The NGMN Alliance is constituted through NGMN Ltd. with registered office in Reading, United Kingdom. NGMN Ltd. is represented and managed by a board of directors (Board). The current Board Members and their Alternates are presented below.

Board Members

Johan Wibergh

Group CTO, Vodafone and NGMN Chairman of the Board

Johan manages technology resources including talent development and diversity agenda and also manages the companies offshore IT shared service centre. He is responsible for all technology strategy and operations worldwide for Networks and IT, Consumer and Enterprise Product Development. He also manages the companies Research & Development capabilities including standards bodies and intellectual property. Johan is responsible for Technology Security and Customer Data Protection Strategy.

In addition Johan is responsible in his current position for all senior supplier /partner technology relationships at CEO/Senior Manager level.

Paul Berriman

Group CTO, PCCW & HKT Group

Mr. Paul BERRIMAN is the Group Chief Technology Officer of PCCW-HKT, a position which he has held since May 2007, having joined PCCW in 2002. Mr. Berriman is primarily responsible for leading the Group's product and technology roadmap and strategic development.

Mr. Berriman has over 30 years of experience in telecommunications, media and convergence and in 2009 was recognised by the IPTV World Forum with their Special Merit Award for Outstanding Industry Contribution. In 2008 he was also listed as one of the Global Telecoms Business Magazine's top 100 "most influential persons in telecoms".

Prior to joining PCCW in 2002, Mr. Berriman was the Managing Director of Arthur D. Little in Hong Kong, and was involved in telecommunications consultancy projects globally. Previously he also held executive management roles in Hong Kong Telecom, New World Telephone and Reuters.

Mr. Berriman graduated BSc from the University of Salford and an MBA from the University of Hong Kong. He is a Chartered Engineer and has previously held positions as a member Advisory Boards for Intel and Juniper Networks. He has also been a member of OFCA's (Hong Kong’s Regulator) Technical Standards Advisory Committee.

He is a Steering Committee member of the Global TD-LTE Initiative (GTI) and chairs the 3.5GHz TD-LTE Working Group within GTI.

He is also an independent non-executive director of Spark New Zealand (formerly known as Telecom Corporation of New Zealand) having joined the Board in December 2011.

Thomas Björklund

Group CTO, Tele2

Thomas Björklund has held various engineering and management positions in the Telecom Industry for more than 20 years. He started 1991-1996 in the Swedish Air Force as a Transmission Network engineer and IP Network engineer. As a very early adopter in IP engineering, Thomas joined Tele2 in 1996 as IP Network architect. Between 1998 -2008 Thomas held a key role in the expansion of the Tele2 footprint outside Sweden, both in fixed and mobile. At the most Tele2 was present in 25 countries. Since 2008 Thomas is heading the Network Strategy department for Tele2 group. He played a key role in the early implementation of LTE and other technology innovations, as well as in M&A activities for the group. Thomas and his team are now leading the Tele2 Strategy for transition into 5G and Telco Cloud

Enrique Blanco Nadales

Group CTO, Telefonica

Enrique Blanco joined Telefónica 26 years ago and has mainly developed his professional career in Telefónica de España, S.A.U.He currently serves as Global Chief Technology Officer (GCTO) of Telefónica S.A, within the Global Resources Division.He has a degree in Physics from the University Complutense of Madrid and, later on, became PhD in Physics. He holds a Master Degree in Management (PDG) from IESE Business School (University of Navarra) and received a Master Degree in Technology from the EOI.He has held several management positions within Telefónica, including responsibilities in Telefónica International, focused on Networks and Platforms. After that, he returns to Telefónica de España, S.A.U. and joined the Direction of Operations, where he performed several Director Positions linked to the development and management Systems, Company Partners, national local Networks, and, finally, he was appointed Director of Operations and Engineering, with a team of about 18.000 employees.Mr. Blanco is a member of several Boards of Directors of Telefónica Group Companies fully or partially owned by Telefónica.

Bernard Bureau

VP 5G Spectrum & Wireless Networks, TELUS


Mr. Bernard Bureau is currently responsible for the technology strategy of the wireless network infrastructure at TELUS. He oversees the spectrum strategy, wireless access & core network technology development and device certification and requirements. Since he joined TELUS in 1997, Mr. Bureau held several management positiones, including VP- Mobile Broadband Network Engineering where he led the planning and engineering teams responsible for the wireless access & core network and for the voice platforms. He played an instrumental leadership role for severalmajor projects, including the rollout of UMTS, HSPA,LTE, LTE-A VoLTE and C-RAN HetNet. He received a Bachelor degree in Engineering from Ecole Polytechnique de Montreal in 1995 and  is a member of the Ordre des ingenieurs du Québec since then.

Mark Chong

Group CTO, Singtel


Mr Chong will assume the Singtel Group Chief Technology Officer role on 1 April 2017. He was Singtel’s Chief Executive Officer, International, from January 2013 to March 2017.
He is the current Chairman of Bridge Alliance, Asia Pacific’s leading mobile alliance of eleven top-tier operators, serving over 430 million customers. From Oct 2010 to January 2013, Mark was the Chief Operating Officer of Advanced Info Service Plc (AIS), the Group’s associate in Thailand. He joined Singtel in 1997 and has held various executive positions in sales and marketing as well as being Executive Vice President of Networks. He had a previous assignment in Thailand from 1999 to 2000. Before Singtel, he was a member of the Singapore Administrative Service from 1990 to 1997. Mark represented Singtel on the Boards of Globe Telecom, Bharti Infratel, OpenNet, CSLox(Thailand) and other submarine cable joint venture companies. He graduated with a Bachelor of Electronics Engineering and Master in Research in Electronic Systems from ENSERG, Grenoble, France, on a Singapore Government scholarship. He also obtained his Master of Business Adminstration from the National University of Singapore. He is a senior fellow with the Singapore Computer Society.

Sandro Dionisi

Director of Global Advisory Services, Telecom Italia

Sandro Dionisi graduated cum laude in Electronic Engineering at the University of Rome "La Sapienza". Sandro Dionisi has over 25 years of experience in various telecommunication fields. He started working for Telecom Italia (previously SIP) in 1983, where he has been involved in several network divisions covering different levels of responsibilities. In 1999 he was nominated head of Fixed Access and Transport Network and in 2002 he was responsible for the Regional Network Territory in Italy. In 2003 Sandro was in charge of coordinating the international network infrastructures and operations of Telecom Italia for both fixed and mobile services, including Europe and Latin America. Sandro Dionisi has been an active member of several international fora and standardization bodies within ITU and ETSI. In February 2008 he was appointed Director of Telecom Italia Lab where he is in charge of research, innovation and engineering for both fixed and mobile networks within the Telecom Italia Group.

Wolfgang Fleischer

Head of Network Virtualization, Telekom Austria

Wolfgang Fleischer is with Telekom Austria Group since February 2003. He works in the Group COO area and is the responsible Head of Network Virtualization, contributing in this facility to the overall Digital Transformation of Telekom Austria Group. He oversees the technology strategy development and the technical roadmap realization for all subsidiaries of Telekom Austria Group since February 2009. He is furthermore the lead person on the areas Mobile Edge Computing (MEC) and 5G Network Evolution.

Mr. Fleischer has an overall record of 24 years in Telecommunications. He spent 11 years in product development with vendors dealing with various technologies, focusing on topics like central office switches, SDH add and drop multiplexers, ATM switches, mobile core network gear, digital film production cutting systems, and broadcast play-out servers. He worked for Philips, Lucent and Megisto Systems – a US based start-up company. By now 13 years, he spent working for the Telecommunications service provider, Telekom Austria Group, ensuring the smooth evolution of the Core and Service Networks of the TA Group operating companies. He holds a Doctor degree in Physics from the Swiss Federal Institute of Zurich (ETH Zurich) and an MBA from the Vienna Sales Manager Akademie.

Jacob Groote

Vice President Mobile Operations, KPN

After obtaining his PhD in Physics in 1990 Jacob joined KPN to take a leading role in the R&D on using artificial intelligence in a telecoms environment. Since then Jacob has held senior management positions in almost all of KPN’s business units, including CIO and Manager IT projects in the Fixed Networks division, General Manager Operations in the Business Market division and Director Process and System Development in the Carriers Services division. Since 2012 Jacob serves as Vice President Mobile Operations and is responsible for the development, roll-out and operations of KPNs mobile network in The Netherlands.

Huang Yuhong

Deputy General Manager China Mobile Research Institute, China Mobile

Huang Yuhong, graduated from Beijing University of Posts and Telecommunications (BUPT) and got her master degree in Digital Mobile Communications. She has been working for China Mobile since 1996. Huang Yuhong has been responsible for the technology introduction strategy of GSM900/1800 dual band network, GPRS, CMNeT, IP dedicated network and 3G, some specifications and trials as well as other key projects. Currently her work mainly focuses on radio technology study and standardization work related to wireless access network. In addition she is Board Alternate of NGMN.

Michael S. Irizarry

EVP and CTO Engineering and Information Services, US Cellular

Michael joined US Cellular in 2002, overseeing the company’s information systems and technology, as well as technological operations including wireless towers, network build-outs for new markets, network operations, and technological advancements. He also leads US Cellular’s information systems, strategic operations program, and enterprise program management teams. These teams focus on application development, data warehousing, wireless billing technologies, and support for data centres and end users. Prior to joining US Cellular, Irizarry held executive positions with Verizon, Bell Atlantic Mobile, Paging Network, Inc., and Motorola. He is a senior member of the Association for Computing Machinery as well as the IEEE and its communications and computer societies. Irizarry earned a bachelor’s degree in engineering from Cleveland Technical College, a master’s degree in information management and an MBA from the International School of Information Management, and a doctorate in communications technology from Capella University’s School of Business and Technology. He is also a graduate of the University of Chicago’s executive management program.

Bruno Jacobfeuerborn

Chief Technology Officer, Deutsche Telekom

Bruno Jacobfeuerborn has been Director of Technology at Telekom Deutschland GmbH since April 2010. In addition, he is Chief Technology Officer (CTO) of Deutsche Telekom AG, a position he has been holding since February 2012.


Since 1989, Bruno Jacobfeuerborn has held various managing positions at Deutsche Telekom AG. From 2002 to 2007, Bruno Jacobfeuerborn was a member of the management team in his capacity as Managing Director of Technology, IT, Procurement and, until 2004, Customer Service at T-Mobile Netherlands in The Hague. At the same time, he headed the International Service Management unit at T-Mobile International. Subsequently, he was a member of the management team and Managing Director of Technology, IT and Procurement at Polska Telefonia Cyfrowa in Warsaw until June 30, 2009. Since July 1, 2009, Bruno Jacobfeuerborn has been responsible for Technology (both mobile and fixed network) in Germany.

Sungho Jo

Director, Head of 5G Technology Lab, SK Telecom

Mr. Sungho Jo is responsible for developing and commercializing 5G Network at SK Telecom R&D. He joined SK Telecom in 1997 and worked for the network division. He has been head of 5G Technology Laboratory since 2015.

Since 2001 as a key decision maker within SK Telecom, he contributed and led various commercialization activities.

Marachel Knight

Senior Vice President, Wireless Network Architecture and Design, AT&T Inc.


Marachel Knight is Senior Vice President of Wireless Network Architecture and Design. She oversees the architecture and design of the AT&T wireless network, wireline access, mobility services, wireless device technology and tools. She has held several other leadership positions in engineering, marketing and technology operations.

Marachel serves on the board of directors of National Action Council for Minorities in Engineering, Inc. and on the advisory board of After School Matters. Marachel co-established and is a national advisor for AT&T Women of Technology and is a national board advisor for oxyGEN, an AT&T employee resource group.  Marachel also serves on the Carnegie Mellon University's Information Networking Institute Alumni Leadership.

Marachel is a licensed Professional Engineer and certified Project Management Professional. She received her master's degree in information networking from Carnegie Mellon University and holds a bachelor's degree in electrical engineering from Florida State University.

Adam Koeppe

VP of Network Technology Planning, Verizon

Adam is responsible for the infrastructure roadmap for all elements of the Verizon Wireless radio access network, enhanced packet core, and IMS core, and the Verizon customer-facing FiOS infrastructure. Additionally, his team is tasked with charting the path to future spectrum acquisitions, developing next-generation industry standards, and defining how future technology concepts, like 5G, NGPON2, and virtualized networks can become implementation realities for Verizon.

Kuo-feng Lin

Senior Executive Vice President and CTO, Chunghwa Telecom

Mr. Kuo-feng Lin currently serves as the Senior Executive Vice President and CTO at Chunghwa Telecom Co., Ltd. He previously served as the Vice President and President of Mobile Business Group from October 2009 to November 2016, and as the Manager of Taipei Branch, Mobile Business Group from April 2006 to October 2009. Mr. Lin graduated from the Taipei Institute of Technology and majored at Electronic Engineering. After a lengthy career within the Mobile Business Group, he is now responsible for the formulation, strategy and promotion of Chunghwa Telecom's communication business. Chunghwa Telecom has always fulfilled the role of telecommunication innovation and leadership within Taiwan, and through his experience and strong leadership, Chunghwa Telecom was the first to launch a commercial LTE network in Taiwan on May 29, 2014, bringing Taiwan into a new generation of high speed mobile communications.

Tommy Ljunggren

Group Director Architecture and Security, VEON

Mr Tommy Ljunggren currently holds the position as Group Director Architecture and Security at VEON Ltd in Amsterdam since May 11th 2015. He reports to Mr Yogesh Malik, Group Chief Technology Officer. Mr Ljunggren has more than 25 years of experience in the telecom industry mostly at mobile and fixed operator TeliaSonera, where he had his most recent assignment as Director of Network Architecture, including the task as alternate for the ordinary TeliaSonera board member in NGMN. In this role he also represented the company in the board of directors in the shared mobile network JVs in Sweden and Denmark. He also served as vice Chairman of the board at Wireless@KTH R&D Centre and director of the board at the Foundation for UNESCO World Heritage, Grimeton Radio Station, on behalf of the company. Apart from the previous role at TeliaSonera Mr Ljunggren was one of six founders and Senior manager of international strategy consulting firm, Northstream, with offices in Europe and Asia. The company also formed and spun off a product company and a venture capital firm in the mobile industry. Mr Ljunggren has been heavily involved in international activities in ETSI, 3GPP, GSMA and research programs funded by the European Commission, e.g. RACE1043 and RACE CODIT. Recently he was member of the High Level Group on the future use of the UHF band, initiated by EU Commissioner Neelie Kroes and chaired by Mr Pascal Lamy. Mr Ljunggren holds an Master of Science from the Royal Institute of Technology in Stockholm, Sweden. In 2015 he was elected member of the Swedish National Committee of Radio Science (URSI) at the Royal Academy of Science.

Emmanuel Lugagne-Delpon

Senior Vice President, Orange Labs Networks


Emmanuel Lugagne-Delpon joined France Telecom R&D (now Orange Labs) in 1993 as research engineer where he developed optical devices based on semi-conductors for fiber optic transmission and optical computing. In 1998 he joined France Telecom's international division to design and deploy international networks. In 2002 he joined the Orange Mobile division as VP for mobile value added services, where he actively participated in the launch of 3G services. Between 2008 and 2014 he was in charge of BSS IT systems within Orange France, before joining Orange Spain as CIO in 2014, were he drove deep transformation of IT architecture. Emmanuel Lugagne-Delpon graduated from Ecole Normale Superieure Ecole Nationale des Telcommunications Paris (France) and holds a Ph.D. in quantum physics.



Seong-Mok Oh

President and Head of Network Group, KT Corporation

Mr. Seong-Mok Oh is President and Head of Network Group at KT Corporation. He has over 25 years of seasoned experiences in the telecommunication field, covering practically all aspects of KT’s wireless network, with a specific focus on the network design. His major responsibilities include the provisioning of the company’s best-in-class broadband network, incorporating both wire-line and wireless infrastructure.

Under his leadership, KT was able to successfully commercialize the most innovative technologies such as LTE Advanced tri-band carrier aggregation for the first-time in the world.

Prior to his current position, as the Head of Mobile Network Business Unit, he played a crucial role in the world-first commercial deployment of centralized radio access network (C-RAN) architecture for 3G and LTE network. It was recognized as “The Most Significant Development for Commercial LTE Network by an Operator” in LTE Award 2012.

He serves as the board member in a number of domestic and international industry organizations. Since 2012, he is a member of the Steering Committee for Global TD-LTE Initiative. Also, in 2014, he was appointed as a Director on ‘5G Strategy Promotion Committee’ that supervises all relevant 5G-related activities led by Korean Government. He holds a Ph.D. degree in Electronics Engineering.

Seizo Onoe

Chief Technology Architect, NTT DOCOMO and President DOCOMO Technology


Seizo Onoe became Chief Technology Architect of NTT DOCOMO in June 2017 after his 5 years tenure as Chief Technology Officer, while retaining the position of President of DOCOMO Technology since June 2015.

Prior to his current position, he was Chief Technology Officer and Executive Vice President and a Member of the Board of Directors of NTT DOCOMO from June 2012.

Mr. Onoe became a Senior Vice President and Managing Director of the R&D Strategy Department in June 2008. He was a Vice President and took the position of Managing Director of departments in charge of Radio Access Network development from July 2002 to June 2008.

He has been responsible for leading initiatives in the research and development of the analog cellular system (1G), the digital cellular system (2G), W-CDMA/ HSPA (3G), LTE, LTE-Advanced (4G) and 5G. He has been working on the research and development of radio access networks, core networks, consumer devices and services.

He has worked for NTT and NTT DOCOMO since 1982, acquiring more than 30 years of experience. Mr. Onoe has a master’s degree in electronics from the Kyoto University Graduate School of Engineering.


Günther Ottendorfer

Chief Operating Officer, Technology, Sprint

Günther Ottendorfer was named Technical Chief Operating Officer at Sprint in August 2015. He is responsible for overseeing the company’s network, technology and IT organizations, including related strategy, network operations and performance, as well as partnerships with network, technology and IT vendors.

Günther started his international career in the telecommunication sector over 20 years ago. In 1996 he became a founding member of mobile operator, max.mobil, in Austria. He gained considerable management experience as Chief Operating Officer (COO) and Chief Technology Officer (CTO) for T-Mobile Austria, as CTO for T-Mobile Germany and as European Technology Director at Group level for T-Mobile International. In 2011 Günther became Managing Director -- Networks at Optus Singtel, Australia’s second largest telecommunications provider with over 11 million customers in cable, fixed, mobile and satellite Networks. In addition, he spearheaded the nationwide introduction of LTE and TD-LTE which Optus pioneered as one of the first providers globally. In 2013, he joined Telekom Austria Group as Group CTIO driving major wireless expansion, convergence and network function virtualization projects across the countries of the group.

Günther studied computer science at the Technical University of Vienna while working in parallel as a software developer for GSM.

Neville Ray

Executive Vice President and Chief Technology Officer, T-Mobile, US

Neville Ray has extensive experience in the telecommunications industry with over 25 years in the design, deployment and operational management of wireless networks in the USA and worldwide. His experience includes all aspects of wireless network design and deployment.

As Chief Technology Officer, Ray is responsible for the management and ongoing development of the T-Mobile US, Inc.’s national wireless network, as well as the company’s technology innovations, IT services and operations. Under Ray’s leadership, T-Mobile expanded to become America’s fastest nationwide 4G LTE network, reaching 265 million Americans.

Ray served as Chairperson of 4G Americas from 2008 through 2013 and again in 2015 – an organization with a mission to promote and facilitate the seamless deployment throughout the Americas of the 3GPP family of technologies, including HSPA, HSPA+ and LTE.

Prior to assuming his national role at T-Mobile, he held the position of Vice President Network Engineering & Operations for the Northeast region. Ray led the company through the 9/11 terrorist attacks, receiving significant recognition from the New York Police Department, NY state agencies and the FCC.

Ray’s US career commenced in 1995 when he held the position of Vice President of Network Operations at Pacific Bell Mobile Services. His prior experience included the design and deployment of cellular, microwave and broadcast telecommunications systems in Europe, the Middle East, Africa and the Far East.

Ray is an honors graduate of City University, London, UK and a member of the Institution of Electrical and Electronic Engineers (MIEEE) and the Institution of Civil Engineers (MICE).

Bruce Rodin

Vice President Wireless Networks, Bell Canada

Mr. Bruce Rodin is currently Vice President Wireless Technology at Bell Mobility, the wholly owned wireless division of Bell Canada. In this role, he is responsible for the development of all new wireless technologies at Bell including the establishment of strategic direction relating to spectrum acquisition, network planning and development towards LTE / SAE and beyond, services, terminal / product planning and development and the management of all Bell wireless laboratories. Mr. Rodin received a Bachelor of Science degree in Electrical Engineering from Queen's University at Kingston in 1980, is a member of the Professional Engineers of Ontario and IEEE. Mr. Rodin joined Bell Mobility in 1988 and has held numerous positions with-in the strategy, development and engineering teams.

Gediz Sezgin

Chief Network Technologies Officer, Turkcell

Gediz Sezgin was appointed Senior Vice President of Network Technologies as of September 1, 2015. Previously, he was Senior Vice President of ICT, Chief Information and Communication Technologies Officer, Director of Application Operations, Director of Service Network under the ICT Function and held various executive positions in the Technology Function. Gediz Sezgin joined Turkcell as Network Engineer in 1995. He started his professional life at Alcatel Teletaş in 1991. Mr. Sezgin was graduated from Istanbul Technical University in Electronics and Communication Engineering and received his Master’s degree from the same university.

Douglas Smith

President & CEO, Ligado Networks


As president and chief executive officer, Doug Smith manages and directs day-to-day operations across every aspect of Ligado Networks. He has overall responsibility for directing the vision of the company and will lead efforts to utilize its state-of-the-art communications assets in operating a network solutions firm designed to extend coverage, increase capacity and accelerate the delivery of next-generation technology for America’s wireless industry.

With more than 25 years of domestic and international telecom and wireless industry experience, Mr. Smith has engineered, built and launched nationwide networks for industry corporations including GTE, Nextel, Sprint Nextel and Clearwire.

From the outset of the commercial cellular industry, Mr. Smith has been involved with the development and technical support of several nationwide cellular networks spanning every generation of technology from the first analog networks through today’s state-of-the-art 4G systems. Joining Nextel when it was a start-up company, Mr. Smith was involved in building the business from the ground up. He was responsible for the design and operation of Nextel’s nationwide network which consisted of more than 20,000 cells and served more than 20 million subscribers. Following that network deployment, he served as Sprint’s senior vice president and chief technical operations officer and embarked on the deployment of the company’s 4G network.

Mr. Smith holds a Master’s of Science in Management of Technology from the Wharton School,       University of Pennsylvania; and a Bachelor of Science in Electrical Engineering from Merrimack College.


Howard Watson

CEO of Technology, Service and Operations and Group CIO, BT

Howard is CEO of Technology, Service and Operations. When Howard joined BT in October 2011 he brought 30 years of telecoms experience with him, including time spent at Virgin Media and Telewest. He possesses a broad knowledge of operational leadership, technology and IT, fortified by his expertise in strategic development, business transformation and post-merger integration. He also has strong experience in innovating and delivering transformational products in the UK cable industry. His areas of expertise include telephony, digital TV, video on demand, high definition TV and ‘ultra’ high speed broadband. Howard is passionate about technology and innovation, and bringing transformational products to market.

Peter Meissner

Chief Executive Officer, NGMN Ltd.

Dr. Meissner has over 30 years of experience in various telecommunication fields including more than 15 years of general management responsibilities with operators of mobile communication networks. In addition, he has extensive experience in research, technology strategy and management, emerging technology assessment, innovation transfer, and organization development. From 2000 until 2006, Dr. Meissner held positions as a senior executive in Orange. He started as Chief Technical Officer with Orange Communications SA, Switzerland, and finally was responsible for Quality and Performance as Corporate Vice President with Orange SA, Paris. Prior to joining Orange, he was more than 7 years with E-Plus Mobilfunk GmbH as General Manager, Systems Engineering. Since July 2006, Dr. Meissner has been running his own company as an independent business consultant, focusing on innovation, strategy, and organization development in key areas of the telecommunications industry. One of his appointments is supporting the world's leading operators and manufacturers as Chief Executive Officer of the Next Generation Mobile Network (NGMN) Alliance. Dr. Meissner holds degrees in Telecommunications from the Technical College of Lübeck and University of Hannover.