KR100374340B1 - Message standby phone for home use - Google Patents

Abstract

PURPOSE: A message standby phone for home use is provided to prevent a message standby phone from being hooked off even though the message standby phone is used as a general phone and prevent disconnection of a phone line even though a current consumption exceeds a defined amount. CONSTITUTION: A tone ringer(410) is connected to a central office or a PBX(Private Branch Exchange) through two telephone lines(Tip and Ring). A speech network(420) processes a voice received from a microphone(421), a transmitter of a message standby phone, and provides it to the telephone lines, and processes a voice received through the telephone lines and provides it to a speaker(422), a receiver of the message standby phone. A dialer(430) converts key information received from a key pad(431) into a DTMF(Dual Tone Multi Frequency). An indicator(440) is lighted when a ring is received through the telephone lines. A switch(450) is connected in series between the telephone lines and the indicator(440). The switch(450) is attached outside the message standby phone.

Description

Message Waiting Phone for Home Use

The present invention relates to a message standby telephone that can be used for home use not only connected to a private exchange or a keyphone system but also connected to a local exchange.

In general, as one general telephone is provided in each household, as shown in FIG. 1, subscribers of each household can talk to other subscribers using their own telephones. Referring to FIG. 1, general telephones ST10 and ST20 provided in each home are connected to a CO (Central Office) 100 through a trunk line (Tip, Ring), and the local exchange 100 When a subscriber connected to itself is called, the subscriber is notified of the call by providing a ring to the called subscriber's landline. In this case, the local exchange 100 consumes a current corresponding to a ring provided to the called general telephone side. The amount of current consumed in the local exchange 100 will naturally increase as the number of called subscribers increases. Since the amount of current that can be consumed in the local exchange 100 is not infinite and is constantly limited, the communication managers presently stipulate the amount of current that can be consumed in the general telephone of each home to be below a certain value. . The amount of current consumed as the ring rings in each home telephone is represented by a so-called "ring equivalence value" (REV), which is limited to a certain value or less as described above.

On the other hand, subscribers may illegally connect and use telephones as shown in FIGS. 2 and 3 without considering the above provisions. Referring to FIG. 2, two ordinary telephones ST11 and ST12 are connected and used in one home. In this case, if a ring occurs, the specified REV will be exceeded because the ringer of each telephone is driven and the ring rings at the same time. Referring to FIG. 3, a message waiting telephone ST10, which is not a regular telephone, is connected and used in a home. In this case, if a ring occurs, the prescribed REV will be exceeded because the ringer of the message standby telephone ST10 is driven to ring as well as the indicator lights.

As described above, when the REV of each phone exceeds the prescribed REV, a phenomenon occurs as if the phone is off-hook (Off Hook), so that the local exchange 100 no longer provides a ring. The subscriber is then in a serious situation in which the ringer is unable to speak with the calling party even if he tries to answer the call. In addition, the communication manager periodically checks whether a phone exceeding a prescribed REV, i.e., an illegally connected phone, is in use and blocks the line of the corresponding phone if found. Of course, in the case of using two common telephones connected to one home in common, the above result is a natural cost. However, it is too severe a punishment to pay such a charge to a well-intentioned subscriber who uses a message-waiting telephone instead of a regular telephone.

Accordingly, an object of the present invention is to implement a message standby telephone that can be used even for home use.

It is another object of the present invention to prevent inadvertent damage caused by a bona fide subscriber when using a message-waiting telephone for home instead of a regular telephone.

The present invention for achieving the above object is a ringer for generating a ring when the ring is retracted through a predetermined telephone line; An indicator that lights up when the ring is retracted through the telephone line; A serially connected between the telephone line and the indicator, and provides a message standby telephone comprising at least a switch for blocking a ring through the telephone line from entering the telephone line according to the user's request.

The switch is characterized in that the user is attached to the outside of the message standby phone to select the operation, such a switch may be used as a dip switch.

DETAILED DESCRIPTION A detailed description of preferred embodiments of the present invention will now be described with reference to the accompanying drawings.

In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. In addition, terms to be described below are defined in consideration of functions in the present invention, which may vary according to the intention or relationship of a user or a chip designer, and the definitions should be made based on the contents throughout the present specification.

Referring to FIG. 4, the message standby telephone according to the present invention includes a tone ringer 410, a speech network 420, a dialer 430, and an indicator 440. Included. These components are also found in typical message waiting phones. And the message standby telephone according to the present invention is added to the switch 450 for the operation of the present invention.

First, a general message standby telephone will be described.

In FIG. 3, the toneringer 410 may be connected to a local exchange or a private exchange through two telephone lines. The tone ringer 410 is activated when a ring is supplied through a telephone line (Tip & Ring) to generate a ring to inform the subscriber that the ring ringer 410 and the piezo (piezo) ringing the ring and An integrated circuit (IC) such as MC34017 for driving the piezo may be used. The voice network 420 processes the voice from the microphone 421, which is the talker of the message waiting telephone, and provides the voice to the telephone line. The voice network 420 processes the voice incoming through the telephone line. It provides to the speaker (Speaker) 422, which is the receiver of the message waiting phone. The dialer 430 is generated by converting key information from the keypad 431 into dual tone multi frequency (DTMF). The indicator 440 is turned on when the ring is retracted through the telephone line (Tip & Ring). As such an indicator, a neon lamp or a light emitting diode (LED) may be used.

Next, a message standby telephone that can be used for home use according to the present invention will be described. In this case, the term home can be used in the same way as a general telephone, i.e., even when a message-waiting telephone is connected to a local exchange, a phenomenon in which the telephone is off-hook does not occur, and current consumption does not exceed a prescribed REV. do.

In FIG. 4, the switch 450 is connected in series between the telephone line (Tip & Ring) and the indicator 440. The switch 450 is attached to the outside of the message standby telephone, a dip switch may be used. Now, if the subscriber connects to the local exchange through the telephone line (Tip & Ring) to operate the message waiting telephone for home use and operates the switch 450, the switch 450 indicates that the indicator 440 is connected to the telephone line (Tip & Ring). Block the connection to the ring. At this time, if the ring is retracted from the local exchange through the telephone line (Tip & Ring), the retracted ring is provided only to the tone ringer 410 and not to the indicator 440. In other words, when the ring is pulled from the national exchange, the tone ringer 410 generates a ring to inform the subscriber that it has been called. However, indicator 440 does not light up. At this time, the current consumed in the local exchange is the same as the case of providing a ring to a general telephone. Therefore, the same effect can be obtained when using a message standby phone for home use.

On the other hand, if you want to use such a message waiting phone in a private exchange (PBX) or a keyphone system (Keyphone System) by operating the switch 450 to connect the telephone line (Tip & Ring) and the indicator 440, message waiting The original function of the phone can be obtained.

As described above, the present invention makes it possible to use a message-waiting telephone in place of a general telephone for home use. As a result, it is possible to prevent a phenomenon such as a telephone off-hook when a message standby telephone is used for home use, and to solve a problem that a telephone line is blocked when current consumption exceeds a prescribed REV. There is an advantage.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the scope of the following claims, but also by the equivalents of the claims.

1 is a view showing that a general telephone provided in each home is connected to a local exchange.

2 is a view showing that a general telephone having two at one home and one at another is connected to a local exchange.

3 is a diagram showing that a message waiting telephone is connected to a local exchange.

4 is a view showing the configuration of a message standby telephone according to the present invention.

Explanation of symbols for main parts of the drawings

410: toneringer 420: voice network

421: microphone 422: speaker

430: dialer 431: keypad

440: indicator 450: switch

Claims (6)

In message waiting phone, A ringer which generates a ring when the ring is drawn through a predetermined telephone line, An indicator that lights up when the ring is retracted through the telephone line, And a switch connected in series between the telephone line and the indicator and configured to block a ring through the telephone line from entering the telephone line according to a user's request. The message standby telephone of claim 1, wherein the switch is attached to an outside of the message standby telephone. 3. The message standby telephone of claim 1 or 2, wherein the switch is a dip switch. In message waiting phone, A ringer which generates a ring when the ring is drawn through a predetermined telephone line, An indicator that lights up when the ring is retracted through the telephone line, And a switch connected in series between the telephone line and the indicator, the switch disconnecting the connection between the telephone line and the indicator when the telephone line is connected to a local exchange. 5. The message standby telephone of claim 4, wherein the switch is attached to an outside of the message standby telephone. 6. The message standby telephone of claim 4 or 5, wherein the switch is a dip switch.