JPH0370482U

JPH0370482U -

Info

Publication number: JPH0370482U
Application number: JP13166089U
Authority: JP
Priority date: 1989-11-14
Filing date: 1989-11-14
Publication date: 1991-07-15

Description

[Brief explanation of the drawing]

第１図は本考案に係る簡易電話交換装置の一実
施例を示すブロツク図、第２図はこの実施例の動
作説明に供するフローチヤートである。１……主装置、２_１〜２ｎ……外線、３_１〜３
ｍ……線路、４_１……４Ｗ電話機、４ｍ……２Ｗ
電話機、１１_１〜２２ｎ……外線インターフエー
ス、１２……通話路スイツチ、１３_１……４Ｗ電
話機インターフエース、１３ｍ……２Ｗ電話機イ
ンターフエース、１４……ＣＰＵ。 FIG. 1 is a block diagram showing an embodiment of a simple telephone switching device according to the present invention, and FIG. 2 is a flowchart for explaining the operation of this embodiment. 1... Main device, 2 ₁ to 2n... External line, 3 ₁ to 3
m...Railway, 4 ₁ ...4W telephone, 4m...2W
Telephone, 11 ₁ to 22n...External line interface, 12...Call path switch, 13 ₁ ...4W telephone interface, 13m...2W telephone interface, 14...CPU.

Claims

[Scope of Utility Model Registration Claim] A simple telephone that accommodates multiple outside lines, multiple 4-wire telephones, and 2-wire standard telephones, and that puts the outside line on hold by performing a hold operation during an outside line call on the housed standard telephone. A simple telephone switching device, characterized in that the switching device comprises means for immediately transmitting a hold alarm sound and transitioning to a hold alarm state when the standard telephone that has put the outside line on hold goes on-hook.