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Voice remains the most important element within the broader mobile telecoms market; however several threats exist to this mainstay of operator revenues. Indeed, the role that voice plays in the telecommunications ecosystem of the future will be very different from today owing to unprecedented structural, competitive and technology drivers. On one hand, mobile operators’ penetration rates have reached saturation in developed markets, bringing about unprecedented competition. On the other hand, Voice over IP is becoming an increasingly important driver for change in the mobile operator community, as handsets become more and capable of efficient data carriage and faster data speeds enable efficient voice over IP on the mobile networks. In addition, WiFi will become more capable of voice carriage. This may relieve pressure on operators’ networks, but it will also allow third parties the opportunity to start offering voice services. Meanwhile, regulatory pressure will only increase on operators to accept VoIP on their networks in the interest of “net neutrality”- the concept whereby services such as voice should be allowed on operators’ networks, irrespective of the technology used.