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lts at the louise m davies symphony hall in san francisco the hall s large volume and seating capacity initially resulted in less than ideal results kirkegaard associates completed acoustical renovations in 1992 at a cost of us 10 million which resulted in substantial improvement 25 in the 1960s and 1970s experts at the company examined audio tapes related to notable events in u s history including the john f kennedy assassination dictabelt recording 26 an audio recording from the 1970 kent state shootings and during the 1974 watergate scandal the tape of president richard nixon that had 18 5 minutes erased 27 the substantial calculations required for acoustics work led to an interest and later business opportunities in computing bbn was a pioneer in developing computer models of roadway and aircraft noise and in designing noise barriers near highways 28 some of this technology was used in landmark legal cases where bbn scientists were expert witnesses 29 in early 2004 bbn applied its acoustics expertise to design develop and deliver the boomerang shooter detection system in a little over two months to combat the sniper threat us troops faced in operation iraqi freedom the system immediately pinpoints the location of hostile fire since then more than 11 000 boomerang systems have been deployed by u s and allied forces computer technologies edit bbn bought a number of computers in the late 1950s and early 1960s notably the first production pdp 1 from digital equipment corporation on which it implemented the bbn time sharing system 1962 9 ray tomlinson of bbn is widely credited as having invented the first person to person network email in 1971 30 and the use of the sign in an email address 31 32 33 bbn has had a very distinguished career in natural language understanding 34 35 ranging from speech recognition through machine translation and more recently machine understanding of the causality of events and accurate forecasts for the intelligence advanced research projects activity iarpa 36 bbn s education group led by wally feurzeig created the logo programming language conceived by bbn consultant seymour papert as a programming language that school age children could learn 37 other well known bbn computer related innovations include interlisp programming language the tenex operating system and the colossal cave adventure game bbn also is well known for its parallel computing systems including the pluribus and butterfly computers which have been used for such tasks as warfare simulation for the u s navy 38 bbn also developed the rs 1 rs explore rs discover and the cornerstone statistical software systems and played a pioneering role in the development of today s semantic web including participating in the darpa agent markup language project and chairing web ontology language standardization networking technologies edit the internet c 1985 bbn built and operated the milnet arpanet satnet and wideband networks bbn was involved in building some of the earliest computer networks including the implementation and operation of the arpanet 39 33 and its interface message processors 40 nb 1 as well as satnet prnet milnet simnet the terrestrial wideband network the defense simulation internet csnet and nearnet in the course of these activities bbn researchers invented the first link state routing protocol bbn was a key participant in the creation of the internet it was the first organization to receive an autonomous system number as1 for network identification 42 asns are an essential identification element used for internet backbone routing lower numbers generally indicate a longer established presence on the internet as1 is now operated by level 3 communications following their acquisition of bbn s genuity internet service provider bbn registered the bbn com domain on 24 april 1985 making it the second oldest domain name on the internet 43 44 in addition bbn researchers participated in the development of tcp created the voice funnel an early predecessor of voice over ip helped lead the creation of the first email security standard privacy enhanced mail pem chaired development of the core internet protocol security suite ipsec standards and performed extensive work to secure the border gateway protocol bgp bbn also created a series of mobile ad hoc networks starting in the 1970s with darpa s experimental prnet and suran systems later bbn efforts included the networking portions of the near term digital radio ntdr and high capacity data radio hcdr the wideband networking software in the joint tactical radio system and the wireless network after next wnan it also created the networking portions of the u s army s mobile subscriber equipment mse and canada s iris digital communications system mobile ad hoc networks prnet first mobile ad hoc network sponsored by arpa suran follow on to prnet experiments also sponsored by arpa mobile subscriber equipment mse tactical internet for the us army iris digital communications system tactical voice data internet for the canadian army near term digital radio ntdr first fielded mobile ad hoc network high capacity data radio hcdr ntdr version for the british army joint tactical radio system jtrs wideband networking waveform wireless network after next wnan experimental tactical ad hoc network sponsored by darpa satellite networks satnet early data satellite network linking arpanet nodes incorporated into first internet demonstrations acts gigabit satellite network experimental network supporting a wide range of high bandwidth networking experiments from 1993 2004 celestri network architecture for never launched internet constellation follow on to the iridium satellite constellation connexion by boeing networking architecture studies discoverer ii networking studies for never launched leo constellation of radar satellites sbirs low network architecture for never launched space based infrared system leo constellation tsat network architecture for the ipv6 transformational satellite communications system constellation notable bbners edit a number of well known computer luminaries have worked at bbn including daniel bobrow ron brachman john seely brown edmund clarke allan collins william crowther john curran chip elliott wally feurzeig ed fredkin bob kahn steve kent 45 j c r licklider john makhoul john mccarthy marvin minsky dan murphy severo ornstein seymour papert craig partridge radia perlman richard pew oliver selfridge cynthia solomon warren teitelman bob thomas ray tomlinson bill woods and peiter mudge zatko former bbner dedre gentner is alice gabrielle twight professor of psychology at northwestern university former board members include jim breyer anita k jones and gilman louie spin offs and mergers edit in 1971 bbn s telcomp subsidiary was sold in the 1970s bbn created telenet inc to run the first public packet switched network in 1983 bbn instruments was sold to vibro meter corp in 1989 bbn s acoustical consulting business was spun off into a new corporation acentech incorporated located across the street from bbn headquarters in cambridge 46 in 1994 lightstream corp a joint venture with ungermann bass inc created in 1992 to manufacture asynchronous transfer mode atm switches was sold to cisco systems inc for us 120 million bbn formed an early internet service provider in 1994 as its bbn planet division 47 previously traded as bbn on the stock market the company was purchased by gte in 1997 as a wholly owned subsidiary 48 bbn planet was joined with gte s national fiber network to become gte internetworking powered by bbn when gte and bell atlantic merged to become verizon in 2000 the internet service provider division of bbn was included in assets spun off as genuity to satisfy federal communications commission fcc requirements leaving behind the remainder of bbn technologies genuity was later acquired out of bankruptcy by level 3 communications in 2003 49 in march 2004 verizon sold the remainder of the company by then known as bbnt solutions llc to a group of private investors from accel partners general catalyst partners in q tel and bbn s own management 50 making bbn an independent company for the next five years in september 2009 raytheon entered into an agreement to acquire bbn as a wholly owned subsidiary 51 the acquisition was completed on 29 october 2009 52 and the company was valued at approximately us 350 million 53 bbn owned the domain bbn com the second oldest currently registered domain name on the internet which ran continuously from april 1985 to mid december 2019 digital force technologies dft of san diego california was a wholly owned bbn subsidiary purchased in june 2008 and spun out in 2018 54 former bbn employees have formed about a hundred startup companies including parlance corporation and everyzing 55 56 locations and subsidiaries edit as of 2013 raytheon bbn maintains offices in 57 cambridge highlands cambridge massachusetts columbia maryland st louis park minnesota o fallon illinois newport east middletown rhode island near naval station newport 58 rosslyn arlington virginia near washington d c see also edit oldest registered domain names darwars a military simulation game developed with darpa since 2003 george g robertson richard e hayden interlisp notes edit 1 2 the same idea had earlier been independently developed by donald davies who was the first to implement packet switching in the local area npl network 41 references edit bbn corp international directory of company histories president obama honors nation s top scientists and innovators whitehouse gov 21 december 2012 retrieved 11 february 2013 via national archives this article incorporates text from this source which is in the public domain beranek leo founding a culture of engineering creativity walden nickerson 2012 pp 3 4 hafner lyon 1998 p 82 1 2 3 beranek leo 2005 bbn s earliest days founding a culture of engineering creativity ieee annals of the history of computing 27 2 6 14 doi 10 1109 mahc 2005 20 s2cid 12645672 henderson harry 2003 licklider j c r a to z of computer scientists new york facts on file p 163 isbn 1438109180 hafner lyon 1998 p 84 williams paul flo digital computing timeline vt100 net retrieved 20 february 2020 1 2 hafner lyon 1998 pp 84 85 hafner lyon 1998 p 85 aspray william 2 march 1989 an interview with john mccarthy pdf hafner lyon 1998 pp 74 87 90 1 2 hafner lyon 1998 p 86 hafner lyon 1998 p 94 hafner lyon 1998 p 168 hafner lyon 1998 p 259 hafner lyon 1998 p 261 hafner lyon 1998 p 265 geni project office at bbn technologies announces 115 m in nsf funding archived from the original on 5 february 2013 retrieved 6 january 2013 hafner lyon 1998 p 91 dave walden looking back at the arpanet effort 34 years later internet history livinginternet com retrieved 22 december 2018 hafner lyon 1998 p 103 hafner lyon 1998 pp 103 151 hafner lyon 1998 p 153 niekerken bill van 29 september 2020 davies symphony hall debuted with fanfare 40 years ago but the sound wasn t a hit san francisco chronicle retrieved 29 september 2020 barger james e robinson scott p schmidt edward c wolf jared j january 1979 analysis of recorded sounds relating to the assassination of president john f kennedy bolt beranek and newman retrieved 20 february 2020 hafner lyon 1998 p 83 technologies avoke analytics by raytheon bbn history avoke com retrieved 2 february 2018 reilly edwin d 2003 milestones in computer science and information technology greenwood publishing group p 32 isbn 9781573565219 bbn scientists expert witness tomlinson ray 1971 the first email a neat idea corporate website bbn archived from the original on 12 may 2012 retrieved 19 june 2012 tomlinson ray 1971 the sign icon for the digital age corporate website bbn archived from the original on 12 may 2012 retrieved 19 june 2012 the father of email archived from the original on 27 september 2017 retrieved 8 april 2017 official biography raymond tomlinson ralph weischedel et al research and development in natural language processing at bbn laboratories in the strategic computing program 1986 r weischedel natural language understanding at bbn ieee annals of the history of computing vol 28 no 1 jan march 2006 pages 46 55 raytheon bbn led team to develop event prediction system under iarpa program press release july 31 2018 hafner lyon 1998 p 87 technology services raytheon bbn technologies archived 2014 10 30 at the wayback machine bbn retrieved on 2013 07 26 r shirey august 2007 internet security glossary version 2 network working group doi 10 17487 rfc4949 rfc 4949 informational the computer history museum sri international and bbn celebrate the 40th anniversary of first arpanet transmission precursor to today s internet sri international sri com retrieved on 2013 07 26 roberts dr lawrence g may 1995 the arpanet computer networks archived from the original on 24 march 2016 retrieved 13 april 2016 then in june 1966 davies wrote a second internal paper proposal for a digital communication network in which he coined the word packet a small sub part of the message the user wants to send and also introduced the concept of an interface computer to sit between the user equipment and the packet network postel jon jim vernon january 1983 assigned numbers internet engineering task force doi 10 17487 rfc0820 rfc 820 retrieved 19 may 2011 whois record for bbn com then and now 5 oldest domain names archived from the original on 9 april 2017 retrieved 8 april 2017 internet hall of fame inducts raytheon cybersecurity expert archived from the original on 25 march 2016 retrieved 4 april 2016 acentech acoustic solutions company overview acoustical services retrieved 28 may 2012 timeline raytheon bbn technologies bbn com retrieved on 2013 07 26 gte bbn merger complete 15 august 1997 retrieved 3 january 2013 level 3 s acquisition of genuity earns court approval 27 january 2003 archived from the original on 28 july 2013 retrieved 3 january 2013 bbnt solutions acquisition finalized 1 march 2004 retrieved 3 january 2012 raytheon announces agreement to purchase bbn technologies waltham mass pr newswire 1 september 2009 retrieved 13 november 2009 raytheon completes acquisition of bbn technologies mckinney texas pr newswire 26 october 2009 retrieved 13 november 2009 raytheon buys bbn for about 350m the register 27 october 2009 retrieved 28 may 2012 bbn technologies and digital force technologies partner for growth 24 june 2008 archived from the original on 25 december 2012 retrieved 3 january 2013 bbn birthplace of 100 startups focuses on game tech 16 july 2009 retrieved 23 january 2013 history of technology transfer at bbn stephen levy ieee annals of the history of computing 27 2 pages 30 38 may 2005 contact utility raytheon bbn archived 2014 02 20 at the wayback machine bbn com retrieved on 2013 07 26 bbn technologies riedc retrieved on 2013 07 26 bibliography edit hafner katie lyon matthew 1998 1996 where wizards stay up late the origins of the internet new york touchstone ...