio station in Charlotte, North Carolina Television and film Link film Link film , a 1986 horror movie featuring an orangutan Link TV , an independent American satellite television network Link The Matrix Link The Matrix , a character in Matrix media Link Larkin, a character from the musical Hairspray musical Hairspray Link, the ice age man character in the 1992 American film Encino Man Link Hogthrob , character from The Muppets Video games Link The Legend of Zelda Link The Legend of Zelda ... Pok mon Trozei Pok mon Link , a puzzle game for the Nintendo DS. Known as Pok mon Trozei outside of Europe Organizations Project LINK , a United Nations project to build global macroeconomic models LINK UK , an ATM cashpoint network in the United Kingdom The Link organisation , a short lived British organization founded in 1937 to promote Anglo German friendship The Link REIT , a real estate investment ... The Links, Incorporated , an African American female professional service organization Hong Kong Link ... in North Korea LiNK , a human rights advocacy group LINKS, a St John Ambulance in England and Wales LINKS units collection of student run St John Ambulance units Link , a facility for interlibrary ... Link 1904 1981 , American inventor and engineer Johann Heinrich Friedrich Link 1767 1850 , German naturalist ... more details
The Link may refer to The Link retailer , a mobile phone retailer in the United Kingdom The Link newspaper , a student newspaper at Concordia University in Canada The Link album The Link album , by French death metal band Gojira The Link organisation , an Anglo German friendship organisation of the 1930s The Link organization , a community based nonprofit organization in Minneapolis, Minnesota The Link REIT , a Hong Kong real estate investment trust The Link Homeschool Newspaper , published by Mary Leppert Darwinius &ndash 47 million year old fossil link between prosimians and simians The Link is the newsletter of the organization Americans for Middle East Understanding The Link , a division of NZ Bus that operates bus services in Auckland s central city See also Link disambiguation The Linc disambiguation Disambig ... more details
Deleted image removed image LINK Plus search engine.png right thumb 320px An example query using the LINK search engine. Link or LINK pronounced link plus is a networked catalog of contributed holdings from participating Academic library academic and public libraries in California and Nevada . ref cite book last Aggarwal first Anil title Web Based Learning and Teaching Technologies Opportunities and Challenges year 2000 publisher Idea Group Inc isbn 9781878289605 oclc 43095789 page 21 ref Through Link , library patrons can check out a book from any participating library via their own local library and have it delivered to the library of their choice at no cost. Participating libraries As of August 2011 , the participating libraries are ref cite web title Member Libraries url http csul.iii.com screens members.html publisher Link accessdate August 13, 2011 ref Alameda County Library Alliant International University Azusa Pacific University Berkeley Public Library Biola University California State Polytechnic University, Pomona, Library Cal Poly Pomona Library California State Polytechnic University, Pomona Cal Poly Pomona California Polytechnic State University Cal Poly San Luis Obispo California State University, Dominguez Hills CSU Dominguez Hills California State University, East Bay CSU East Bay formerly CSU Hayward California State University, Fresno CSU Fresno California State University, Long Beach CSU Long Beach California State University, Stanislaus CSU Stanislaus Claremont Colleges Contra Costa County Library Hayward Public Library La Sierra University Livermore Public Library Loma Linda University Loyola Marymount University Mission College Santa Clara, California Mission College Mountain View Public Library Mount St. Mary s College Occidental College Pacific Union College Palo Alto City Library Pleasanton Public Library Point Loma Nazarene University Richmond Public Library Sacramento Public Library Saint Mary s College of California Saint Mary s College San ... more details
The T Link lang no T forbindelsen is a road project under construction in Rogaland , Norway . It consists of the convert 8.9 km adj on sp us long Karm y Tunnel , which will connect the island of Karm y with European route E39 European Route E39 in Tysv r, and a convert 9.8 km adj on sp us section of road from a roundabout in the tunnel north to Haugesund . The project includes the convert 50 m adj on long Tuastad Bridge, the convert 687 m adj on long Husafjell Tunnel and the convert 260 m adj on long Spannavarden Tunnel. ref cite web url http www.vegvesen.no Vegprosjekter tforbindelsen Prosjektinnhald title Prosjektinnhald author Norwegian Public Roads Administration accessdate 9 January 2011 language Norwegian ref Construction work began in the autumn of 2009, with the opening of T forbindelsen planned for 2013. History With the establishment of E39, it was decided that the route would not pass through Karm y, but instead follow a more inner route via Bokn and Tysv r. The Skudeneshavn Randaberg Ferry was at the same time downgraded, and the Mortavika Arsv gen Ferry established as the main connection. Combined with the Rennes y Fixed Link , this gave much shorter ferry times across Boknafjord . The T Link was proposed to allow better access southwards towards J ren , while at the same time providing faster travel time between Koppervik to Haugesund. ref cite web url http www.regjeringen.no nb dep sd dok regpubl stprp 19992000 stprp nr 72 1999 2000 2 1.html?id 203580 title Bakgrunn og m l author Norwegian Ministry of Transport and Communications accessdate 9 January 2011 language Norwegian ref The project is estimated to cost 1.5 billion Norwegian krone NOK and was initially approved by the Parliament of Norway in 2001, which included that 60 of the tolls would be pre collected on the Mortavika Arsv gen Ferry. This gave an annual income of NOK 60 million. The remaining 40 will be collected from the uses as a toll. Financing in 2008 NOK included 405 million in state ... more details
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