JPH048683Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a telephone outlet for connecting a telephone used in hospitals, offices, etc. to a telephone line.

[Prior Art] Conventionally, a telephone outlet has a modular jack 2 attached to an outlet plate 1'' as shown in FIG. 3 in order to connect the telephone to a line.
The telephone 3 is provided with a modular plug 4 that can be inserted into and removed from the modular jack 2 via a machine string 5. By inserting and removing the modular plug 4 into the modular jack 2, the telephone 3 can be easily connected. It can be removed or attached.

Then, when the telephone 3 connected to the line through this telephone outlet is used to make a call, by picking up the handset 6 of the telephone, a DC loop is formed in the telephone line and the telephone becomes ready to make a call.

Further, when a call is received, a ringing signal is sent to the telephone 3 from the telephone line, a ringing tone is sounded, and the handset 6 of the telephone 3 is picked up, thereby forming a closed loop on the telephone line and entering a talking state.

[Problems to be solved by the invention] By the way, the conventional telephone outlet configured as described above does not require a telephone outlet and a telephone to be installed for each patient in a hospital room, for example, and a fee is charged for each telephone. In the case of a system that allows this, it is not possible to limit the number of operators of each telephone set, which has the disadvantage of causing troubles regarding billing.

In order to prevent such troubles, the present applicant has proposed a telephone outlet 1' equipped with a call restriction switch as shown in FIG. This telephone outlet 1' has a switch 10 that opens and closes the telephone line.
and a locking means 11 for controlling the switch 10,
The lock 11 is locked by a key 11a owned only by a specific person.
By operating the button b and operating the locking means 11, the switch 10 is brought into a closed state and a call can be made.

However, in such a telephone outlet 1', when the locking means 11 is locked, that is, when the switch 10 is open, the ring signal is cut off not only for outgoing calls but also for incoming calls, and the ring tone is emitted. Since both incoming and outgoing calls are regulated without being charged, it is not suitable for systems that only want to regulate outgoing calls that are subject to billing.

This invention was made in order to eliminate the above-mentioned drawbacks of the conventional methods.It is possible to maintain the outgoing restriction state without blocking the ringing signal when an incoming call is received. The purpose of the present invention is to provide a telephone outlet that can only be answered by a specific person, since it is not possible to make a call unless the telephone is in this state.

[Means for Solving the Problems] The telephone outlet of the present invention that achieves the above purpose includes a modular plug connected to a telephone, and a modular plug connected to a telephone line that is detachable from the modular plug and is attached to an outlet plate. The outlet plate is equipped with a locking means for controlling a switch that opens and closes the telephone line connected to the modular jack, and an AC signal passing capacitor is installed in parallel with the switch. be.

[Example] Hereinafter, an example of the present invention will be described based on the drawings.

As shown in FIG. 1, it includes a modular plug 4 connected to a telephone 3, and a modular jack 2 connected to a telephone line, detachable from the modular plug 4, and attached to an outlet plate 1.

The telephone outlet includes a switch 10 for opening and closing a telephone line, a locking means 11 for controlling the switch 10, and a capacitor 12 for passing an AC signal, which is provided in parallel with the switch 10. The switch 10 may be one that opens and closes mechanically in conjunction with the locking means 11, or may be one that operates electrically. Locking means 11
In this embodiment, the key 11a and the lock 11b are composed of a specific key 11a and a lock 11b, respectively.
By operating the locking means 11, the switch 10 can be mechanically or electrically controlled to open and close.

The operation in the above configuration will be explained.

First, when the locking means 11 is locked, the switch 10 is open, and even if the handset 6 of the telephone 3 connected to the telephone outlet is picked up in this state, a DC loop will not be formed in the telephone line. I can't make a call. However, when a call is received, the ringing signal sent from the telephone line is an alternating current signal, so it reaches the telephone set 3 through the alternating current signal passing capacitor 12, and the telephone set 3 emits a ringing tone. Therefore, the operator operates the lock 11b with the specific key 11a to close the switch 10, and then
When we take up Figure 2, a closed loop is formed on the telephone line and a conversation is established. That is, when the locking means 11 is locked and the switch 10 is in the open state, only outgoing calls are restricted, and in the case of incoming calls, a calling signal is received, but calls cannot be made without the key 11a.

Next, when the lock 11b is operated with a specific key 11a, the switch 10 is brought into a closed state in conjunction with the mechanical operation, for example. When in the closed state, it is similar to a normal telephone outlet, and the telephone 3 can make and receive calls.

In the above embodiment, a combination of a key 11a and a lock 11b is shown as the locking means 11 for controlling the switch 10, but the locking means can also be a combination of a card with a card reader, a numeric keypad, or the like. When using a card, by inserting the card into a card reader installed in a telephone outlet, the card reader reads the identification symbol of the card holder, etc. stored on the card, and sends a signal to the switch to open/close the card. The device can be electrically opened and closed.

In the case of a numeric keypad, by operating the numeric keypad and inputting a specific number, a reading device connected to the numeric keypad compares the preset number with the entered number, and outputs a signal when they match. The switch is then controlled by this signal.

[Effects of the invention] As is clear from the above embodiments, the telephone outlet of the present invention has a modular plug connected to the telephone, and a module attached to the outlet plate that is connected to the telephone line and can be inserted into and removed from the modular plug. The outlet plate is equipped with a locking means for controlling a switch that opens and closes the telephone line connected to the modular jack, and an AC signal passing capacitor is provided in parallel with the switch. Prevent unauthorized use by anyone other than a specific operator by restricting only outgoing calls,
Problems regarding billing can be eliminated, and when a call arrives, a calling signal can be received, but the call cannot be made unless the lock is opened, so only a specific person can answer.

The telephone outlet of the present invention is effective not only in systems for mere billing purposes, but also in all systems that require restrictions on users.

[Brief explanation of the drawing]

1 and 2 are a circuit configuration diagram and a perspective view, respectively, showing an embodiment of the telephone outlet of the present invention, and FIGS. 3 and 4 are a perspective view and a circuit configuration diagram, respectively, showing a conventional telephone outlet. It is. DESCRIPTION OF SYMBOLS 1... Outlet plate, 2... Modular jack, 3... Telephone, 4... Modular plug, 5... Machine string, 6... Transmitter/receiver, 10... Switch, 11... Locking means, 12... ...A capacitor for passing AC signals.

Claims (1)

[Scope of utility model registration request] A switch for opening and closing the telephone line connected to the modular jack, comprising a modular plug connected to a telephone, and a modular jack connected to a telephone line, removable from the modular plug, and attached to an outlet plate. A telephone outlet, characterized in that the outlet plate is provided with a locking means for control, and an AC signal passing capacitor is provided in parallel with the switch.