15th August - Voice telephony generates by far the greatest proportion of mobile operator revenue in Western Europe, so mobile voice telephony will strongly influence mobile operators’ revenue prospects for at least the next three years. Fixed–Mobile Substitution (FMS) encompasses traffic substitution, as voice calls migrate from fixed to mobile services, and line substitution, as households and businesses dispense with their fixed-line voice services.

The report examines the state of FMS in Western Europe, and considers the extent and effects of traffic and fixed-line substitution. It provides analysis of the latest data for Western Europe, as well as for individual countries and operators, to determine the overall extent of FMS and the degree to which operators can, and are, influencing the outcome. Case studies of leading mobile operators are presented to illustrate how they have managed to make the most of FMS, by driving usage growth without sacrificing pricing, to achieve the best outcome for mobile spend, despite strong competitive and regulatory pressures.

FMS continues to represent a critical threat to fixed operators. Fixed-line substitution is particularly damaging because it removes fixed operators' opportunity to generate revenue from either voice or broadband services. The report includes case studies of leading fixed network operators that are using effective tactics to maintain fixed voice spend and usage levels, and to resist fixed-line substitution.

The Acceleration of Fixed–Mobile Substitution in Western Europe: facts and figures answers your key questions:

- How is the proportion of voice traffic that originated on mobile phones changing? What are the differences between countries in the extent of, and speed of, traffic migration during 2006?

- How is the proportion of households that have a mobile phone, but no fixed-connection services, changing? What are the differences between countries in the extent of, and speed of, fixed-line substitution during 2006?

- What is happening to voice usage per capita, split between fixed and mobile? Are customers spending more on voice telephony services, or are they diverting their spend from fixed to mobile services?

- How much of customers’ spend on voice is accounted for by mobile services? Is this proportion still growing?

- What is happening to the average spend per minute of fixed and mobile services?

- Which operators are the most successful in maintaining or increasing voice usage and spend per subscriber? Which operators are the least successful?

- What are the leading mobile operators doing to maximise the opportunities from FMS? What tangible benefits is this providing?

- Which fixed operators are managing to sustain voice spend on fixed services? What are the leading fixed operators doing to achieve this?

- What actions should fixed and mobile operators take to address the opportunities and threats?

Who should read this report?

- Mobile network operators: senior executives and product managers, to understand the state of FMS in their particular markets, to learn from other markets, and to understand the actions they can take to seize opportunities from FMS.

- Fixed network operators: senior executives and product managers, to understand the state of FMS in their particular markets, to learn from other markets, and to understand the tactics that they can adopt to address the threats from FMS.

- Analysts and investors: to understand the impact of FMS, which will dictate the revenue outlook for fixed and mobile operators, and the industry as a whole.