JPH0316457A - Extension telephone system with independent built-in interphone circuit - Google Patents

Abstract

PURPOSE:To attain ease of design, assembly and installation and to improve the practicality and general-purpose performance by constituting a telephone circuit and an interphone circuit into a telephone set independently, adopting a battery or an AC power supply for a power supply of the interphone circuit and interconnecting telephone sets with one cord integrating the telephone line and the interphone line. CONSTITUTION:The communication between the telephone sets is implemented by using a built-in interphone circuit and an interphone line. The communication to an external device and the line switching are implemented by using the telephone circuit and the telephone line. Other functions are attained by using the additional functions of the telephone circuit and the interphone circuit.

Description

[Detailed Description of the Invention] (Industrial Application Field) Since there is no contact between the TG circuit and the intercom circuit, the configuration inside the telephone is easy, and it can be used in any 4-way telephone, from single-function telephones to multi-function telephones. ! It can also be incorporated into seeds. There is no need for a switch or main device, and the telephones are connected to each other using a single +1 &? Since it is connected only with a cord, the overall equipment and installation work can be simplified. (Prior art) Conventional home telephones or telephones with an extension function have a telephone circuit and an extension circuit on the same circuit, and require a switch or main device. (Problem to be solved by the invention!!!l!) Development of an extension device that has a simple structure, can be incorporated into single-function telephones, allows easy connection of telephones, and does not require a switchboard or main equipment. (Means to solve the problem) ii! The FFI talking circuit and the intercom circuit were installed independently in the handset, the power source for the interphone circuit was either a battery or an AC power source, and the telephones were connected to each other using a single cord containing four telephone lines and four interphone lines. (Function) Communication between telephones is performed using the built-in interphone circuit and interphone line. Communication with the outside world and line switching are performed using telephone circuits and telephone lines. Other functions depend on the additional functions of the telephone circuit and intercom circuit.

(Example) Implementation of configuration based on Attachment Figure I.

(Effects of the invention) Since the entire system is simple, assembly and installation are easy, and practicality and versatility are improved.

[Brief explanation of drawings]

The telephone circuit, intercom circuit, power supply unit, and telephone body shall be designed and designed based on attached Figure 1. (l) and (2). (3) and (4) each connect the telephones together within one cord. Masato Okada, Representative Director of Medix Unison Co., Ltd.

Claims (1)

[Scope of Claims] 1) This telephone device is a telephone device that has an extension function by having a telephone circuit and an intercom circuit function independently within the same telephone without having any circuit contact with each other. 2) This telephone device is a telephone device in which a telephone with a built-in interphone main circuit and a telephone with a built-in interphone slave circuit are connected with only one connection cord having a built-in telephone line and an interphone line. 3) Since the built-in intercom circuit of this telephone device is independent, the telephone circuit and telephone functions can be set without being influenced by the built-in interphone circuit. 4) This telephone device is powered by batteries or AC for internal calls.
This is a telephone device that does not require a switchboard or main device because it uses only a built-in interphone as a power source.