| 摘要 |
Speech over an analog telephone set or an internet phone device in a LAN telephone networ k is actualized by connecting internet phone devices or analog telephone sets to a LAN telephone switching apparatus. Herein, it is permitted to form a system of telephone numbers which differ from LAN addresses being unique in the LAN telephone network, so that the network telephone set can be used with the same feel as that of a conventional extension telephone. Besides, address setting for the individual analog telephone sets or internet phone devices is automatically performed. Moreover, local IP addresses being unique in the LAN telephone switching apparatus are used as IP addresses which are set for the individual sets or devices, so that the problem of the exhaustion of the number of IP addresses can be solved.
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