| 1. | Exetel does not deploy its own infrastructure outside of its own switching centres.
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| 2. | The network consisted of switching centres, transmission facilities and subscriber terminals.
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| 3. | A Remote Switching Centre ( RSC ) has limited capability.
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| 4. | The site operates as a switching centre, underpinning the company's network between Leeds and Edinburgh.
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| 5. | The base station is controlled through the Base Station Controller via the Mobile Switching Centre.
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| 6. | In a message-switching centre an incoming message is not lost when the required outgoing route is busy.
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| 7. | GEC provided Sector Switching Centres in the London director area at Ilford, Wood Green, Colindale, Ealing, Kingston, Croydon and Eltham.
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| 8. | The " 2 out of 6 " frequency code was used to pass digits forward between Registers in traditional International Switching Centres.
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| 9. | The protocol will be used for the transmission between the radio base stations and the mobile switching centre via the base station controllers.
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| 10. | TRI has set up one mobile switching centre, one base station controller and 20 Radio Base Stations with a capacity of 20, 000 which is expandable.
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