KR900006396B1 - Substraiton extention arrantement - Google Patents

Abstract

The system using one telephone line with a number of subsidiary phones is divided to a main telephone connected to the line and sub- telephones connected to the main telephone. Both telephone sets equip privacy function switches (11b,12b) switching on and off the counterpart ringing circuit (11a,11b) and line when the person does not pick-up the handset for certain time after rining in the main telephone, an automatic ring changer (11c) switches the call to the sub-telephone.

Description

Extension Telephone System

1 is a reference diagram of a conventional method for expanding a telephone.

2 is a block diagram of a telephone expansion system according to the present invention.

3 is a more detailed embodiment of FIG.

4 is a block diagram of yet another second embodiment of the present invention;

5 is a reference diagram of a third embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

1: extension telephone system 2: 2nd extension telephone system

3: 3rd Extension Telephone System 3A: Multi-Call Line

11a, 12a: Claims and Deputy Branch Calling Circuits

11b, 12b, 21b: Claim and sub-site spark circuits

11c, 22c: Ring automatic connection circuit 11d, 12d, 22d: Telephone circuit

11e: extension call silent circuit

The present invention relates to a telephone system for common use of a plurality of telephone lines by sharing one trunk line, which is particularly useful in such a telephone system. The present invention relates to a simple extension telephone system designed to automatically route a line to a secondary telephone side of a user's absence at a claim point.

In multi-family houses or building offices where many households live in one house, many telephones are known to be shared on a single line.

For example, Figure 1 shows a typical method of this type. In this case, the telephones were connected in parallel to one telephone line L ₁ and L ₂ , and the telephones were stored in different places to use the trunk line in common.

In addition, a private telephone exchange or a key phone, which is a more advanced telephone system, installs multiple telephones by one trunk line, and the telephones have mutual interphone functions, secret functions, and absences in logic such as system microprocessors according to the required functions. It is also known to be designed to perform an automatic response, a recording and reproducing function of a specific voice, and a speed dial function.

In addition, since the private exchange system or the like must have a separate independent driving power source, the complexity of the power supply equipment and the like causes a price increase.

However, in the prior art as described above, when a claim station and a branch office telephone are used on a trunk line when the telephone is used without using a system such as a telephone exchanger or a key phone, the claim branch telephone when a call is placed on a trunk line The ringing tone is ringing at each place at the same time, so any one of these phone users must perform unnecessary phone answering action. This caused the inconvenience that a person had to go and answer a call or say a call aloud, and when a telephone switch or a telephone is used, they are relatively expensive and require a separate independent power supply as well as their bulky size. There is a limitation in making the use universal.

In addition, when using multiple telephones with a common trunk line in a house where there is no need to use such a telephone exchange or a key phone, they are not equipped with a simple deactivation function and an interphone function. In a widely used reality, the general public rarely uses a telephone exchange or a key phone.

On the other hand, in a multi-line telephone system in a building where nightly work is required after a clerk or the like, a night telephone is operated in a watch room to use only a few representative lines among various telephone numbers. If an outsider who is not familiar with the telephone number calls a telephone number other than the predetermined telephone number, the person who is not in the telephone claim office is not able to make a call, which causes a loss of the opportunity to deliver urgent business.

As described above, in the prior art, when a plurality of telephones are installed and operated in a single line, it is inconvenient to use as described above. A private telephone exchange or a key phone equipped with an interphone is not only expensive, but also difficult to be used in general houses. In particular, since there is an unnecessary function such as multi-line selection in the use of a general house, there is a problem that the proper use cannot be expected.

In addition, there were inconveniences in operating a telephone because there was no means to automatically receive a call from a subsidiary station telephone in the absence of a user of an alleged telephone telephone even when operating a night telephone such as a watch room in a multi-line building.

An object of the present invention has been developed to improve the prior art as described above.

The main purpose of the present invention is that the telephone system sharing a single line can be switched to the branch office telephone automatically in the absence of the alleged telephone telephone while having the interoperability and mutual calling functions. It is to provide an extension telephone system.

It is another object of the present invention to provide an automatic switching function such that when a user is absent from the telephone station of various lines in the office room such as night operation in a telephone system using a large number of lines, the user automatically takes the line aggregation location such as the office room. It is to provide the extension telephone system which makes it possible to create a new use of such telephone system.

In particular, the present invention provides a ring automatic connection circuit which allows a call to be connected to a subsidiary station telephone in the absence of a user when a telephone is connected to a predetermined telephone line, and a subsidiary caller circuit that enables the subsidiary telephone to be called from the subsidiary telephone. And a claiming telephone section including a claiming consumption circuit that blocks the track of the branch office telephone when the call is being made from the claiming telephone. The line is connected by the missed ring automatic connection circuit in the claim station telephone line while sharing the line with the claim station telephone part, and also in the deputy consumption circuit, which disconnects the line of the claim station phone when the call is made from the deputy station phone. It is characterized by an extension telephone system that makes up the branch office telephone department, including the branch office calling circuit for calling the alleged small telephone.

Another feature of the present invention is the multi-line telephone, wherein the multi-line telephone unit is provided at each point in the office in each of a plurality of individual lines, and the multi-line telephone line connected with the respective claim telephone line has a secret line and a line call circuit for each line. It is in an extension telephone system with a wealth configuration.

In addition, other features of the present invention will be understood by examining this in more detail with the accompanying drawings.

That is, FIG. 2 shows the extension telephone system 1 according to the present invention. In this case, the claim telephone line 11 and the subsidiary telephone line 12 are provided between one telephone line L _l and L ₂ , and the claim telephone line 11 and the subsidiary telephone line 12 are separated for convenience. The sub-site phone unit 12 may be present in plurality.

In addition, the claim telephone telephone section 11 and the subsidiary telephone telephone section 12 are each the claim telephone calling circuit 11a or the subsidiary telephone telephone section 12 from the subsidiary telephone telephone section 11 to the minor telephone telephone section 12 axis. Of the sub-site phone section 12 or the sub-site phone section 11 between the sub-site call circuit 12a on the side of the sub-site phone section 11 and the sub-site phone section 12 on the side of the sub-site phone section 11 at. Selection switch (TS ₁ , TS ₂ ) to selectively have the functions of the claim consumer circuit (11b) and the subsidiary consumer circuit (12b) for disconnecting lines, and the claim sub phone unit 11 or sub station phone unit 12; ) And known telephone circuits (11d, 12d), including the secretion confirmation switch (BS ₂ , BS ₄ ) to communicate with the secretion switch (BS ₁ , BS ₂ ) to inform the confirmation of the secretion, respectively, In the place telephone unit 11, the ring automatic connection is automatically switched to the sub-site telephone unit 12 after a certain period of time during the absence of the user of the insisting small telephone unit 11 side Is to (11c) and the extension call mute circuit (11e) is not provided, respectively.

In addition, the circuit block of the second embodiment is shown as a third diagram in an embodiment of the more detailed embodiment.

Here, a telephone circuit (X) including a normal call circuit (X ₁ ) and a ringer (X ₂ ) is provided in the claim telephone section 11 and the subsidiary telephone section 12 between one telephone line line L _l , L _2. Between the L ₁ , L _2, and the call circuit (X1), a branch call call indicator (LD _l ) installed on the telephone of the main telephone line owner (11) and a ringer (X ₂ ) on the side of the telephone station (12). Subsidiary call call furnace 11a including sub-site call switch S ₁ and a first rectifier BD ₄ by diodes D ₁ -D ₄ , which are connected directly to the sub-site call part 11 By claim ringing switch (RS ₂ ) and dialo (D ₅ ~ D ₈ ) that directly connects ringer (LD ₂ ) and ringer (X ₂ ) on the side of ring terminal ( ₁₁ ). Including the second rectifier BD ₂ , the sub-site call circuit 12a is connected to _one end of the sub-site call switch RS ₁ so that the ringer X ₂ on the charge-call telephone part 11 side is kept for a predetermined time. Keep crying And there is a ring automatic connection indicator (LD ₃₎ and a location unit for ringeum line telephone directory 12 side stringer (X ₂₎ as a relay for coupling the control direct (RY) and the contact (RYa) to indicate this case does not, The third rectifier BD ₃ and the conventional hook switch HS ₁ by the diodes D _{3 to} D ₁₂ which provide DC power from the line L ₂ to the circuits such as the indicator LD ₃ and the relay RY. Ring automatic connection circuit 11c is configured to include the recovery switch Ha for restoring the driving power of the relay RY to its original state in conjunction with Insistence consumption switch which cuts off the line leading to the alleged sub telephone part 11 or the sub small part telephone part 12 among the evolutionary lines of L _l and L ₂ jointly connected by the telephone part 11 and the sub-site phone part 12 with a spark switch. (BS ₁ ) or sub-supply switch (BS ₂ ), the telephone circuit (X) side ringer (X ₂ ) and the call switch (RS ₁ , R) S ₂ ) between the subsidiary or sub-capitalization confirmation switch (BS ₂ , BS ₄ ) directly connecting them to the secretion switch (BS ₁ , BS ₃ ) is installed to interlock.

In addition, between the line L ₂ and the hook switches HS ₁ and HS ₂ , an internal call silencer 11e is provided to prevent the line from being cut off for 30 seconds or more.

Here, reference numeral R ₁ is a charge discharge resistor charged in the capacitor (C ₃ ), R ₂ , R ₃ is a resistor to prevent the disconnection of the external call during the call to the sub-site phone during the call, R ₁ , R ₃ is Ring tone selection resistor, VR _l is ring tone adjustable variable resistor, VR ₂ is relay (RY) drive control variable resistor, C ₁ , C ₂ are AC signal bypass capacitors.

On the other hand, the extension telephone system 1 of FIG. 3 shows another embodiment as shown in FIG.

That is, in this case, the _second telephone system, in which the extension telephone system according to the present invention is applied directly to the telephone line lines L _l and L ₂ at a relatively long distance, rather than a short distance for the extension of the telephone line between the subsidiary telephone unit 11 and the branch office telephone unit 12. As an example, this is connected to the telephone lines L ₁ and L ₂ in parallel with the claim telephone telephone section 21 and the sub-site telephone telephone 22, respectively, and has a configuration in which the claim consumption circuit 21b is included.

In addition, when the telephone of the claim telephone section 21 is used as an old mechanical telephone as it is, it is possible to form a second chamber phone system 2 by connecting to the dotted line in the drawing without installing the claim consumption circuit 21b. .

5 shows a third extension telephone system 3 according to the present invention.

In this case, the claim telephone telephone section 31, which has the auxiliary station calling circuit 11a and the claimed consumer circuit 11b removed from the claim telephone telephone section 11 in FIG. 2 and has only a ring automatic connection circuit 11d, is connected to each trunk line. N lines are provided for each of the lines L _{11 to} L _1n and L _{21 to} L _2n , and the multi-line telephone part 3A side is a normal multi-telephone line (y) side in the lines L _{1 to} L _ln or L _{21 to} L _2n , respectively. A call sparking section 3a _{1 to} 3an including a calling circuit 3Y and a sparking circuit 3X for calling the claim-call telephone sections 31 to 3n or for carrying out a sparking operation by blocking the telephone line. The third extension telephone system 3 is constituted.

The present invention of such a configuration is as follows.

That is, in the extension telephone system 1 of FIGS. 2 and 3, when the telephone line L ₁ , L ₂ is called, the telephone line L ₁ → the branch telephone consumption circuit 12b of the branch telephone line 12 side → The claim telephone call section 11 side of the claim telephone call circuit 11a → the known telephone outward (X) → L ₂ is connected to generate a ring tone from the ringer X ₂ on the telephone circuit X side.

At this time, when the user of the claim telephone section 11 receives a call, the ringer (X ₂ ) is disconnected due to the normal hook switch (HS ₁ ) and the call circuit (X _l ) is continued, so the claiming user can proceed with the call. Can be.

In addition, when the caller does not have any work on the receiver of the claim telephone section 11, but the user on the branch telephone section 12 is busy, the user of the claim telephone section 11 side is the deputy telephone section 12. The user on the side call the user of the sub-site phone section 12 using the claim call circuit 11a.

At this time, if the user of the claim telephone call unit 11 side presses the call switch RS ₁ of the claim calling circuit 11a as shown in FIG. ₃ , the telephone line L ₁ → the call switch Rs ₁ → of the first rectifier BD _l . D _l → the subsidiary call indicator (LD ₁ ) of the light emitting diode → D ₂ of the _first oil purifier (BD ₂ ) → ringer (X ₂ ) on the side of the subsidiary phone part 12, so that the claim telephone part 11 The call indicator LD ₁ lights up while the ringer X ₂ on the sub-site telephone part 12 rings.

In this state, when the user of the subsidiary phone part 12 receives a hand cell, the hook switch HS ₂ is also switched to a known call circuit X ₁ so that the user of the subsidiary phone part 12 side track line L _l ,. You can proceed with the call using L ₂ .

Then, in order to prevent the user of the sub-site phone section 12 side from overhearing the user of the sub-site phone section 11, pressing the spark switch BS _{3 which} is the sub-site consumption circuit 12b on the sub-site phone section 12 side, The telephone line L ₁ of the place telephone unit 11 is disconnected, and thus the telephone operation of the alleged small telephone unit 11 cannot be performed.

In addition, the ring automatic connection indicator (LD ₃ ) is turned on in the situation where the user is absent or does not pick up the hand cell for a certain period of time even though the ringer (X ₂ ) continues to ring because the telephone is called on the claim telephone part 11 side. On the other hand, when the DC power is charged by the capacitor C ₃ of the ring automatic connection circuit 11C and the DC potential reaches a predetermined level, the relay RY of the ring automatic connection circuit 11c is operated.

By the relay RY operation, the contact RYa is connected to the condenser C ₄ side, and the signal sound input to the call switch RS ₁ is condenser C ₄ → ringer X _{2 at the} subsidiary phone part 12. ) Ringer (X ₂ ) on the subsidiary telephone part (12) sounds due to the closed circuit _from the hook switch (HS ₁ ) to L ₂ .

And, the delay time of the ring automatic connection circuit (11c) can be connected at any time using the variable resistor VR _l , VR ₂ and the delay setting switch SW ₁ , when the user does not have a predetermined time to lift the hand cell When the phone temporarily charged to the capacitor (C ₃ ) by the ring automatic connection circuit (11c) recovery switch (Ha) interlocked with the hook switch (HS ₁ ) is rapidly discharged through the resistor (R _l ) The ring ringing does not occur on the subsidiary phone part 12 side and initializes the timer operation of the ring automatic connection circuit 11c.

In addition, when the call proceeds in the claim telephone section 11, pressing the spark switch BS ₁ , which is the claim talking circuit 11b connected to the telephone line L ₂ of the sub-site telephone section 12, the sub-site telephone section 12 The telephone line L ₂ is disconnected, so that only the claim telephone line 11 can proceed to the call, and the extension call silence circuit 11e uses the switch CS ₁ to make the claim telephone line 11 and the subsidiary phone line 12. When the intercom function is carried out with each other, if there is no line connection at the telephone station itself (more than about 30 seconds, such as a telephone call), the disconnection noise can be eliminated to eliminate the phenomenon of blocking the call line. Choose to

In addition, the primary location or director consumption screen switch (BS _1, BS ₂₎ the re-press after use wherein the spark switch (BS _1, BS ₂₎ by the spark detection switch (BS _2, BS4) that works by pressing In case of forgetting to return to normal, L ₁ → call switch RS _l (RS ₂ ) → spark confirmation switch BS ₂ (BS ₄ ) → ringer (X ₂ ) → hook switch HS (HS ₂ ). X ₂ ) continues to operate and the user can recognize the sound by ringer (X ₂ ) and return to the original state by pressing the switch BS ₁ (BS ₃ ).

On the other hand, when the subsidiary phone part 12 calls the claim sub phone part 11 side, the second rectifier BD is pressed again when the call switch RS ₂ of the sub-site call part 12 side is pressed. ₂₎ of the diode (D _5), and annunciator (LD _2), the diode (D _7), the main place telephone directory 11 side stringer in the track as (X ₂₎ is followed because ringeum in standing state place telephone directory 11 is sounded The call indicator LD ₂ provided in the telephone or the like of the subsidiary telephone section 12 is displayed in the lit state.

In addition, the line L ₁ and the telephone circuit by using the call switches RS ₁ and RS ₂ while the outside and the telephone line using the telephone lines L _l and L ₂ are in progress in the subsidiary telephone telephone section 11 or the subsidiary telephone telephone section 12. In order to prevent each break (X) through the resistors R ₂ and R ₃ , the other party 11 and 12 are connected to each other during the telephone call (using the call switches RS ₁ and RS ₂ ). Can be called.

On the other hand, the telephone extension system 1 of FIGS. 2 and 3 has a relatively short distance which is relatively difficult to expand telephone lines La to Ld in a mutual relationship between the claim telephone telephone section 11 and the branch telephone telephone section 12. FIG. Although the use mode of the present invention is shown, in the situation where it is difficult to add the telephone lines La to Ld and the like, the second telephone extension system 2 of the fourth embodiment can be used.

In this case, the two main lines of the telephone lines L _l and L _{2 have} the claim telephone telephone section 21 having only the secret circuit 21b and the branch telephone telephone section 22 having only the ring automatic connection circuit 22c. When the hand cell is not lifted from the telephone for a predetermined time, the ring automatic connection circuit 22c on the sub-site phone part 22 is activated to ring the ringer (X ₂ ) of the sub-site phone part 22. The user of the telephone book 22 can make a call as it is.

Further, in the third extension telephone system 3 of the fifth embodiment, a plurality of alleged small telephone units 31 to 3n each having ring automatic connection circuits automatically ring after a predetermined time ringing due to a user's absence. The ring corresponding to the predetermined station number rings in the multi-line telephone circuit Y on the side of the multi-line telephone line 3A that is gathered, so that a multi-line telephone call can be automatically made at one place.

If necessary, the multi-line telephone telephone section 3A to the multi-line telephone telephone section 3A side by using the secreting circuit 3X or the calling circuit 3y of the telephone caller 3a _{l to} 3an. 3n) is called but the trunk line is disconnected, so that the call of the subsidiary telephone divisions 3l to 3n and the secretion function on the multi-line telephone division 3A can be performed.

In the present invention, the telephone system which uses one telephone line jointly is easily used by a simple circuit, and the telephone itself has a secretion function, a relative telephone call function, a ring automatic connection function, and the like. In the multi-line telephone system, the ring tone is automatically connected to the sub-site telephone where the multi-line is collected from a plurality of alleged sub-phones, thereby making it possible to guarantee convenience in the operation of a night call. Is there.

Claims (3)

In a telephone system in which a plurality of telephones including a telephone circuit (X) are used in parallel on one telephone line L ₁ and L ₂ , the plurality of telephones are assumed to be divided into a claim telephone and a plurality of subsidiary telephones. At the same time, they share a single telephone line L _l , L ₂ , and each of the claim telephone and sub-site telephones has a call circuit (11a, 12a) of the other side and a sparking circuit (11b, 12b) by a spark switch that disconnects the line. The claim telephone telephone section 11 and the branch telephone telephone section 12 are provided in common, and the claim telephone telephone section 11 charges the capacitor charge provided from the telephone line at least when a telephone call is made and the hand cell is not lifted for a predetermined time. An extension telephone system characterized by a related configuration including a ring automatic connection circuit 11c which automatically connects the ring signal to the sub-site telephone section 12 by the operation; 2. The calling circuit 11a or the sub-site calling circuit 12a of the claim-call telephone section 11 and the sub-site telephone section 12 is known from either of the shared telephone lines L ₁ and L ₂ . a telephone circuit (X) of the stringer (X ₂₎ call to regulate the continued to one side and leading to the track section place telephone directory 12 (week place telephone directory 11) side stringer (X ₂₎ to the switch (RS _1, RS ₂ ) Is parallel to the resistors R _l and R ₂ , and between the call switches RS _l and RS ₂ and the other ringer X ₂ , respectively, the call indicators LD _l and LD ₂ and the first call indicator (LD _l and LD ₂ ). Telephone extension system characterized by a configuration including two rectifiers (BD _l , BD ₂ ), 2. The ring automatic connection circuit (11c) according to claim 1, wherein the ring automatic connection circuit (11c) includes a third rectifier (BD ₃ ) and a third rectifier (BD ₃ ) for generating a direct current source from any one of telephone lines L ₁ and L ₂ . A time constant circuit of a capacitor and a resistor for charging a constant charge, and a relay (RY) operating at a constant potential level of the capacitor and a telephone line connected to a ringer (X ₂ ) of the other subsidiary telephone part 12 side. An extension telephone system, characterized in that it is associated with the RYa.

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