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| | Mobile phone - Art History Online Reference and Guide |
 | | Most current mobile phones use a combination of radio wave transmission and conventional telephone circuit switching, though packet switching is already in use for some parts of the mobile phone network, especially for services such as internet access and WAP. |
 | | Mobile phone manufacturers include Alcatel, Audiovox, Kyocera (formerly the handset division of Qualcomm), LG, Motorola, Nokia, Panasonic (Matsushita Electric), Philips, Samsung, Sagem, Sanyo, Siemens, SK Teletech and Sony Ericsson. |
 | | Professional mobile radio systems are very similar to mobile phone systems and attempts have even been made to use TETRA, the international digital PMR standard, to implement public mobile networks, but normally PMR systems are sufficiently separate from the phone network to not really be considered phones but rather radios. |
| www.arthistoryclub.com /art_history/MIPC (2983 words) |
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