| 11. | BB provides Internet Protocol telephony, cable television and other services.
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| 12. | Private sector companies operate in mobile telephony, and Internet access.
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| 13. | Mobile telephony had an 108 % penetration rate in March 2008.
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| 14. | Another social theory supported through telephony is the Media Dependency Theory.
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| 15. | HOT uses its cable infrastructure in order to provide telephony services.
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| 16. | These softswitches are both for local and long distance telephony services.
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| 17. | Preece also developed a wireless telegraphy and telephony system in 1892.
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| 18. | The Second World War made military use of radio telephony links.
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| 19. | These were used until the end of the analogue telephony era.
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| 20. | Watson and other Bell engineers invented numerous other improvements to telephony.
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