JPH0436387U - - Google Patents

Description

[Brief explanation of drawings]

Figure 1 is a circuit diagram of a telephone outlet according to an embodiment of the present invention, Figure 2 is an exploded perspective view of the same, Figure 3 is a configuration diagram of a telephone exchange equipped with the same, and Figure 4 is a diagram of the telephone exchange equipped with the same. The circuit diagram shown in FIG. 5 is a configuration diagram of a conventional telephone exchange device. A is a telephone exchange, B is a telephone outlet, C is a telephone, _l1 is an outside line, _l2 is an extension line, _l3 is a control line,
31 is a call processing signal sending circuit.

Claims (1)

[Scope of utility model registration request] A telephone exchange connected to an outside line which is a public telephone line, a plurality of telephone outlets buried in a wall etc. connected to this telephone exchange through an extension line as a call line and a control line as a signal transmission line, respectively, and the above-mentioned telephone In a telephone exchange device that enables external and internal calls using a commercially available telephone that is removably connected to the above-mentioned telephone outlet by switching connection to an external line or other extension line through an exchange, the telephone exchanger is capable of making external and internal calls by dialing the telephone. 1. A telephone exchange apparatus, characterized in that said telephone outlet is provided with a call processing signal sending means for sending a pseudo call processing signal identical to the call processing signal received by the operator to the telephone exchange by operating a switch.