JPS61119458U

JPS61119458U -

Info

Publication number: JPS61119458U
Application number: JP205285U
Authority: JP
Priority date: 1985-01-11
Filing date: 1985-01-11
Publication date: 1986-07-28

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例を示す構成図、第
２図はこの考案の制御回路の保留動作部分のプロ
グラムフローチヤート、第３図は従来の拡声電話
機を示す構成図である。１……ハンドセツト、２……ハンドセツト通話
回路、３……通話回路切替手段、４……局線、１
１……拡声通話回路、１３……マイクロホン、１
４……スピーカ、１５……保留音発生手段、１６
……保留操作部材、１７ａ……保留設定手段、１
７ｂ……保留解除手段。なお、図中同一又は相当
部分には同一符号を用いている。 FIG. 1 is a block diagram showing an embodiment of this invention, FIG. 2 is a program flowchart of the holding operation portion of the control circuit of this invention, and FIG. 3 is a block diagram showing a conventional loudspeaker telephone. DESCRIPTION OF SYMBOLS 1... Handset, 2... Handset call circuit, 3... Call circuit switching means, 4... Office line, 1
1... Public address call circuit, 13... Microphone, 1
4...Speaker, 15...Hold tone generating means, 16
...Holding operation member, 17a...Holding setting means, 1
7b... Hold release means. Note that the same reference numerals are used for the same or corresponding parts in the figures.

Claims

[Scope of utility model registration request]

A loudspeaker system comprising a handset for transmitting and receiving calls via a handset call circuit, a microphone and a speaker for transmitting and receiving calls via a public address call circuit, and a call circuit switching means for switching central office lines from an exchange to each of the above-mentioned call circuits. The telephone includes a hold tone generation means, a hold operation member, and based on a hold setting operation of the hold operation member, switches the call circuit switching means to the loudspeaker circuit side, and operates the hold tone generation means to output the hold tone. a hold setting means for transmitting the sound to the telephone line and a speaker; and a hold release means for stopping the operation of the hold tone generating means based on the hold release operation of the hold operation member and switching the call circuit switching means to the handset call circuit side when the handset is picked up. A public address telephone characterized by being equipped with.