Projects (selected)

Bottom-up cost modelling for the ULL

  • Local loop cost studies for the regulatory rate case decision of BNetzA, Germany (1999, 2001-2005, 2008, 2009, 2011, 2013, 2016, 2018)
  • Modelling of the costs of a full country covering high broadband network for Switzerland for BAKOM (2017)
  • Bottom-up LRIC cost model and cost study for the cost of unbundled components in a combined copper and fibre access network in Spain for CMT (2011-2012)
  • ULL cost study, Italy for Fastweg S.p.A. (2010)
  • Access to ducts and dark fibre, cost study for BNetzA, Germany, (2009, 2011, 2013, 2016)
  • Costs of the ULL, development of a bottom-up model and cost study for BAKOM, Switzerland (2005)
  • FL-LRIC cost determination for selected Access Areas (ULL) for Ofcom, UK (2004)
  • ULL bottom-up model for EETT (2004)

Bottom-up cost modelling for Interconnection services (fixed network)

  • Bottom-up cost modelling (LRIC) and cost studies for Voice IC in fixed networks BNetzA's regulaotry rate case decisions, Germany (2001, 2003, 2006, 2008, 2012, 2014, 2016, 2018)

  • Cost model for the calculation of termination rates in FTTB-networks (NGN/NGA) for two German city carriers (2008)

  • Bottom-up model for Voice IC, transit, leased lines, FRIACO for EETT, Greece (2003)
  • Bottom-up model for Voice IC, transit, leased lines for ANRT, Morocco (2003)

Bottom-up cost modelling for Broadband Services

  • Developing of a Cost Study for Layer2 Bitstream Access for BNetzA (2017)
  • Preparation of a cost study for VULA for BNetzA (2017)
  • Study into the current and future technological access options to all fixed telecommunication infrastructures in the Netherlands for ACM, The Netherlands (2017)
  • LRIC cost modelling for Leased Lines NGN model Extension, consultation, Training and cost study for BNetzA's regulaotry rate case decision, Germany (2013-2015, 2016)
  • LRIC cost modelling for IP Bitstream Access NGN Model Extension and cost study for BNetzA's regulaotry rate case decision, Germany (2014, 2016)
  • Extension of the bottom-up broadband cost model by determining cost of fixed Networks based on LRIC for Leased Lines for BNetzA, Germany (2013-2015), cost study (2015)
  • Bottom-up cost modell for a NGN concentration and core network for the determination of voice interconnection charges in Austria for RTR GmbH (2011), Reference document (2011)l 
  • Voice IC cost study for BNetzA's regulatory rate case decisions, Germany (2011, 2012, 2014)
  • Price Margin Squeeze and consistency for DSL, IP-Bitstream and LLU pro ducts for a group of German operators (2008)
  • Bottom-up cost model for Bitstream Access (ATM) (2007); Ethernet (2009) for the Regulatory Authority of Greece (EETT)
  • Model development of an analytical cost model for BNetzA (2004)

Bottom-up cost models for mobile network Services and interconnection

  • Update and Extension of the analytical Bottom-up cost model for mobile Networks for BNetzA, Germany (2015-2016)
  • Update and extension of the mobile network cost model – inclusion of 4G technology and update of the model’s data basis for ILR, Luxembourg (2016)
  • Extension of the BU-LRIC mobile model to include LTE-Technology for RTR, Austria (2013)
  • Mobile 2G/3G network cost model for Switzerland for BAKOM (2010)
  • Mobile network cost model for Australia for the Australian Competition and Consumer Commission (ACCC) (2006)

NGN/NGA development - policy issues

  • Copper ULL pricing in front of decreasing demand and migration to NGA for Iliad, Boygues France (2016)


  • In-house infrastructure – access and pricing for BNetzA (2018)
  • Study on Implementation and monitoring of measures under Directive 61/2014 Cost reduction Directive (SMART 2015/0066) for European Commission DG CNECT (2016 -2018)
  • Assessing proposals for a superfast data network in Flanders for Government of Flanders Belgium (2017)
  • Benefits of ultrafast network deployment for OFCOM, UK (2017)
  • FTTP benchmark research for 2017, Openreach, UK (2017)
  • Study into the current and future technological access options to all fixed telecommunication infrastructures in the Netherlands for ACM, The Netherlands (2017)
  • Evaluation of the Broadband-Initiative of the BMVIT for 2015/2016 for BMVIT, Austria (2017)
  • Technicalities of VULA products in the context of a state aid investigation for European Commission, DG Competition (2016 - 2017)
  • Duct and pole access and non-discrimination – Best Practice in Europe for an european Network Operator (2016)
  • Strategy for the future strategic position of a regional telecommunications operator, incl. Workshops, for Thueringer Netkom, Germany (2016)
  • Training on Current and forthcoming trends in fixed network technologies and operations for European Commission, DG CONNECT (2016)
  • Vectoring and FTTH in Greece – Regulatory and strategic analysis for Forthnet, Greece (2016)
  • Network Sharing for mobile and fixed networks / Mobile network convergence for BAKOM, Switzerland, (2016)
  • Costing / Pricing principles and Methodologies for ComReg, Irland (2016)
  • GPON and TWDM GPON in the context of the wholesale local access market for ComReg, Ireland, (2016)
  • Study on access prices for state aid-funded broadband infrastructure for BNetzA, Germany (2016)
  • Fixed and mobile cost models for Mexico - Analysis for Axtel, Mexico (2015)
  • Analysing the Commerce Commission’s bottom-up cost models for UCLL and UBA and accompanying the FPP process for Spark and Vodafone, New Zealand (2014/15)
  • Technical feasibility analysis of providing wholesale broadband access inputs over a cable TV infrastructure for ComReg, Ireland (2015)
  • Equivalent subsidization of Mobile and Fixed networks in the Austrian broadband roll out for T-Mobile, Austria (2015)
  • Ethernet Leased Lines: International Benchmark for BT Global Services, USA (2015)
  • Options of wholesale access to Cable-TV networks with focus on VULA for ACM, The Netherlands (2015)
  • Ethernet provision: Options for Openreach SLA/G regime for BT Openreach, United Kingdom (2015)
  • Investigation into interoperability standards for the promotion of the internal market for electronic communications for the European Commission (2015)
  • Study on price setting for the access to infrastructure – Implementation of the directive on broadband cost reduction - for the German Federal Ministry of Transport and Digital Infrastructure (2015)
  • Bitstream cost model analysis and support in the regulatory process for Bezeq, Israel (2014)
  • An investment friendly regulatory scenario for for A1 Telekom Austria, (2014)
  • VDSL Vectoring: implications for competition and regulation for BNetzA, Germany (2013)
  • Benchmarking of different National Broadband Access Network approaches for Vodafone Group (2013)
  • Cost reduction through common deployment of electrical power and telecommunication access lines for BNetzA, Germany (2013)
  • Impact of the application of the EC Recommendation on costing methodology on SLU/LLU cost in Italy for Fastweb S.p.A. (2013)
  • Benchmark study about services and charges for unbundled ducts in Europe for a German network operator (2011)
  • Expertise comparing the cost of Fibre-to-the-office (FTTO) building infrastructure with traditional copper cabling for broadband inhouse networks for Microsens (2012)
  • Analysis and consultancy on NGA Unbundling for an European Regulaory Authority (2010)
  • Analysis and consultancy for a Price Margin Squeeze of bitstream access in Italy for Fastweb S.p.a. (2010)
  • Market analysis and selection of a White Label source supplier for a German regional FTTB/H operator (2010) 
  • Business case review for a regional FTTH roll-out for two local power utilities (2009 and 2010) 

  • Evolution of FTTB/H networks for major German banks (2009 and 2010) 
  • Business case review of the FTTH strategy for a regional carrier (2008) 

  • Analysis and improvement of the AGCOM (Italian regulatory authority) cost model for termination rates in NGN in Italy for Fastweb (2008) 

Additionally we refer to the WIK Discussion Papers, where we publish many results from our research projects. 

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Dr. Thomas Plückebaum
Head of Department
Networks and Costs

Phone: +49 2224 9225-20
Fax:     +49 2224 9225-63