In computer networking , the Stream ControlTransmissionProtocol SCTP is a Transport Layer communications protocolprotocol , serving in a similar role to the popular protocols TransmissionControlProtocol ... portal swdepot displayInstallInfo.do?productNumber SCTP title Stream ControlTransmissionProtocol ... TransmissionProtocol SCTP RFC 6096 Stream ControlTransmissionProtocol SCTP Chunk Flags Registration updates RFC 4960 RFC 5062 Security Attacks Found Against the Stream ControlTransmissionProtocol SCTP and Current Countermeasures RFC 5061 Stream ControlTransmissionProtocol SCTP Dynamic Address Reconfiguration RFC 5043 Stream ControlTransmissionProtocol SCTP Direct Data Placement DDP Adaptation RFC 4960 Stream ControlTransmissionProtocol RFC 4895 Authenticated Chunks for the Stream ControlTransmissionProtocol SCTP RFC 4820 Padding Chunk and Parameter for the Stream ControlTransmissionProtocol SCTP RFC 4460 Stream ControlTransmissionProtocol SCTP Specification Errata and Issues RFC 3873 Stream ControlTransmissionProtocol SCTP Management Information Base MIB RFC 3758 Stream ControlTransmissionProtocol SCTP Partial Reliability Extension RFC 3554 On the Use of Stream ControlTransmissionProtocol SCTP with IPsec RFC 3436 Transport Layer Security over Stream ControlTransmissionProtocol RFC 3309 Stream ControlTransmissionProtocol SCTP Checksum Change obsoleted by RFC 4960 RFC 3286 An Introduction to the Stream ControlTransmissionProtocol RFC 3257 Stream ControlTransmissionProtocol Applicability Statement RFC 2960 Stream ControlTransmissionProtocol updated by RFC ... Multihoming cs Stream ControlTransmissionProtocol de Stream ControlTransmissionProtocol es Stream ControlTransmissionProtocol eu Stream ControlTransmissionProtocol fr Stream ControlTransmissionProtocol it Stream ControlTransmissionProtocol he Stream ControlTransmissionProtocol nl Stream ControlTransmissionProtocol ja Stream ControlTransmissionProtocol nn Stream ControlTransmission ... more details
The TransmissionControlProtocol TCP is one of the core Communications protocol protocols of the Internet Protocol Suite . TCP is one of the two original components of the suite, complementing the Internet Protocol IP , and therefore the entire suite is commonly referred to as TCP IP . TCP provides ... protocol for sharing resources using packet switching among the nodes. A central control component of this model was the TransmissionControl Program that incorporated both connection oriented links and datagram services between hosts. The monolithic TransmissionControl Program was later divided into a modular architecture consisting of the TransmissionControlProtocol at the connection oriented layer and the Internet Protocol at the internetworking datagram layer. The model became known informally .... TCP segment structure TransmissionControlProtocol accepts data from a data stream, segments ... support it. Selective acknowledgment is also used in Stream ControlTransmissionProtocol SCTP . Window ... assessment TCP.pdf Security Assessment of the TransmissionControlProtocol TCP ref and is currently ... Assessment of the TransmissionControlProtocol TCP ref Denial of service By using a IP address spoofing ... control ref name comer Reliable transmission TCP uses a sequence number to identify each byte of data ... This is the end to end principle at work. Flow control TCP uses an end to end flow controlprotocol ... a Sliding Window Protocol sliding window flow controlprotocol. In each TCP segment, the receiver specifies ... or control it in User space using Berkeley sockets and it is controlled by Protocol stack only ... computer. TCP is the protocol used by major Internet applications such as the World Wide Web ... data stream service, may use the User Datagram Protocol UDP , which provides a datagram service ... 1974 the Institute of Electrical and Electronic Engineers IEEE published a paper entitled A Protocol ... Papers CK74.pdf author Vinton G. Cerf, Robert E. Kahn, title A Protocol for Packet ... more details
Protocol parameters. IPCP uses the same Configuration Option format defined for LCP Link ControlProtocol , with a separate set of Options. IPCP Configuration Options table border 1 tr th 00 th ... 1332 The Internet ProtocolControlProtocol IPCP RFC 1570 PPP Link ControlProtocol LCP Extensions RFC 1661 The Point to Point Protocol PPP Category Internet protocols de Internet ProtocolControlProtocol es IP ControlProtocol ja Internet ProtocolControlProtocol pl Internet ProtocolControlProtocol ... td IP Compression Protocol. td td RFC 1332, RFC 3241, RFC 3544 td tr tr th 3 th td align center 6 .... IP Compression Protocol class wikitable Type Length IP Compression Protocol Data 1 byte 1 byte 2 ... more details
IPstack Licklider TransmissionProtocol is a point to point protocol for the use in deep space links. Design LTP is designed to run directly on a data link layer such as e.g. AOS , but it can also run on the User Datagram Protocol UDP , e.g. if used in a sensor network, in a private network where bandwidth contestation isn t an issue , and for software debug purposes. Therefore it does not address issues like routing or congestion control. It was originally designed to support long haul transmission in an interplanetary network its design is based on experiences with the CCSDS File Delivery Protocol CFDP . LTP is commonly seen as the standard underlying convergence layer protocol for the Bundle Protocol http www.rfc editor.org rfc pdfrfc rfc5050.txt.pdf RFC 5050 , supporting a wide selection of networks. Developed for space communication however, its features are reliable data transport for important data such as a le header unreliable data transport for less important data such as image pixels a defunct pixel can be overcome no negotiation exchange due to potentially higher round trip time s and to avoid link underutilisation energy efficiency, as it will only send if a link ... html rfc5325 RFC 5325 Licklider TransmissionProtocol Motivation http tools.ietf.org html rfc5326 RFC 5326 Licklider TransmissionProtocol Specification http tools.ietf.org html rfc5327 RFC 5327 Licklider TransmissionProtocol Security Extensions http ion.ocp.ohiou.edu ION, University of Ohio ..., check whether the link towards the destination remember, this is a point to point protocol is available and if so, start the transmission. If the link is not available, it will keep the data in its queue and start transmission as soon as a so called link state cue arrives, either from an underlying ... the report acknowledgement it cancels its timer and the transmission of the red data is completed. The transmission is completed if the end of block segment has arrived. More details about LTP can be found ... more details
In computing , the link controlprotocol LCP forms part of the point to point protocol PPP . In setting up PPP communications, both the sending and receiving devices send out LCP packet information technology packet s to determine the standards of the ensuing data transmission. The LCP Communications protocolprotocol checks the identity of the linked device and either accepts or rejects the device determines the acceptable packet size for transmission searches for errors in configuration can terminate the link if requirements exceed the parameters Devices cannot use PPP to transmit data over a network until the LCP packet determines the acceptability of the link, but LCP packets are embedded into PPP packets and therefore a basic PPP connection has to be established before LCP can reconfigure it. The LCP over PPP packets have control code 0xC021 and their info field contains the LCP packet, which has four fields Code, ID, Length and Data . Code Operation requested configure link, terminate link, ... and acknowledge and deny codes. Data Parameters for the operation External links http tools.ietf.org html rfc1570.html RFC1570 PPP LCP Extensions http tools.ietf.org html rfc1661.html RFC1661 The Point to Point Protocol PPP http tools.ietf.org html rfc1663.html RFC1663 PPP Reliable Transmission Category Link protocols Category Internet standards cs LCP de Link ControlProtocol es Link ControlProtocol fr Link ControlProtocol ja Link ControlProtocol ru LCP zh ... more details
Unreferenced stub auto yes date December 2009 merge to Point to point protocol date January 2012 about protocols running atop the Point to Point Protocol for negotiating network layer protocol options the ARPANET NCP Network Control Program A Network ControlProtocol is a protocol that runs atop the Point to Point Protocol PPP and that is used to negotiate options for a network layer protocol running atop PPP. Network Control Protocols include the Internet ProtocolControlProtocol for the Internet Protocol , the Internetwork Packet Exchange ControlProtocol for the IPX Internet Packet Exchange protocol, and the AppleTalk ControlProtocol for AppleTalk . This protocol operates on the Data Link layer Category Internet protocols Category Internet standards Category Network layer protocols Compu network stub de Network ControlProtocol es Network ControlProtocol fr Network ControlProtocol ja Network ControlProtocol zh ... more details
October 28, 2005 . DCCP provides a way to gain access to congestion control mechanisms without having to implement them at the Application Layer . It allows for flow based semantics like in TransmissionControlProtocol TCP , but does not provide reliable in order delivery. Sequenced delivery within multiple streams as in the Stream ControlTransmissionProtocol SCTP is not available in DCCP. DCCP ...IPstack The Datagram Congestion ControlProtocol DCCP is a message oriented transport layer Transport Layer protocol computing protocol . DCCP implements reliable connection setup, teardown, Explicit Congestion Notification ECN , congestion control , and feature negotiation. DCCP was published as RFC ... for TCP or used User Datagram Protocol UDP and implemented their own congestion control mechanisms, or have no congestion control at all. While being useful for these applications, DCCP can also be positioned as a general congestion control mechanism for UDP based applications, by adding, as needed ... charter.html IETF Datagram Congestion ControlProtocol dccp Charter Protocol Specifications RFC 4340 Datagram Congestion ControlProtocol RFC 5595 The Datagram Congestion ControlProtocol DCCP Service ... RFC 4336 Problem Statement for the Datagram Congestion ControlProtocol DCCP http www.read.cs.ucla.edu ... layer protocols cs Datagram Congestion ControlProtocol de Datagram Congestion ControlProtocol es Protocolo de Control de Congesti n de Datagramas eu DCCP fr Datagram Congestion ControlProtocol ko it Datagram Congestion ControlProtocol he Datagram Congestion ControlProtocol nl Datagram Congestion ControlProtocol ja Datagram Congestion ControlProtocol pt Datagram Congestion ControlProtocol ru DCCP sv Datagram Congestion ControlProtocol tr Datagram Congestion ControlProtocol yo Datagram Congestion ControlProtocol zh DCCP ... streaming media , Multiplayer online game s and Voice over Internet Protocol Internet telephony ... more details
are formatted with whitespace, much like you would expect to find in TransmissionControlProtocol ...distinguish Media Gateway ControlProtocol Megaco ri date November 2009 IPstack MGCP is an implementation of the Media Gateway ControlProtocol architecture ref RFC 2805, Media Gateway ControlProtocol ... Protocol SGCP . MGCP is a signalling and call control Communications protocolprotocol used within ... devices, mostly simply executing control commands. The protocol represents a decomposition ... RTP for framing of the media streams. Another implementation of the Media Gateway ControlProtocol ... protocols follow the guidelines of the API Media Gateway ControlProtocol Architecture and Requirements ... connection model. Architecture The Media Gateway ControlProtocol architecture and its methodologies ... Restart In Progress Implementations Two implementations of the Media Gateway ControlProtocol are in common .... ref RFC 3435, Media Gateway ControlProtocol MGCP Version 1.0 , F. Andreasen, B. Foster, The Internet Society January 2003 ref Megaco is described in RFC 3525. ref RFC 3525, Gateway ControlProtocol ... protocols and are not interoperable. RFCs RFC 3435 Media Gateway ControlProtocol MGCP Version 1.0 this supersedes RFC 2705 RFC 3660 Basic Media Gateway ControlProtocol MGCP Packages informational RFC 3661 Media Gateway ControlProtocol MGCP Return Code Usage RFC 3064 MGCP CAS Packages RFC 3149 MGCP Business Phone Packages RFC 3991 Media Gateway ControlProtocol MGCP Redirect and Reset Package RFC 3992 Media Gateway ControlProtocol MGCP Lockstep State Reporting Mechanism informational RFC 2805 Media Gateway ControlProtocol Architecture and Requirements RFC 2897 Proposal for an MGCP Advanced ... VoIP protocols Category VoIP terminology & concepts ca Media Gateway ControlProtocol de Media Gateway Control Protokoll es MGCP fr Media Gateway ControlProtocol it MGCP ja MGCP ml ... media gateway s on Internet Protocol IP networks and the public switched telephone network PSTN . The general ... more details
ref differs from transport protocols such as TransmissionControlProtocol TCP and User Datagram Protocol ... Protocol IRDP Smurf attack TransmissionControlProtocol TCP ping traceroute ICMP tunnel References Reflist External links RFCs RFC 792, Internet Control Message Protocol RFC 1122, Requirements for Internet ...The Internet Control Message Protocol ICMP is one of the core protocols of the Internet Protocol Suite ... year 2007 pages 621 630 isbn 0 07 296775 7 ref It is assigned protocol number 1. ref cite web title Protocol Numbers url http www.iana.org assignments protocol numbers protocol numbers.xml work http www.iana.org assignments protocol numbers protocol numbers.xml publisher Internet Assigned Numbers Authority accessdate 2011 06 23 ref ICMP ref cite rfc title Internet Control Message Protocol rfc ... an Internet Control Message Protocol bs Internet Control Message Protocol bg ICMP ca Internet Control Message Protocol cs ICMP da Internet control message protocol de Internet Control Message Protocol el ICMP es Internet Control Message Protocol eo ICMP eu ICMP fa fr Internet Control Message Protocol gl ICMP ko hr ICMP id Internet Control Message Protocol it Internet Control Message Protocol he Internet Control Message Protocol lv ICMP lt ICMP hu ICMP ml nl Internet Control Message Protocol ja Internet Control Message Protocol no ICMP pl Internet Control Message Protocol pt Internet Control Message Protocol ro Internet Control Message Protocol ru ICMP sl ICMP sr ICMP fi ICMP sv ICMP th Internet Control Message Protocol tr Internet Control Message Protocol uk ICMP yo Internet Control Message Protocol zh ... . ICMP for IPv4 Internet Protocol version 4 IPv4 is also known as ICMPv4. IPv6 has a similar protocol, ICMPv6 . IPstack Technical details Internet Control Message Protocol is part of the Internet Protocol Suite as defined in RFC 792. ICMP messages are typically generated in response to errors ... more details
distinguish2 Real Time Streaming Protocol RTSP The Real Time Transport ControlProtocol RTCP is a sister protocol of the Real time Transport Protocol RTP . Its basic functionality and packet structure is defined in the RTP specification RFC 3550, ref RFC 3550, RTP A Transport Protocol for Real Time Applications ... User Datagram Protocol UDP port, with RTCP messages being sent over the next higher odd numbered port. ref RFC 3605, Real Time ControlProtocol RTCP attribute in Session Description Protocol SDP , C ... is the Extended Report packet type introduced by RFC 3611. ref RFC 3611, RTP ControlProtocol ... may occur, because of the RTCP bandwidth control mechanism required to control congestion see Protocol ... Realtime controlprotocol and its improvements for Internet Protocol Television ref Hierarchical aggregation ... DEFAULTSORT Rtp ControlProtocol Category Streaming Category Application layer protocols Category Audio network protocols bg RTCP ca Real Time ControlProtocol cs RTCP da Real time controlprotocol de RealTime ControlProtocol es Real time controlprotocol fr Real time Transport ControlProtocol it RTCP lt RTCP ja Real time Transport ControlProtocol pms RTCP pl Real Time ControlProtocol pt RTCP ru RTCP sv Real Time ControlProtocol uk RTCP zh ... and control information for an RTP flow. It partners RTP in the delivery and packaging of multimedia ... trip delay time . An application may use this information to control quality of service parameters ... Real time Transport Protocol SRTP defined in RFC 3711. IPstack Protocol functions RTCP provides three ... for adaptive media encoding codec and detection of transmission faults. If the session is carried ... network congestion, the protocol must include session bandwidth management. This is achieved by dynamically ... control functions, because RTCP is a convenient means to reach all session participants, whereas ... types of packets sender report, receiver report, source description, and bye. In addition, the protocol ... more details
unreferenced date May 2008 A transmissioncontrol unit or TCU is a device that controls modern electronic automatic transmission s. A TCU generally uses sensors from the vehicle as well as data provided by the Engine Control Unit to calculate how and when to change gears in the vehicle for optimum performance ... stages of electronic automatic transmissioncontrol development. Transmission solenoid s are a key component to these control units. The evolution of the modern automatic transmission and the integration of electronic controls have allowed great progress in recent years. The modern automatic transmission ... needed to control the transmission engine speed, vehicle speed, throttle position or manifold ... hydraulic. This requires precise pressure control. Older automatic transmission designs only use a single line pressure control solenoid which modifies pressure across the entire transmission. Newer automatic transmission designs often use many pressure control solenoids, and sometimes allow ... allows the modern automatic transmission to be used with appropriate transmission characteristics for each ... Control Module or PCM . Input parameters The typical modern TCU uses signals from engine sensors, automatic transmission sensors and from other electronic controllers to determine when and how to shift ... of Electronic throttle control drive by wire technology, this is often a shared ... uphill or towing a trailer the transmission will change its gearshift patterns to suit the situation .... Transmission fluid Temperature sensor TFT This may also be known as Transmission Oil Temperature. This sensor determines the fluid temperature inside the transmission. This is often used for diagnostic purposes to check ATF Automatic Transmission Fluid at the correct temperature. The main use of this has been as a failsafe feature to downshift the transmission if the ATF becomes extremely ... past full throttle. When activated the transmission downshifts into the lowest permissible gear based ... more details
Third Party ControlProtocol TPCP is a client server protocol with three types of primitives Request used by the client , Notify used by the server to send state information to the client , Responses sent as a response to a request TPCP is the Protocol used for third party call control 3pcc . TPCP is the protocol used by the controller while communicating with the control server over the control let Clarify date December 2010 . TPCP is used to initiate, control and observe sessions between remote parties. Category Network protocols ... more details
Image WREX mctl.jpg right thumb WREX TV s master control desk in the TCR Transmissioncontrol room TCR or transmission suite , or Tx room , or presentation is a room at broadcast facilities and television station s around the world. Compared to a Master Control Room , it s usually smaller in size and is a scaled down version of centralcasting . The TX Room or Presentation suite are staffed 24x7 by Presentation Coordinators and Tape Operators and is fitted out with video play out systems often using server based broadcast automation . For operational and content qualitative reasons, not more than two television channels are managed from one TCR. Channels with live content and production switching requirements like sports channels have their own dedicated TCRs. A television station may have several TCRs depending on the number of channels they broadcast. Presentation suite The presentation suite is staffed 24x7 by on air presentation coordinators who are responsible for the continuity and punctual play out of scheduled broadcast programming . Programming may be live from the television studio or played from video tape or from video server playout . When broadcast programming is Live the presentation coordinator will override the broadcast automation system and manually switch television program ming. The Presentation coordinator will directly coordinate live television programming going to air in consultation with Master Control and the Production Assistant PA or the Directors Assistant DA . The Presentation Coordinator will arrange program source to be allocated by master Control and advise the DA as to the start time and count the production in from 10 seconds to First Frame of picture and the DA will count the production out to the television commercial break and so on it continues ... equipment Broadcast Control desk . Broadcast automation control computers. Production switcher . Talkback ... Control Room Central Apparatus Room Broadcast engineering References unreferenced date January 2008 ... more details
Unreferenced date December 2009 Orphan date February 2009 Network Device ControlProtocol NDCP was designed by Laurent Grumbach who at the time was an engineer with Harris Broadcast . Previous to that he had worked for Louth Automation which was acquired by Harris. NDCP was designed to be a network based network protocolprotocol instead of the traditional serial connection protocols to Broadcast devices. NDCP was an XML compliant protocol and loosely based on the concepts of SOAP . The intent was that vendors would standardize their Broadcast devices on a single protocol instead of each vendor offering proprietary protocol s for their devices. The use of a network based protocol would also allow the devices to be remote from the controlling application and not limited by the connection length of an RS422 serial line. Category Network protocols ... more details
Simple Gateway ControlProtocol SGCP is a communications protocol used within a Voice over Internet Protocol VoIP system. It has been superseded by MGCP , an implementation of the Media Gateway ControlProtocol architecture. The Simple Gateway ControlProtocol was published in 1998 by Christian Huitema and Mauricio Arango, ref http huitema.net voip sgcp v1 0.html Initial v1 draft, published on Christian Huitema s web site ref as part of the development of the Call Agent Architecture at Telcordia. In this architecture a central server, the Call Agent , controls media gateways and receives telephony signaling requests through a signalling gateway . Later implementation of the architecture refer to the Call Agent as a Softswitch . SGCP was intended to be compatible with the Session Initiation Protocol SIP , enabling the Call Agent to relay calls between a Voice over IP network using SIP and a traditional telephone network. The SGCP commands are encoded with a syntax somewhat comparable to the SIP or HTTP headers. They carry a payload describing the voice over IP media stream. This payload is encoded using the same session description protocol SDP as SIP. SGCP was merged with the IPDC proposal sponsored by Level3 Communications. This led to the definition of the Media Gateway ControlProtocol, jointly submitted to the IETF by the authors of SGCP and IPDC in November 1998. See also Megaco References references External links http www.argreenhouse.com SGCP SGCP pages at Telcordia Description of SGCP and the call agent architecture. Category VoIP protocols ro Simple Gateway ControlProtocol ... more details
The Skinny Call ControlProtocol SCCP , or short Skinny is a proprietary network terminal controlprotocol originally developed by Selsius Systems . The SCCP technology is now owned and defined by Cisco Systems, Inc. . SCCP is a lightweight protocol for session signaling with Cisco CallManager . ref http www.cisco.com en US products sw voicesw ps556 products tech note09186a0080624977.shtml Call states sent to SCCP endpoints by Cisco CallManager ref Examples of SCCP clients include the Cisco 7900 series of IP phones, Cisco IP Communicator softphone and the 802.11b wireless Cisco Wireless IP Phone 7920 Cisco 7920 , along with Cisco Unity voicemail server. CallManager acts as a signaling proxy for call events initiated over other common protocols such as H.323 , Session Initiation Protocol SIP , ISDN and or MGCP . Protocol components A SCCP client uses TCP IP to communicate with one or more Call Manager applications in a cluster. It uses the Real time Transport Protocol RTP over User Datagram Protocol UDP transport for the bearer traffic real time audio stream with other Skinny clients or an H.323 terminal. SCCP is a stimulus based protocol and is designed as a communications protocol for hardware endpoints and other embedded systems, with significant CPU and memory constraints. Origin ... support sub protocol home.html Skinny Call ControlProtocol SCCP Cisco Systems http hisown.com Talks VoIP 20 20Excerpt 20 SCCP .pdf Skinny Call ControlProtocol SCCP Fragment of a VoIP course dealing ... Category Application layer protocols cs Skinny Client ControlProtocol de Skinny Client ControlProtocol es Skinny Client ControlProtocol fr Skinny Client ControlProtocol pl Skinny Client ControlProtocol ro Skinny Client ControlProtocol ru SCCP compu network stub ... like Symbol Technologies , SocketIP , and Digium have implemented this protocol in VoIP Terminal ... allowing applications to access all Cisco line side features. See also Voice over Internet Protocol ... more details
primary sources date September 2011 Media Resource ControlProtocol MRCP is a communication protocol used by speech servers to provide various services such as speech recognition and speech synthesis to their clients. MRCP relies on another protocol, such as Real Time Streaming Protocol RTSP or Session Initiation Protocol Session Initiation Protocol SIP for establishing a control session and audio streams between the client and the server. MRCP uses a similar style of clear text signaling as HTTP and many other Internet protocols, in which each message contains 3 sections a first line, a header and a body. The first line indicates the type of message as well as information such as response codes. The header contains a number of lines, each in the format header data . The body, whose length is specified by the header, contains the details of the message. Like HTTP, MRCP uses a request usually issued by the client and response model. Responses may simply acknowledge receipt of the request or give other information regarding its processing. For example, an MRCP client may request to send some audio data for processing say, for speech recognition , to which the server could respond with a message containing a suitable port number to send the data, since MRCP does not have support for audio data specifically as this would have to be handled by some other protocol, such as Real time Transport Protocol RTP . Currently an Internet Draft of MRCP protocol version 2 has been submitted. Version 2 uses Session Initiation Protocol SIP for managing sessions and audio streams between the server and the clients, whereas version 1 did not specify the underlying protocol. MRCP has been adopted by a wide range of commercial voice applications, such as IBM WebSphere Voice Server , Microsoft ... 4463, A Media Resource ControlProtocol MRCP http www.unimrcp.org UniMRCP , An open source cross ... software stub de Media Resource ControlProtocol fr MRCP ... more details
Video Disk ControlProtocol VDCP is a proprietary communications protocol primarily used in broadcast automation to control hard disk video server s for broadcast television . VDCP was originally developed by Louth Automation and is commonly called the Louth Protocol . At the time it was developed when Hewlett Packard eventually sold to Pinnacle Systems and Tektronix were both bringing to market the first of the VideoFile Servers to be used in the broadcast industry. They contacted Louth Automation who then designed the communications protocol basing it on Sony protocols of both the Sony LMS Storage Device and the Sony VTR. The principal work was carried out by Ken Louth and Stan Becker. VDCP uses a tightly coupled master slave methodology. The controlling device takes the initiative in communications between the controlling broadcast automation device and the controlled device video disk . VDCP conforms to the Open Systems Interconnection OSI reference model. VDCP is a serial communications protocol based on RS 422 . It is derived from the Sony 9 Pin Protocol , an industry standard protocol for control of professional broadcast VTR s that is used in online editing . Full details of the protocol are available from Harris Broadcast , a division of Harris Corporation who acquired Louth in 2000. In 2001 Harris announced the introduction of Network Device ControlProtocol NDCP , a TCP IP based successor for VDCP. Little information on NDCP is readily available, and thus VDCP has remained the de facto standard. External links http www.broadcast.harris.com Harris Broadcast http www.harris.com view pressrelease.asp?act lookup&pr id 476 NDCP Launch press release Category Broadcast engineering Category Television technology Category Digital television Category Film and video technology Category Television terminology de Video Disk ControlProtocol it Video Disk ControlProtocol ... more details
Unreferenced date December 2006 Other uses IPDC disambiguation Internet Protocol Device Control IPDC is a specification for controlling hardware devices, developed by Level 3 Communications and a group of other Telephone company telco s. Communications protocolProtocol was designed for communicating between centralized switch es and IP based Gateway computer networking gateways . It provides management and integration on a very large scale. It should not be confused with DVB IPDC which stands for Internet Protocol IP datacasting data broadcasting over Broadcasting radio and television broadcasting networks such as DVB H . See also Datacasting DVB H IP over DVB Multiprotocol encapsulation MPE for MPEG transport stream Unidirectional Lightweight Encapsulation ULE for MPEG transport stream Category Network protocols Category Broadcast engineering ... more details
Digital Audio ControlProtocol DACP is a protocol used by the iTunes Remote Apple Remote application app on IOS Apple iOS mobile device s iPad , iPhone and iPod Touch to control iTunes running on a remote computer. By connecting the remote computer to loudspeakers, directly or indirectly, for example via Apple s Airport Express , the mobile device can be used as a two way WLAN music remote control. With the introduction of TunesRemote , ref name TunesRemote Android operating system Android , Symbian and Nokia N9 users can also access DACP servers. Clients DACP clients can connect to any DACP enabled server. The original was the Apple Remote for iPhone connecting to iTunes. There are now multiple ... specifically for iTunes remote control. CuteRemote CuteRemote ref name CuteRemote http www.iki.fi z7 ... control software from http code.google.com p tunesremote plus TunesRemote with the graphical user interface ... control a DACP server from any computer with Java. Remote for iTunes Remote for iTunes ref name ... control DACP servers via their home Wi Fi network. Remote for Windows Phone 7 Remote for Windows ... Software ref name Komodex http komodex.com Komodex Software ref lets users control DACP servers from ... iPad application that browses a remote DACP library and let users control it. In short, this is an equivalent ... specifically for Itunes remote control. MonkeyTunes for MediaMonkey In 2009 Melloware Inc., ref ... server for MediaMonkey that is fully compliant with Apple s DACP protocol. TouchRemote for Foobar2000 ... compliant with Apple s DACP protocol allowing Apple Inc. s Remote application to be used. AlbumPlayer ... a DACP server that is fully compliant with Apple s DACP protocol, and a standard web service ... ref name Rosenfeld active See also Digital Audio Access Protocol Remote Audio Output Protocol ... client using DACP. Has reverse engineer ed protocol documentation. http code.google.com p tunesremote ... Data transmission ... more details
In telecommunication , the term protocolcontrol information or PCI has the following meanings The queries and replies among communication s equipment to determine the respective capabilities of each end of the communications data link link . For layered systems, information exchanged between entities of a given layer, via the service provided by the next lower layer, to coordinate their joint Business operations operation . FS1037C Category Telecommunications ... more details
Unreferenced date December 2009 The Mass Storage ControlProtocol MSCP was a Protocol computing protocol designed by Digital Equipment Corporation of Maynard, Massachusetts Maynard , Massachusetts for the purposes of controlling their high end mass storage options. First implemented in the VMScluster HSC50 hierarchical storage controller, the protocol quickly spread throughout the entire line of mass storage controllers built by DEC. The UDA50 was an implementation of MSCP built on a Unibus card other implementations for example, the RQDX stretched down to the Q bus and small, 5 megabyte disk drives and even diskette s. Designed to minimize the amount of Central processing unit CPU involvement, the protocol depended upon two queues. Into one queue were placed packet information technology packet s which fully described the commands to be executed by the mass storage subsystem. To initiate an I O request, the CPU had only to create a small data structure in memory, append it to a send queue, and if that was the first packet in the send queue, wake the MSCP controller. After the command was executed, an appropriate status packet would be placed into the second queue to be read by the CPU. Interrupts to the CPU a costly operation were not needed so long as further command packets remained in the command queue and the response queue was not in danger of over flowing. I O space reads and writes to the MSCP controller, a less expensive but still costly operation, were similarly minimized. Because MSCP packets were deliberately designed to resemble the packets exchanged on the VMScluster interconnects, it was a very inexpensive operation to ship storage requests around a VMScluster for remote execution this greatly facilitated the creation of large scale VMSclusters. The dependence upon in memory packets and the minimization of interrupts and I O space reads and writes greatly facilitated remote operations. External links http vt100.net manx details 1,5421 MSCP Basic Disk Functions ... more details
Orphan date February 2009 The Realtek Remote ControlProtocol RRCP , developed by Realtek , is an Application layer protocol, running directly over an Ethernet frames. Main idea behind this protocol is to allow direct access to the Ethernet switch controller s internal register over an Ethernet network itself. This approach allows to avoid cost of including a processor, RAM, Flash memory, etc. in a managed Ethernet switch. Instead, all intelligence is targeted to reside in a nearby computer, running special RRCP aware Ethernet switch management software. Packet types Hello Used to initiate scan for RRCP capable switches in a network segment, and to fetch some their parameters. Hello reply Is sent by an RRCP capable switch as a response to a valid Hello packet. Contains some their parameters, such as IDs, and MAC addresses. Get Used to fetch value from internal switch controller s register. Get reply Is sent by an RRCP capable switch as a response to a valid Get packet. Contains requested register number and value, that was read from it. Set Used to set an internal switch controller s register to a certain value. Contains register number and a value to be written to register. No acknowledgment is generated by a switch. Loop Detect packet Is not a part of RRCP protocol itself, but is closely associated, being an underlying mechanism for a simplified Spanning tree protocol substitute in RRCP capable switch controllers. Echo request Is not a part of RRCP protocol itself, but is closely associated, being an underlying mechanism for a Layer 2 analog of Ping ICMP Echo request Type 8 message in RRCP capable switch controllers. Echo reply Is not a part of RRCP protocol itself, but is closely associated, being an underlying mechanism for a Layer 2 analog of Ping ICMP Echo reply Type 0 message in RRCP capable switch controllers. Hardware Currently, RRCP protocol is officially working on Realtek s RTL8316BP, RTL8318P and RTL8324P switch controller chips. Unofficially, it also found ... more details
Image Official VSCP logo.png 250px right The Very Simple ControlProtocol VSCP is a free automation protocol suitable for all sorts of automation task where Building automation building or Home automation home automation is in the main focus. Its main advantage is that each VSCP node can work completely autonomous, being part of distributed network of other nodes. VSCP is independent from the physical layer e.g. CAN bus , Ethernet , RS 485 , RS 232 , MiWi connecting the individual nodes to form the automation network bus. On the bus there can be nodes reading switches, controlling Lighting control system lighting , Window Blinds blinds , windows or information displays, broadcasting physical measurements e.g. temperature , luminosity , power consumption, ... , multimedia control, Burglar alarm burglar or Fire alarm system fire alarm , etc. There is a subset of the protocol Level I that is very much tailored to the CAN bus and resource restricted microcontroller s. Protocol Level II is designed for Ethernet UDP, TCP and own Ethernet type Raw Ethernet and wireless physical layers. All share the same common message fields & framework and can be connected through gateways. Event VSCP is based on events . Each time an event occurs it is broadcasted towards all other nodes. Each node on the network will receive the event and will decide if this event needs to be handled or not. Image VSCP event processing diagram.png right The example given in the diagram describes a button being pressed ... for ALARM , MEASUREMENTS , CONTROL , INFORMATION , etc. Currently VSCP specifies about 25 classes ... defined but it is in general not difficult to map these fields onto a physical layer protocol. There are 2 levels of the VSCP protocol called LEVEL I & LEVEL II . They are both basically the same protocol but differ in size of the different fields. Level I is intended to run on nodes with more ... using CLASS 0 events. Class 0 events are VSCP protocol functionality messages intended for configuring ... more details
In computer networking , Rate Based Satellite ControlProtocol RBSCP is a tunneling method proposed by Cisco to improve the performance of satellite network links with high latency and error rates. The problem RBSCP addresses is that the long Round trip delay time RTT on the link keeps TransmissionControlProtocol TCP virtual circuits in slow start for a long time. This, in addition to the high loss give a very low amount of Bandwidth signal processing bandwidth on the channel. Since satellite links may be high throughput, the overall link utilized may be below what is optimal from a technical and economic view. Means of operation RBSCP works by tunneling the usual IP packets within IP packets. The transport protocol identifier is 199. On each end of the tunnel, routers buffer packets to utilize the link better. In addition to this, RBSCP tunnel routers modify TCP options at connection setup. implement a Performance Enhancing Proxy PEP that resends lost packets on behalf of the client, so loss is not interpreted as congestion. See also http cisco.biz en US docs ios 12 3t 12 3t7 feature guide gt rbscp.html compu stub Category Computer networking ... more details
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