| Absolute price caps
| imposing the same wholesale cost for a call from any network in the EU to any other network within the EU
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| Average price caps | charges calculated by dividing wholesale roaming revenues received (from providing wholesale roaming to other mobile operators) by the number of wholesale minutes sold
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| Consumer Protection Tariff | an absolute price capped tariff which would be available to all customers
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| Data services | Services for data, rather than voice, transfer; short message services (SMS) and multimedia message services (MMS) are examples
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| GSM Association | the representative body of mobile operators
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| Impact Assessment | a study carried out by the Commission before drafting legislation to assess the impact that legislation will have
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| Mobile Termination Rate | fee that mobile network operators charge to connect calls that are made from another fixed or mobile network
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| Mobile Virtual Network Operators |
a company that does not own a licenced frequency spectrum, but resells mobile telephony services under their own brand name, using the network of another mobile phone operator
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| Ofcom | UK regulator
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| Rapporteur | the person in the European Parliament for the drafting on a report on a Commission proposal for legislation
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| Retail | the fee charged to the consumer
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| Roaming | the fee a mobile phone user is charged when using their phone abroad
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| RPI-X | a standard price cap methodology widely applied in telecommunications markets whereby prices are linked to the inflation rate (the retail price index or RPI) minus an X factor
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| Sunrise | an initial period after the application of the legislation where no retail regulations will apply
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| Sunset | an expiration date for the Regulation
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| Wholesale | the fee one operator charges another
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