| 摘要 |
PURPOSE:To enable secret talk service without the use of adaptor, etc., and facilitate additive installation of telephone sets by providing a telephone plug socket with a secret talk function, forming the housing of socket so as to have module size of wiring apparatus, and providing a mounting frame with fixing means. CONSTITUTION:A secret talk circuit 2 is arranged in a telephone plug socket A to enable secret talk service without requiring adaptor, etc. A housing 3 for the plug socket A is constructed from a body 4 and a cover 5, and receives the secret talk circuit 2 and a modular jack 1 therewithin. This housing 3 is formed to have module size of one standardized wall-embedded-type wiring apparatus, and embedded by using a ready made synthetic resin mounting frame 6 in a embedded box buried in the wall. A connecting terminal for connecting a telephone circuit 1 and a terminal for a feeding wiring are connected to the back surface of the embedded box in the wall, and an opening 7 for exposing an inserting aperture for the modular jack 1 is formed in the front surface of the cover 5.
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