Telephone device and user exchanger
A technology of telephone devices and telephone extensions, which is applied in the field of PBX, and can solve the problems such as the impossibility of receiving personal IDs
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[0013] Fig. 1 is a block diagram of a PBX in Embodiment 1 according to the present invention. figure 2 The redial table of the PBX according to Embodiment 1 of the present invention is shown.
[0014] In FIG. 1, numeral 1 denotes a PBX, and 2, 2a, . . . , 2n denote an extension telephone. The extension telephone 2 is a collective name of the extension telephones 2a, . . . , 2n. The entire configuration including the PBX 1 and the extension telephone 2 is generally used to refer to the telephone device according to the invention. The internal structure of the PBX will be described in detail below.
[0015] Numeral 11 represents the analog outside line interface that is connected and communicated with the analog telephone line (the analog communication line in the embodiment of the present invention 1), and 12 represents and comprises the digital telephone line (the digital among the embodiment 1 of the present invention line) of the control channel and the voice channel. Com...
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