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Other technologies

Other technological innovations that can be used to improve access to communication networks in developing regions include:

Digital Compression 
Compression algorithms can be used to "compress" digital voice signals, so that eight or more conversations can be carried on a single 64 kbps voice channel, thus reducing transmission costs. Compressed digital video can be used to transmit motion video over as few as 2 telephone lines (128 kbps), offering the possibility of low cost videoconferencing for distance education and training.

Internet Telephony (Voice over IP)
Packetised voice communication can be transmitted very inexpensively over the Internet. Some carriers are now offering dial-up access to Internet telephony. The advantage of using Internet protocols for voice as well as data is much lower transmission cost than over circuit-switched telephony networks.

Community Radio 
Small FM community radio stations can be important news sources for the community and can be used to broadcast educational radio programmes for listening both in school and at home or community centres. Some telecentre projects are combining computer facilities with community radio stations. Portable wind-up radio receivers are practical for school and community use.

Case studies
Radio Education for Afghan Children (REACH)
To reach children in Afghanistan who have been deprived of normal schooling by almost 20 years of warfare and Taliban restrictions, the BBC World service launched this radio series in July, 2001. The radio programmes are not a replacement for school, as they do not teach, but rather get children to learn by themselves, by awakening their curiosity and helping them question the world.