| http://www.w3.org/ns/prov#value | - These devices are connected to a sub-network such as a telephone line, a wireless LAN, a blue tooth network, USB network, an IEEE1394 network, and a power line. [0005]FIG. 1 is a drawing showing a general home-network structure. [0006] Referring to FIG. 1, a telephone 120A, a notebook computer 120B, a fax machine 120C and a computer 120D are connected to a telephone line 120 and these devices form
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