primary sources . please improve this by adding secondary or tertiary sources . october 2008 learn how and when to remove this template message teles ag informationstechnologien type ag industry telecommunications next generation networks founded berlin germany 1983 headquarters berlin germany key people sigram schindler ceo oliver olbrich coo frank paetsch cto website www.teles.com en teles.html teles ag informationstechnologien is a provider of equipment solutions and services to fixed fixed mobile convergence and next generation networking ngn service providers . the company was founded in 1983 as teles gmbh by professor dr. ing . sigram schindler in close cooperation with the technical university of berlin . professor schindler lectured in telecommunications at the university until 1998 . in 1997 he was voted high tech manager of the year by manager magazine in germany . 1 active in voip technology development since 1996 the company s main development and operational focus lies in the areas of ims and ngn . teles supplies service providers with complete class 4 and class 5 ngn softswitch solutions . teles ngn solution is a standard based scalable architecture aimed at minimizing integration time and allowing quick deployment . the solution includes hosted voice functionality which enables residential voip services hosted pbx ip centrex services fixed mobile convergence ip trunking and additional value added applications . classical ngn pstn applications like wholesale long distance and ngn backbone services are also available with this solution . 2 the teles product portfolio also includes voip gateways and mobile gateways for gsm cdma and umts networks . 3 history edit 1990 isdn product development 1992 isdn pbx development 4 1993 least cost router development 1996 first major voip patent intrastar dynamic pstn fallback 5 6 1998 teles is floated on the stock market and becomes an ag public limited company 1998 introduction of clustered switching system for pstn 2000 first public network integrating voip using h. 323 protocol 2001 first highly integrated gsm and cdma mobile gateway developed 2002 first integrated mobile voip gateway developed 2003 first centralized sim server for mobile gateways developed 7 2004 strato ag a webhosting teles subsidiary is sold to freenet 8 references edit http www.teles.de en about us management board http www.teles.de en products and solutions next generation networks http www.teles.de en products and solutions access gateways http kimbaone.de 000001985c0a4f46e 03c19899e014aa701 03c19899e1003451d index.php4 in german http www.arcadiz.com content assets suppliers teles voipbox br.pdf http www.telecom.paper.nl news article.aspx id 100355 & nr http www.patentstorm.us patents 7145902.html http www.heise.de english newsticker news 54200 external links edit official website retrieved from https en.wikipedia.org w index.php title teles & oldid 648632600 categories telecommunications companies of germanyict service providershidden categories articles lacking reliable references from october 2008all articles lacking reliable referencespages using infobox company with unsupported parametersofficial website different in wikidata and wikipedia navigation menu personal tools not logged intalkcontributionscreate accountlog in namespaces article talk variants views read edit view history more search navigation main pagecontentsfeatured contentcurrent eventsrandom articledonate to wikipediawikipedia store interaction helpabout wikipediacommunity portalrecent changescontact page tools what links hererelated changesupload filespecial pagespermanent linkpage informationwikidata itemcite this page print export create a bookdownload as pdfprintable version languages deutschespa ol edit links this page was last modified on 24 february 2015 at 14 36 . text is available under the creative commons attribution sharealike license ; additional terms may apply . by using this site you agree to the terms of use and privacy policy . wikipedia is a registered trademark of the wikimedia foundation inc. a non profit organization . privacy policy about wikipedia disclaimers contact wikipedia developers cookie statement mobile view