
	Where results make sense

Topic: Data Link Control

Related Topics

FoxPro

HMS Amazon (F169)

HMS Amazon

Interval (music)

Black Swan Records

Mathematics of the Western music scale

Vitaly Lazarevich Ginzburg

Philips

Iowa Cubs

Greece Interstate 8A

Manuel I of Portugal

	Data Link Control Emulation: Rapid Prototyping for High-Speed Networks
		We show that DLC emulation is a flexible and general technique that supports a wide range of Data Link Control protocols, and we demonstrate its effectiveness through a case study, where an FDDI adapter is used to provide SMDS connectivity over T1 and T3 links.
		DLC emulation performs protocol conversion at the DLC layer of a single protocol stack, in reference to the OSI protocol layer model [12]; that is, it is defined for an attachment to a single network, and thus differs in concept from bridges or routers that perform protocol conversion between two different networks (protocol stacks).
		DLC emulation has proven in practice to be efficient and effective for rapid-prototyping of high-speed network technologies, providing a fast development cycle and resulting in systems that take advantage of the improved characteristics of new networks in a reliable and cost-effective fashion.
	www.comsoc.org /~ni/private/1998/mar/Serpanos.html (6283 words)

	[No title]
		When a data link control protocol is used, the transmission medium between systems is referred to as a data link.
		Actual path of the data transfer process follows layers 3-2-1 on the sender machine and 1-2-3 on the destination machine, but it is easier to think that two DLL processes data transfer using a data link protocol.
		On reliable channels, such as fiber, the overhead of a heavyweight data link protocol may be unnecessary, but on wireless channels, with their unreliability, it is well worth the cost.
	www.cs.ucla.edu /classes/winter04/cs117/orig/dll.doc (5451 words)

	Data link control method and system for integrated services digital network - Patent 5051992
		After the data link connection has been established between the terminal equipment and the ISDN, the incoming calling operation in the CCP is executed in response to the SETUP message which is sent from the ISDN to the CCP.
		The data transmitted from the terminal equipment 8 and CCP 2 to either one of the channels is received by the ET 5 through the ET 5.
		The data link is established between the ISDN and the terminal equipment 8B-1 by subsequently communicating the CONNECT message (step 38), CONN-ACK message (step 39), SABM message (step 40), and UA message (step 41) between the terminal and the ISDN.
	www.freepatentsonline.com /5051992.html (3946 words)

	HDLC - High Level Data Link Control
		Data is transmitted in the data field, which can vary in length depending upon the protocol using the frame.
		SNRM and SABM frames, for example, are used both to set up logical link between the primary and the secondary station and to inform the secondary station of the mode of operation to be used.
		Prior to any kind of transmission (either between two stations connected by a point to point link or between a primary and secondary station a multidrop link) a logical connection between the two communication parties must be established.
	www2.rad.com /networks/1994/hdlc/hdlc.htm (748 words)

	Synchronous data link control: A perspective
		Data link control requirements are discussed and summarized.
		A generalized structure for a data link control capable of meeting those requirements is presented.
		Synchronous data link control (SDLC) is given as a solution, evolving from the generalized structure, to meet the requirements stated.
	domino.research.ibm.com /tchjr/journalindex.nsf/a3807c5b4823c53f85256561006324be/d0cc751f099c120d85256bfa00685aab?OpenDocument (53 words)

	HDLC: High Level Data Link Control
		The High Level Data Link Control (HDLC) protocol, an ISO data link layer protocol based on the IBM SDLC, is to ensure that data passed up to the next layer has been received exactly as transmitted (i.e error free, without loss and in the correct order).
		If data is flowing in both directions (full duplex), the data frames themselves carry all the information required to ensure data integrity.
		This means that data can continue to flow in situations where there may be long "turn-around" time lags without stopping to wait for an acknowledgement.
	www.javvin.com /protocolHDLC.html (464 words)

	High-Level Data Link Control (HDLC)
		The master station is responsible for initialing for initializing and controlling the link for all other slaves or one slave.
		The primary station is the one who is controlling the entire transmitting all the data to the secondary stations.
		The primary station is responsible for the data link, retraining control of the link at any times, initiating the error recovery procedures, a and transmission flow to and from the primary.
	iris.nyit.edu /~qrahma01/HDLC.html (1738 words)

	Technical Reference: Communications, Volume 1 - writex Subroutine Interface for Data Link Control (DLC) Devices
		Allows application data to be sent using a file descriptor.
		Four types of data can be sent to generic data link control (GDLC).
		Data is transferred using the uiomove kernel service between the application user space and kernel communications I/O buffers (mbufs).
	www.ncsa.uiuc.edu /UserInfo/Resources/Hardware/IBMp690/IBM/usr/share/man/info/en_US/a_doc_lib/libs/commtrf1/writex.htm (529 words)

	[No title] (Site not responding. Last check: 2007-10-18)
		A key function of the data link layer is to encode the occurrence of the flag sequence within user data as a different sequence using bit stuffing as follows.
		The control field of the X.25 LAPB frame is identical to the corresponding HDLC frame with the one-octet length called basic mode, or the optional modes for a two-octet length called extended mode, and the four octet length called super mode.
		Control Field Length (Octets) Sequence Number Length (Bits) Sequence Number Modulus 1 3 8 2 7 128 4 15 32,768 8 31 2,147,483,648 Table 1 HDLC Control Field Lengths and Sequence Number Modulus 3.1 Conclusion Many options are defined in the HDLC standard, and there are many vendor implementations of HDLC.
	iris.nyit.edu /~mpark/HDLC.doc (1651 words)

	Chapter 10: Data Link Control Protocols
		If a data system could not understand the protocols used by another system, there could be no communication between them.
		Synchronous data link protocols are described next, and the author makes a distinction between the three concepts of character-oriented, byte-count-oriented and bit-oriented protocols.
		It is too slow and controlled to give the users the speed they expect and are given by other network methods.
	home.att.net /~s.k.vincent/361_10.htm (1041 words)

	System Management Guide: Communications and Networks - Generic Data Link Control Environment Overview
		Generic data link control (GDLC) is a generic interface definition that provides application and kernel users a common set of commands to control DLC device managers within the operating system.
		DLC device managers perform higher-layer protocols and functions beyond the scope of a kernel device driver.
		Data transfers require a move of data between user and kernel space.
	www.ncsa.uiuc.edu /UserInfo/Resources/Hardware/IBMp690/IBM/usr/share/man/info/en_US/a_doc_lib/aixbman/commadmn/dlc_gdlc.htm (512 words)

	Synchronous Data Link Control (SDLC)and Derivatives
		The primary also sets up and tears down links and manages the link while it is operational.
		IEEE 802.2 is often referred to as the Logical Link Control (LLC).
		The SNA data is carried as user data in Layer 3 X.25 packets.
	www.cisco.com /univercd/cc/td/doc/cisintwk/ito_doc/sdlcetc.htm (1686 words)

	What Is...HDLC (High-level Data Link Control) (a definition) (Site not responding. Last check: 2007-10-18)
		HDLC (High-level Data Link Control) is a group of protocols or rules for transmitting data between network points (sometimes called nodes).
		Variations of HDLC are also used for the public networks that use the X.25 communications protocol and for frame relay, a protocol used in both local area networks and wide area networks, public and private.
		(An X.25 network is one in which packets of data are moved to their destination along routes determined by network conditions as perceived by routers and reassembled in the right order at the ultimate destination.) The X.25 version of HDLC uses peer-to-peer communication with both ends able to initiate communication on duplex links.
	www.cc.jyu.fi /~eerwall/hdlc.html (414 words)

	CEN 4500C - Data Link Control
		Point-to-point links have exactly two nodes attached to them, and so do not require addressing (it is implicit who is sending and who is receiving by the link used).
		Multipoint links require addressing: if there is a distinguished node (a Master or primary station), and all communication that takes place either has it as the source or the destination, then only the address of the undistinguished (Slave or secondary) node need be included.
		Simplex links are often used as parts of a full duplex connection, and may be used for true simplex communication in sensor networks, for monitoring, and in broadcast radio and television.
	www.cise.ufl.edu /~nemo/cen4500/data_link.html (2380 words)

	HDLC - High-level Data Link Control(HDLC),Link Access Procedure Balanced(LAPB) - X.25 (Site not responding. Last check: 2007-10-18)
		The job of the HDLC layer is to ensure that data passed up to the next layer has been received exactly as transmitted (i.e error free, without loss and in the correct order).
		This means that data can continue to flow in situations where there may be long "turnaround" time lags without stopping to wait for an acknowledgement.
		HDLC LAPB is the Link Layer (Level 2 of the OSI model) that is usually used by X.25, the ITU (previously called the CCITT) standard for Packet Switched Networks.
	www.sangoma.com /hdlc.htm (434 words)

	Data Link - Error Control
		Error control is about detecting and correcting for errors that occur during transmission.
		In FEC a large amount of redundant data is sent with the transmission.
		Modulo 128 is commonly used on satellite links due to the long propagation delay.
	vermontel.net /~rickeary/1_Lectures_v1/PL_Data_Link_Error_Control.htm (1255 words)

	High-level data link control packet assembler/disassembler - Patent 4951278
		Although data communication between DCEs of the network is routinely handled by the network operator typically using techniques other than X.25, communication between the individual user system and the respective DCE with which it interfaces to the network is governed by the X.25 or similar protocol.
		In a full duplex link, modems servicing the link support simultaneous transmission in both directions on the link, as a result either of having a four wire circuit or of the ability to support simultaneous transmission on different frequencies in different directions and to disable echo suppressors on a two wire circuit.
		That data packet (as X.25 DCE) is received by the host HPAD, which waits until the next poll for the line/control unit designated as part of the information contained in the received packet and then transmits to the host an SDLC RD response frame for that line/control unit.
	www.freepatentsonline.com /4951278.html (6399 words)

	SDLC: Synchronous Data Link Control by IBM
		The Synchronous Data Link Control (SDLC) protocol, an IBM data link layer protocol for use in the Systems Network Architecture (SNA) environment.
		The data link control Layer provides the error-free movement of data between the Network Addressable Units (NAUs) within a given communication network via the Synchronous Data Link Control (SDLC) Protocol.
		The flow of information passes down from the higher layers through the data link control Layer and is passed into the physical control Layer.
	www.javvin.com /protocolSDLC.html (510 words)

	Overview of Data Link Control
		This driver enables the computer to communicate with other computers running the DLC protocol stack, such as IBM mainframes; and network peripherals, such as print devices that use a network adapter to connect directly to the network.
		Windows 2000–based DLC contains an 802.2 logical link control (LLC) finite state machine, which is used when transmitting and receiving type 2 connection-oriented frames.
		Because of this, DLC cannot be used for communication with TDI client applications such as the Windows 2000 redirector and server.
	www.microsoft.com /resources/documentation/Windows/2000/server/reskit/en-us/intwork/indf_dlc_zrgk.asp?frame=true (341 words)

	The DECT pages: The Data Link Control layer
		In the Data Link Control layer of the DECT standard (EN 300 175-4) the physical world is left behind and the data communications realm is entered.
		This is also the layer in which the difference between control data (from the Network layer) and the user data (from the U-plane), e.g.
		The data link services provided to the Network layer, and therby the C-plane, are fairly simple.
	www.xs4all.nl /~skydiver/DECT/details/DLC.html (384 words)

	Synchronous Data Link Control Info
		The Data Link Control layer is the lower of the two layers that make up the Path Control Network.
		On a half-duplex link, the idle condition is all 1 bits (mark).
		The fifth bit in the CONTROL field, known as the POLL or FINAL bit, may be set to a value of 1 or 0.
	www.fratec.com /FAQ/NFO/NFO_WAN_013.HTML (1937 words)

	No Title
		For a given communications link, a is determined by propagation delay (depends on distance) and the data transmission time (depends on maximum data rate and size of frame).
		Usually error control and flow control on a per device basis (transparent to channel) and not for TDM channel.
		If we have flow control for the entire channel, then if one station were not able to receive data, all others will be penalized.
	www.rhsmith.umd.edu /is/aqiuol/726s97/mod3cc.html (2103 words)

	data link control - a Whatis.com definition - see also: DLC
		DLC also is an abbreviation for digital loop carrier.
		DLC (data link control) is the service provided by the data link layer of function defined in the Open Systems Interconnection (OSI) model for network communication.
		The Data Link layer is responsible for providing reliable data transfer across one physical link (or telecommunications path) within the network.
	searchnetworking.techtarget.com /sDefinition/0,,sid7_gci213881,00.html (386 words)

	Bi Sync Protocol - Data Link Control - Martin Baker
		Mixed with the character codes are a number of codes for data link control, some of these control sequences are one character long and some are two characters long.
		Where I can, I have put links to Amazon for books that are relevant to the subject, click on the appropriate country flag to get more details of the book or to buy it from them.
		Where I can, I have put links to Amazon for commercial software, not directly related to the software project, but related to the subject being discussed, click on the appropriate country flag to get more details of the software or to buy it from them.
	www.euclideanspace.com /coms/protocol/bi_sync/dlc (523 words)

	Technical Reference: Communications, Volume 1 - writex Subroutine Interface for Data Link Control (DLC) Devices
		A maximum write data size is passed back to the user at DLC_ENABLE_SAP completion and at DLC_START_LS completion for this purpose.
		This is a pointer to the dlc_io_ext extended I/O structure for the writex subroutine.
		Generic Data Link Control (GDLC) Environment Overview in AIX 5L Version 5.2 Communications Programming Concepts.
	publib16.boulder.ibm.com /pseries/fr_FR/libs/commtrf1/writex.htm (528 words)

	Communications Programming Concepts - Generic Data Link Control Environment Overview
		Generic data link control (GDLC) defines a generic interface with a common set of commands that allows application and kernel users to control DLC device managers within the operating system.
		The DLC Device Manager Environment figure (Figure 1) illustrates the basic structure of a DLC environment.
		Controls hardware adapter input/output (I/O) and direct memory access (DMA) registers, and routes receive packets to multiple DLCs.
	publib16.boulder.ibm.com /doc_link/en_US/a_doc_lib/aixprggd/progcomc/dlc_ovw.htm (560 words)

	Integrated data link control with dynamic hyperchannel mapping (EP0447053B1)
		An improved data link control device for use in high speed data communication applications, for instance primary rate ISDN applications, includes facilities for dynamic HyperChannel mapping.
		In such mapping, plural communication channels which ordinarily could be used for separate communication applications are associated as a HyperChannel group, and data communication is carried out concurrently over all channels of the group so as to advantageously utilise the aggregate bandwidth of the group.
		A data communication controller having a plurality of channels selectively assignable for conducting data communications between a data communication network (1) and a data processing system (3), a selected group of said channels being operable as a single extended channel of increased bandwidth, and
	www.delphion.com /details?pn=EP00447053B1 (262 words)

	Datacomm - Week 8, Day 2 (Site not responding. Last check: 2007-10-18)
		CH 11 - Data Link Layer Protocols (HDLC)
		Protocols are a set of rules or specifications used to implement one or more layers of the OSI model.
		Data and ACK frames numbered 0 and 1 to ensure ACK of correct frame
	www.rit.edu /~cmd3187/notes/200402/datacomm/w8d2.htm (252 words)

	Chapter 2 Data Link Control Layer
		One of the host's DMA controllers must be configured to allow temporary suspension of the host CPU when data transfer is in progress.
		To disable the host CPU during data transfer, a mode byte (C1C1h) is written to the controller's mode register at 0D6h.
		The controller is then set to use channel 5 by writing 0101h to the mask register at 0D4h (figure 2.3).
	www.forrestg.pwp.blueyonder.co.uk /msc/chap2.htm (1431 words)

Try your search on: Qwika (all wikis)