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WIRELESS TERMINAL HAVING WIRELESS TELEPHONE FUNCTION AND IP TELEPHONE FUNCTION, AND ROAMING METHOD BETWEEN PUBLIC WIRELESS LINE AND WIRELESS LOCAL AREA NETWORK
WIRELESS TERMINAL HAVING WIRELESS TELEPHONE FUNCTION AND IP TELEPHONE FUNCTION, AND ROAMING METHOD BETWEEN PUBLIC WIRELESS LINE AND WIRELESS LOCAL AREA NETWORK
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机译：具有无线电话功能和IP电话功能的无线终端，以及公共无线线路和无线局域网之间的漫游方法
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摘要
PROBLEM TO BE SOLVED: To provide a wireless terminal which determines whether to switch to connection with a public wireless line when received power of wireless LAN radio becomes small during communication through the wireless local area network.;SOLUTION: A roaming method for the wireless terminal having both of a communication function through the public wireless line and a communication function through the wireless LAN compares (S44 and S51) the received power of wireless LAN radio with previously fixed thresholds TH1 and TH2. When judging (S45 and S51) that it is required to shift from a communication function of presently speaking to another communication function, the method asks (S46 and S52) switching between communication through a public line and that through the radio LAN. Then, when a user authenticates switching, the method switches (S48 and S54) from the communication function of the presently speaking to another communication function.;COPYRIGHT: (C)2007,JPO&INPIT
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