Unreferenced stub auto yes date December 2009 Orphan date February 2009 Packettelephony is the use of personal computers and a packet data network to produce a voice conversation. It consists of telephony and data tightly coupled on packet information technology packet based switched multimedia networks. The goal of packet switched fabric in both Local area network LAN and Wide area network WAN , the vision in to drive voice and data over a single multimedia packet based N W allowing waves to engage in a media rich communication in a natural and straightforward manner. The packet and based fabric is capable of supporting future applications such as Streaming media video streaming and video conferencing . The transaction to a new paradigm will take years to complete. However technology matures and new application proliferate packet technology will appear in broader market. There is a major distinction between Intranet telephony and VoIP . Category Telephony Category Packets information technology DEFAULTSORT PacketTelephony Comm stub ... more details
Cleanup date May 2010 Wiktionary In telecommunication , telephony pron en t l f ni respell t LEF nee encompasses the general use of equipment to provide voice communication over distances, specifically by connecting telephone s to each other. ref http www.sangoma.com support glossary.html Sangoma Glossary Telephony ref History Telephones were originally connected directly together in pairs. Each user had separate telephones wired to the various places he might wish to reach. This became inconvenient when people wanted to talk to many other telephones, so the telephone exchange was invented. Each telephone could then be connected to other local ones, thus inventing the local loop and the telephone call . Soon, nearby exchanges were connected by Trunking trunk lines , and eventually distant ones were as well. In modern times, most telephones are plugged into telephone plug telephone jack s. The jacks are connected by on premises wiring inside wiring to a drop telecommunication drop wire which connects the building to a cable. Cables usually bring a large number of drop wires from all over a district access network to one wire center or telephone exchange. When the user of a telephone wants to make a telephone call , equipment at the exchange examines the dialed telephone number ... handling of such traffic. Digital telephony is the use of digital technology in the provision ... digital and analog signals takes place inside the telephone. Telephony was digitized to cut the cost and improve the quality of voice services, but digital telephony was then found useful for new network .... Recent developments IP telephony is a modern form of telephony which uses the TCP IP protocol popularized ... an acronym for plain old telephone service . Citation needed date May 2010 Computer telephony integration ... telephony links. See also Portal Telecommunication List of telephony terminology History of the telephone ... . Category Telephony Category History of telecommunications interwiki links to this article in other ... more details
Wiktionary PacketPacket may refer to A small parcel or container Two or more papers held together by a single staple. Cigarette pack et Sugar packet Ketchup packet Network packet , a formatted block of data carried by a packet mode computer network Packet radio , a form of amateur radio data communications using the AX25 protocol Packet sea transport , a packet service is a regular scheduled service, carrying valuable freight and first class passengers C 82 Packet , a U.S. military transport aircraft Packet Newspapers , newspapers with the title including the word Packet , after a place name See also lookfrom intitle Package disambiguation Pack disambiguation Kit disambiguation disambig de Paket fr Paquet pl Pakiet ru simple Packet sk Paket fi Paketti sv Paket uk ... more details
for instance, using a circuit switched voice service that is complemented with a packet switched ... and the video part is carried over a packet switched service. In fixed mobile convergence scenarios ... more details
choice when calling local, international or specific destinations. Technically a telephony portal is usually composed of a web site that features IP telephony operators, and various services that can ... Fi GSM handset or your Wi Fi PDA. You can download the software from the telephony portal web site it is delivered with the features you have selected from the web site. Telephony portal example Go SIP Category Telephony ... more details
Digital telephony is the use of digital electronics in the provision of digital telephone services and systems. Since the 1960s a digital core network has almost entirely replaced the old Analog signal analog system, and much of the access network has also been digitized. Digital telephony was introduced to provide voice services at lower cost, but was then found to be of great value to new network services such as ISDN that could use digital facilities to transfer data speedily over telephone lines. Milestones in digital telephony This is a highly compressed list of milestones in digital telephony, in roughly chronological order. This should be expanded into a fully developed article early experiments with pulse code modulation in telephony the 8 bit, 8kHz standard is developed Nyquist s theorem and the standard 3.5kHz telephony bandwidth DS0 as the basic digital telephony bitstream standard non linear quantization A law vs. law , and transcoding between the two bit error rate and intelligibility first practical digital telephone systems put into service the U.S. T carrier system and the European E carrier system developed to carry digital telephony introduction of space time switching in fully digital electronic switching system s replacement of tone signaling with digital signaling for trunks in band signaling vs. out of band signaling the problem of bit robbing development ... in the digital environment introduction of digital mobile telephony, specialized compression algorithms ... telephony, and digital termination at the ISP, on modem performance voice over IP as a carrier ... of dial up Internet access expected convergence of VoIP , mobile telephony, etc. flattening of Telecommunications tariffs telephony tariff s, increasing moves towards flat rate pricing as the marginal cost of telephony drops further and further See also Telephone Telephony Multiplexing Further reading John Bellamy. Digital Telephony 3rd Edition, 2000 . Category Telecommunications systems telecomm ... more details
Unreferenced date April 2009 Cable telephony is a specialized form of digital telephony over cable TV networks accomplished by installing a special telephone interface at the customer s premises that converts the analog signals from the customer s in home wiring into a digital signal, which is then sent over the cable connection to the company s switching center, where it is connected to the PSTN . Emergency calls The biggest obstacle to cable telephone service is the need for nearly 100 reliable service for emergency call s. PacketCable , one of the emerging standards being developed for digital cable telephony, seems to be the most promising and able to work with the quality of service demands of Plain old telephone service traditional analog telephone service . Advantage The biggest advantage to digital cable telephone service is similar to the advantage of digital cable television, namely that data can be compressed, resulting in much less bandwidth used than a dedicated analog circuit switched service. Other advantages include better voice quality and perhaps future integration to a VoIP network providing cheap or unlimited nationwide and international calling. In most cases, digital cable telephone service is separate from broadband Internet access service being offered by many cable companies and does not rely on IP traffic or the Internet . Category Telephony Category Cable television technology de Voice over Cable Disadvantage The biggest disadvantage to digital cable telephone service is similar to the disadvantage of cable Internet access , namely that the medium is shared, resulting in occasional delays and drops when high volumes of bandwidth are used or in some cases shared with entire neighborhoods. These outages are typical during the prime time parts of the day, when heavy Internet usage on top of HD viewing and Internet streaming devices can make telephone ... operational. Category Telephony Category Cable television technology de Voice over Cable ... more details
A ringing signal operates the bell in a telephone , to alert the user to an incoming telephone call . Telephone bells are rung by impressing a 105 volt RMS 20 Hertz sine wave across the tip and ring conductors of the subscriber line. This signal is produced by a Ringing Generator at the central office. When the subscriber line is called, a relay on the subscriber line card connects the Ringing Generator to the subscriber line. The exchange also sends a ringback tone to the calling party . When the called party answers by taking the telephone handset off the switchhook , the subscriber s telephone draws direct current from the central office battery. This current is sensed by the line card and the ringing relay is de energized. Category Telephony signals ... more details
Phone Fashion Show Bot generated title ref This aspect of the mobile telephony business is, in itself ... has resulted in the intrusion of telephony into situations where it was previously not used. This has ... principal ways to pay for mobile telephony the prepaid mobile phone pay as you go model where conversation ... In the history of mobile phones early days of mobile telephony , the mobile phone operator operators ... more details
Packet concatenation is a computer networking optimization that coalesces multiple packet information technology packets under a single header. DEFAULTSORT Packet Concatenation Category Computer networking Category Packets information technology Compu network stub ... more details
Sydney Packet may refer to Sydney Packet London Sydney Packet London , a ship owned by Alexander Birnie & Co. of London, involved in trading with New South Wales Sydney Packet 1826 1837 Sydney Packet 1826 1837 , a two masted schooner of 84 tons, built in Sydney, Australia, in 1826 and captained by James Bruce later purchased by John Jones 1809 1869 , and outfitted as a bay whaler wrecked at Moeraki, Otago, 17 July 1837. shipindex et Sydney Packet ... more details
Packet injection is a computer networking term which refers to sending a Packet information technology packet on a network into an already established connection, usually by a party not otherwise participating in the said connection. This is accomplished by Packet crafting crafting a packet using raw socket s. Sometimes IP address spoofing is used. Software A popular packet injection application for wireless networks is aireplay ng http www.aircrack ng.org doku.php?id aireplay ng&DokuWiki a96e889dd81ae5677cf2eaa686569563 , which is part of the aircrack ng suite. Other packet injectors are Nemesis, pcap , Winsock , Void11 , CommView for WiFi Packet Generator , file2air , AirJack , and libradiate . See also Raw socket Packet crafting Packet sniffer External links http www.packeteditor.com PacketEditor http wirelessdefence.org Contents Void11Main.htm Void11 http wpepro.net Winsock Packet Editor http nemesis.sourceforge.net Nemesis http www.security freak.net packet injection packet injection.html Packet Injection using raw sockets http www.aircrack ng.org aircrack ng Category Packets information technology comp stub it Packet injection ... more details
Packet crafting is a technique that allows Network administrator network administrators or Hacker computer ... system or network. This is done by manually generating Packet information technology packets ... Packet Crafting accessdate 2010 08 01 ref Testing may target the firewall, Intrusion detection system ... cite web last Poor first Mike url http www.inguardians.com research docs packetfoo.pdf title Packet ... by using a packet generator or packet analyzer which allows for specific options and Flag computing flags to be set on the created packets. The act of packet crafting can be broken into four stages Packet Assembly, Packet Editing, Packet Play and Packet Decoding. ref name zereneh ref name poor Packet Assembly Packet Assembly is the creation of the packets to be sent. Some popular programs used for packet assembly are Hping , Nemesis software Nemesis , http ostinato.googlecode.com Ostinato , http packetbuilder.net Cat Karat packet builder , Scapy and Yersinia computing Yersinia . ref name sectools cite web url http sectools.org packet crafters.html title Top 4 Packet Crafting Tools publisher ... packet may be created with a set of erroneous flags to ensure that the target machine sends a RESET command or that the firewall blocks any response. ref name zereneh ref name poor Packet Editing Packet Editing is the modification of created or captured packets. This involves modifying packets in manners which are difficult or impossible to do in the Packet Assembly stage, such as modifying the payload of a packet. ref name poor Programs such as Netdude allow a user to modify recorded packets ... in packet streams which may be stored in pcap files to be replayed later. Packet Play Packet Play or Packet ... from Packet Assembly and Editing or from caputed network attacks. This allows for testing of a given ... since it is capable of taking a stored packet stream in the pcap format and sending those packets at the original rate or a user defined rate. Some packet analyzers are also capable of packet replay ... more details
Unreferenced stub auto yes date December 2009 Orphan date December 2009 A Chernobyl packet is a packet information technology network packet that induces a broadcast storm or some other kind of network meltdown . The term was named after the April 1986 Chernobyl disaster nuclear accident at Chernobyl . The typical scenario involves an Internet Protocol IP Ethernet datagram that passes through a Gateway computer networking gateway with both source and destination Ether and IP address set as the respective broadcast addresses for the subnetwork s being gated between. See also Christmas tree packet Martian packet DEFAULTSORT Chernobyl Packet Category Packets information technology Compu network stub ... more details
Mergeto Packet boat date October 2010 A packet ship was originally a vessel employed to carry post office mail packets to and from British embassies, colonies and outposts. In sea transport, a packet service is a regular, scheduled service, carrying freight and passengers. The ships used for this service are called packet ship s or packet boats, the seamen are called packetmen and the business is called packet trade . Packet can mean a small parcel but, originally meant a parcel of important correspondence or valuable items, for urgent delivery. ref Oxford English Dictionary Packet blockquote A small pack, package, or parcel. In later use freq. the container or wrapping in which goods are sold packaging a bag or envelope for packing something in. Also the contents of a packet. In early use ... derives from the English term Packet Boat , but means a large ocean liner. Image The Well Known Packet Ship..jpg thumb right 200px Poster advertising a packet service, Greenock, Scotland to New York, 1823 This sense became extended to mean any regularly scheduled ship, carrying passengers, as in packet trade. The word packet is frequently modified by the destination, e.g. Sydney packet, or by motive force, e.g. Steam packet . History Many states, civilisations and organisations set up mail ... on some routes. The UK General Post Office developed a Post Office Packet Service packet .... Their services retained the name Packet . Packet shipping companies included Baltimore Steam Packet Company Black Ball Line trans Atlantic packet City of Dublin Steam Packet Company Cunard Line Isle of Man Steam Packet Company Liverpool Packet Woolwich Steam Packet Company Robert Kermits Red Star Line References reflist See also Post Office Packet Service Mail steamer Dispatch boat Packet boat Packet trade Category Packet sea transport External links http www.xjt60.dial.pipex.com Falmouth Packet ... Postal system Category Ship types Category Packet sea transport Category Philatelic terminology ... more details
The Columbus Packet , also known as The Packet , is a weekly newspaper published in Columbus, Mississippi Columbus , Mississippi United States USA . It was founded in 1991 by editor and publisher, Roger Larsen. Starting in July 2010 Colin Krieger took over the position as editor and publisher of The Columbus Packet with Roger Larsen remaining on as a columnist. ref name Packet staff cite news accessdate 2011 02 14 url http packet media.com staff date February 14, 2011 title Staff publisher The Columbus Packet ref The Packet is published once a week on Thursdays. It focuses on stories and advertisements of local interest, and has grown rapidly in circulation in recent years. As of October 2008, it has a circulation of over 11,000. ref name Packet circulation cite news accessdate 2008 10 13 url http myweb.cableone.net columbuspacket subscribe.html date October 2, 2008 title Statement of Ownership, Management, and Circulation publisher The Columbus Packet ref A particular focus of the paper has been to increase media exposure of the affairs of local government in the Lowndes County, Mississippi Lowndes County area. The Packet considers its main competition to be the local daily, The Commercial Dispatch . Notes references References cite web accessdate 2008 10 13 url http www.mspress.org newspapers item.php?id 30 title Columbus Packet work Full Newspaper Listing publisher Mississippi Press Association External links http myweb.cableone.net columbuspacket The Columbus Packet DEFAULTSORT Columbus Packet, The Category Columbus, Mississippi Category Newspapers published in Mississippi Mississippi newspaper stub ... more details
Infobox software name Packet Tracer logo File Cisco Packet Tracer Icon.png screenshot File Cisco Packet Tracer.png 200px caption Cisco Packet Tracer 5.0 in Windows 7 collapsible author developer Cisco Systems released Start date YYYY MM DD discontinued latest release version 5.3.1 latest release date Start date and age YYYY MM DD latest preview version latest preview date Start date and age YYYY MM DD frequently updated programming language operating system Microsoft Windows and Debian Debian Like Linux platform size language status genre license website http www.cisco.com www.cisco.com Packet Tracer is a Cisco network emulation router emulator that can be utilized in training and education, but also in research for simple network simulator computer network simulations . The tool is created by Cisco Systems and provided for free distribution to faculty, students, and alumni who are or have participated in the Cisco Academy program. The purpose of Packet Tracer is to offer students and teachers .... Packet Tracer versions Packet Tracer is currently at version 5.3.1 and can be obtained from the http www.cisco.com web learning netacad course catalog PacketTracer.html Packet Tracer website . The software ... Flash Player 6.0 or higher Packet Tracer features The current version of Packet Tracer supports ..., to the extent required by the current CCNA curriculum. While Packet Tracer aims to provide ... found within the actual hardware running a current Cisco IOS. Thus, Packet Tracer is unsuitable .... Use in education Packet Tracer is commonly used by Cisco Networking Academy students working towards ... by Cisco to be used only as a learning aid, not a replacement for Cisco routers and switches. Packet ... http www.packettracernetwork.com Packet Tracer 5 resources tutorial, labs, ... Category Cisco products network software stub cs Packet Tracer es Packet Tracer mk Packet Tracer pl Packet Tracer pt Packet Tracer ro Cisco Packet Tracer ru Cisco Packet Tracer ... more details
Cleanup date February 2009 A Martian packet is an Internet Protocol IP Packet information technology packet which specifies a source or destination address that is Reserved IP addresses reserved for special use by Internet Assigned Numbers Authority IANA and cannot actually originate as claimed or be delivered. ref name RFC1812 RFC 1812 Requirements for IP Version 4 Routers ref Martian packets commonly arise from IP address spoofing in denial of service attack s, ref name RFC3704 RFC 3704 Ingress Filtering for Multihomed Networks ref but can also arise from network equipment malfunction or misconfiguration of a Host network host . ref name RFC1812 The name is derived from packet from Mars , a place where packets clearly can not originate. ref cite web url http www.catb.org jargon html M martian.html title Jargon File martian ref Examples of Martian packets are ref name RFC5735 RFC 5735 Special Use IPv4 Addresses ref A packet with a source or destination IPv4 address in the ranges 10.0.0.0 8, 172.16.0.0 12, or 192.168.0.0 16, when not participating in a private network . An incoming or outgoing packet whose source or destination address is in the range 127.0.0.0 8, which is reserved for loopback within the host. An incoming packet with a destination address of 255.255.255.255 32, which is reserved for internal broadcast. An incoming or outgoing packet with a Bogon filtering Bogon source or destination address in an as yet unallocated range, or in the future use range 240.0.0.0 4. ref name IANA cite web url http www.iana.org assignments ipv4 address space title IANA IPv4 Address Space Registry ref References references See also Bogon filtering Christmas tree packet Chernobyl packet DEFAULTSORT Martian Packet Category Packets information technology Category Denial of service attacks compu network stub de Martian Packet ... more details
The Packet Newspapers are a series of weekly local newspaper s in west Cornwall UK owned by the Newsquest Group. The titles include The Camborne and Redruth Packet incorporating the Redruth and Camborne Tinner The Falmouth, Cornwall Falmouth Packet The Helston Packet The Truro Packet The range of titles started with the Falmouth Packet, launched in 1855 and named after the Packet mail service which made the port of Falmouth the premier centre of international communications for 150 years from 1688 onwards. The newspaper came into being as the Packet service died out, and was published initially as a local journal carrying national and international news. For many years it was owned by J H Lake and Co., a jobbing printer, but was later bought by the Beaverbrook Express Newspapers group. Folklore maintains that the then boss of the Daily Express, Max Aitken, a keen yachtsman, acquired the paper because he thought it came with a permament mooring in Falmouth Harbour. During the Beaverbrook years, the Packet group grew to include ten titles five paid for titles, and five free covering the whole of West Cornwall. Among them were the St Ives Packet, the Penzance Packet, the Penryn Packet and the Cornwall Courier at Bodmin. Along with the Kidderminster Shuttle and the Royston Crow, the Falmouth Packet was rated among the most unusual and memorable newspaper titles in Britain. Among its trainee reporters was Nicholas Coleridge, later to be head of the Conde Nast magazine empire. Probably its longest serving editor was Jimmy Prior, who occupied the chair for 25 years spanning the Second World War. He was 74 years old when he bequeathed the job, along with a huge pile of copy , to Alan Symonds, a young Falmothian just back from war service, who was to retain the position until the mid ... editorship. The Packet group was rationalised under Newsquest ownership, with a reduction of the number of titles. The Falmouth Packet remains the group flagship. Cornwall stub Category Newspapers published ... more details
Packet trade generally refers to any regularly scheduled cargo, passenger and mail trade conducted by ship. ref http www.umassd.edu specialprograms CaboVerde cvpacket.html Cape Verde Packet Trade ref The ships are called packet boats as their Packet sea transport original function was to carry mail. ref http www.yourdictionary.com packet boat your dictionary.com packet boat ref United States See also Maritime history of the United States In the United States , packet trade is used most often Citation needed date October 2007 to refer to the Atlantic Ocean Atlantic or Western Ocean packets which traded with Europe and Africa most notably Citation needed date October 2007 Cape Verde . In the United States, packet boats , smaller vessels designed for domestic use, also were extensively used in the 19th century for internal mail and scheduled service using rivers and canals, such as along the Erie Canal , which cut travel time across New York state in half the Pennsylvania Canal , the James River and Kanawha Canal , and navigable rivers. During the 18th century ships carrying cargo, passengers and mail between Europe and America would sail only when they were full. Citation needed date October 2007 Starting in the early 19th century, as trade with America became more common, schedule ... packet Black Ball line began regularly scheduled trips between Britain and the United States. These packet ... 2007 This migration built strong ties between the two locations. A strong packet trade between ... ship built in Van Diemens Land in 1812 was named the Henrietta Packet by virtue of the fact that she ... South Wales . From the 1830s the term steam packet was commonly applied to early steam ship services ... waterfront establishments around Australia bearing such names as the Steam Packet Inn or Steam Packet ... Portal Nautical Isle of Man Steam PacketPacket sea transport For further reading Dave Hollett, Fast .... References Reflist DEFAULTSORT Packet Trade Category Packet sea transport Category Packet river ... more details
A packet generator or packet builder is a type of software that generates random Packet information technology packets or allows the user to construct detailed custom packets. Packet generators utilize raw socket s. This is useful for testing implementations of IP stacks for Software bug bugs and Vulnerability computing security vulnerabilities . Comparison General Information class wikitable sortable style width auto text align center font size smaller table layout fixed Title Author OS Interface Link License AnetTest Anton aka kronos256 Windows, Unix CLI http anettest.sourceforge.net AnetTest GPL Bit Twist ayeowch aka det re Windows Linux BSD CLI http bittwist.sourceforge.net Bit Twist GPLv2 Cat Karat packet builder Valery Diomin, Yakov Tetruashvili Windows GUI http packetbuilder.net Cat Karat packet builder Packet Builder License ref Custom free for personal use ref Colasoft Packet Builder Colasoft Windows GUI http www.colasoft.com packet builder Colasoft PacketPacket Builder License Freeware ref http www.colasoft.com download products download packet builder.php ref Nemesis software Nemesis Jeff Nathan Windows, Unix CLI http nemesis.sourceforge.net Nemesis BSD Ostinato software Ostinato pstavirs Windows Linux BSD MacOSX GUI http ostinato.googlecode.com Ostinato GPLv3 Pktgen Linux Foundation Linux CLI http www.linuxfoundation.org en Net Pktgen Pktgen ? packETH Miha Jemec aka jemcek Linux, Windows GUI http packeth.sourceforge.net packETH GPLv2 pierf Pieter Blommaert Windows ... DoS targa3.c targa3 ? Winsock Packet Editor ? Windows ? http wpepro.net Winsock Packet Editor ... sortbottom Title Author OS Interface Link License references See also Packet crafting Packet analyzer ... Bit Twist http packetbuilder.net Cat Karat packet builder http www.colasoft.com packet builder Colasoft Packet Builder http www.youtube.com watch?v O pk5Wr2 8I Video Generate Packets to Test Firewall ... UMPA http wpepro.net Winsock Packet Editor Category Packets information technology Category ... more details
multiple issues disputed May 2008 POV May 2008 unreferenced July 2008 optical disc authoring Packet writing or IPW original term Incremental Packet Writing , is an optical disc recording technology used to allow write once and rewritable CD and DVD media to be used in a similar manner to a floppy disk from within the operating system , i.e., it allows users to create, modify, and delete files and directories on demand without the need to optical disc authoring burn a whole disc. Packet writing technology achieves this by writing data in incremental blocks rather than in a single block. The most common file system for packet writing systems is the Universal Disk Format UDF format. Deleting files and directories of a CD R using packet writing technology does not recover the space occupied by these objects but are simply marked as being deleted. Similarly, changes to files cause new instances to be created instead of replacing the original files. Because of this, the available space on a medium using packet writing technology will slowly diminish every time its content is modified. For rewritable discs, however, this doesn t necessarily occur there exists technology that allows them to be used as truly removable storage media, fully and freely writable see Universal Disk Format UDF . Due to the characteristics of optical rewritable media such as CD RW s and DVD RW s, the ability of data sectors to hold their contents wear out by changing them frequently since re crystallized alloy de crystallizes . To cope with this the packet writing system can remap bad sectors with good sectors as required. These bad sectors cannot be recovered by formatting the media. Software Packages Drag to Disc former DirectCD Nero InCD Drive Letter Access Uncategorized date March 2011 hardware stub ca IPW cs Packet writing de Packet Writing es Incremental Packet Writing it Packet writing ja ... more details
In a packet based communications network, packet aggregation is the process of joining multiple packets together into a single transmission unit, in order to reduce the overhead associated with each transmission. Packet aggregation is useful in situations where each transmission unit may have significant overhead syncword preamble s, headers, cyclic redundancy check , etc. or where the expected packet size is small compared to the maximum amount of information that can be transmitted. In a communication system based on a layered OSI model , packet aggregation may be responsible for joining multiple MSDU s into a single MPDU that can be delivered to the physical layer as a single unit for transmission. The ITU T G.hn standard, which provides a way to create a high speed up to 1 Gigabit s Local area network using existing home wiring Power line communication power lines , phone lines and Ethernet over coax coaxial cables , is an example of a protocol that employs packet aggregation to increase efficiency. See also Packet segmentation Frame aggregation Category Packets information technology ... more details
Image Packet Schooner.jpg thumb 175px upright 1793 newspaper ad for a packet schooner, Chestertown, Martyland Mergefrom Packet sea transport date March 2010 Mergefrom Packet ship date October 2010 Mergefrom Packet trade date October 2010 Mergefrom Post Office Packet Service date October 2010 Packet boats were small boats designed for domestic mail, passenger and freight transportation in the United States along rivers and canals. They were extensively used in the 19th century and featured regularly scheduled service. When ships were put into such service in the 18th century across the Atlantic Ocean between Great Britain and the colonies, services were called the packet trade . History When the Erie Canal opened in New York state in 1825 along the Mohawk River , demand quickly rose for travelers to be accommodated. Packet boats were typically narrow about 14 feet to accommodate canals, but might be 70 90 feet long. In the cabin space they could carry up to 60 passengers. Packet boats were drawn through the Erie Canal by teams of two or three horses or mules. Compared to overland travel, the boats cut journey time in half for the journey and were much more comfortable. Travelers could get from New York City to Buffalo in ten days, with a combination of sailing and packet boats. Some passengers took the boats both to see the Erie Canal and the natural landscapes. Significantly, thousands of others used packet boats to emigrate to Ohio and other parts of the Midwest . These boats ... such as the Chenango Canal . Packet boats were also popular along the James River and Kanawha Canal ... War , the packet boat Marshall carried the body of Confederate General Stonewall Jackson from Lynchburg ... archive articles packetboat.htm Deborah Fitts, Hull of Packet Boat That Carried Jackson s Body ... Packet boat on canal, drawing, at http www.chenango.history.museum civilwarpic.jpg Woodcut print at http ... Packet Boat Category Packet river transport ro Pachebot ru ... more details
A packet switch is a node networking node in a telecommunications network network which uses the packet switching paradigm for data communication. Packet switches can operate at a number of different levels in a protocol suite although the exact technical details differ, fundamentally they all perform the same function they store and forward packet information technology packet s. One common class of contemporary packet switches are the network bridge bridge and network hub , which interconnect multiple network segments at the data link layer . Another is the router , a device which operates at the internetwork layer , and connects dissimilar kinds of networks, such as serial line s and local area network s. Generally, packet switches only perform communication related functions, but in some systems the computers which performed the packet switching function were also used for data storage and computation. Originally, packet switches were built around standard minicomputer s. Today, almost all packet switches are specialized hardware devices, ranging in size and performance from small local hubs up to the large switching systems used by major Internet service provider s. However, software is available which allows a personal computer to function as a low performance packet switch. History The first operational packet switch was the Interface Message Processor IMP IMPs were the devices that made up the ARPANET , the first packet switching network. The IMP was developed at BBN Technologies Bolt, Beranek and Newman BBN as part of their contract to build out the original ARPANET ... June 22, 2007. ref The IMP and the packet switches that followed it are what make the Internet possible. The next generation of early packet switches were those for X.25 , which were operational ... packet switches were implemented on Prime commercial minicomputers, followed by a purpose built switch using multiple 6502 processors. See also Network switch LAN switching Packet switching References ... more details
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