JP2002142022A - Private branch of electronic exchange - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a private branch of electronic exchange that can control dialing restriction on the basis of a caller number (incoming call number) supplied form a telephone line. SOLUTION: The private branch of electronic exchange is provided with telephone line interfaces I/F1-I/Fn that contain telephone lines L21-L2n, a speech path switch 2, and a dial restriction means 3, receives a caller telephone number by utilizing a caller number notice service of a station exchange 20, collates a received incoming call number with a subscriber number registered in advance, and restricts dialing from the caller on the basis of the dial service restriction that is set corresponding to the registered subscriber number when both the telephone numbers are coincident.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic private branch exchange, and more particularly to an electronic private branch exchange that regulates various levels of outgoing calls in response to telephone numbers from callers (subscriber telephones).

[0002]

2. Description of the Related Art In a conventional electronic private branch exchange, a general subscriber telephone is temporarily connected to a private branch exchange (PBX) via a telephone line (hereinafter, referred to as an incoming call on the PBX side).
From this state, it is known that a subscriber telephone can make a dial call and an outside line can be transmitted through a telephone line different from the telephone line having the incoming call.

[0003] Therefore, since an incoming call arriving at the PBX can be further transmitted to an external line, there is a possibility that an external line is transmitted without any restriction.

In order to prevent this, a user (for example, P
To receive this outside line calling service by setting an individual code to a limited party such as a company or corporation that uses BX, and entering the set code from the subscriber telephone (caller). Can be.

In addition, various levels of transmission restrictions are set in accordance with individual codes, for example, transmission is possible only in the city, transmission in the city is possible and transmission outside the city is possible, and there is no restriction.

[0006]

However, in the conventional electronic private branch exchange, since the outgoing line service from the incoming call can be restricted by an individual code, the service is restricted.
There is a problem that anyone can use the service from any telephone as long as the code can be known. In particular, codes without transmission restrictions are known, and the damages caused by unauthorized use are large.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide an electronic system capable of controlling outgoing calls based on the telephone number (called number) of a caller supplied from a telephone line. A private branch exchange device is provided.

[0008]

In order to solve the above-mentioned problems, an electronic private branch exchange according to claim 1 receives a telephone number of a caller, and receives the telephone number of the caller (an incoming call number). Check with the subscriber number registered in advance, and if both phone numbers match, based on the restriction of the calling service set corresponding to the registered subscriber number,
It is characterized by having a transmission restriction means for restricting dial transmission from a caller.

[0009] With this configuration, since the transmission restriction means for restricting the transmission corresponding to the incoming call number is provided, it is not necessary to set an individual code for the subscriber and input the code when dialing.
It is characterized in that outgoing calls can be restricted only by performing normal dial operations, dial dial operability is excellent, and unauthorized use can be prevented.

[0010] Further, the transmission restriction means according to claim 2 comprises:
Incoming call number storing means for storing the incoming call number, subscriber number storing means for registering the subscriber number in advance, number matching means for comparing the incoming call number with the subscriber number, and calling restriction data corresponding to the subscriber number in advance. Supplied from the restriction data storage means for storing, the transmission number storage means for storing the transmission number of the dial call from the caller, the transmission restriction determination means for determining the transmission restriction of the transmission number based on the restriction data, and the transmission restriction determination means. Logic operation means for performing a logical operation of a judgment signal supplied from the number operation means and an inquiry signal supplied from the number operation means, and restricting dialing from the caller based on the logical signal supplied from the logical operation means. I do.

[0011] With this configuration, the outgoing call restricting means compares the incoming call number with the pre-registered subscriber number, and if both match, applies the outgoing call corresponding to the subscriber number. Outgoing call restriction can be imposed only by performing an operation, and excellent dial call operability is achieved, and efficient outgoing call restriction corresponding to the subscriber can be realized.

According to a third aspect of the present invention, the transmission restricting means uses a caller ID notification service provided by the central office.

[0013] According to such a constitution, since the use of the caller ID service provided call restriction from the station exchanger, it is possible to realize without requiring any special circuit, originating with a simple structure regulations. If the subscriber does not notify the caller ID, the service can be prohibited.

According to a fourth aspect of the present invention, the transmission restricting means uses a dial-in number for the incoming call number and the subscriber number.

With this configuration, since the dial-in number notification service is used and the dial-in number is used for the incoming call number and the subscriber number, no special circuit is required, and the control of the outgoing service for each dial-in number is performed. It can be executed effectively.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a schematic configuration diagram of a communication system including an electronic private branch exchange according to the present embodiment.

In FIG. 1, the communication system comprises an electronic private branch exchange 1, a central office 20 and a subscriber telephone TEL.
1 to TELn, central office 20 and subscriber telephone set TEL1 to
The telephone lines L11 to L1n connecting the TELn and the telephone lines L21 to L1 connecting the central office 20 and the electronic private branch exchange 1 are connected.
L2n.

The electronic private branch exchange 1 includes telephone lines L21 to L21.
Telephone line interface I / F1 to I / that accommodates L2n
An Fn, a communication path switch 2 and a transmission restriction means 3 are provided.

Telephone line interfaces I / F1 to I / Fn
The communication path switch 2 is connected by transmission lines LT1 to LTn, and the communication path switch 2 and the transmission restriction means 3 are connected by a data bus DB.

Telephone line interfaces I / F1 to I / Fn
Is specifically composed of a line connection device and the like, and includes various signal receivers, signal generators, codecs, etc. (not shown),
A communication path is formed with the central office 20 via the telephone lines L21 to L2n. Further, a function for using a caller ID notification service provided from the central office 20 is provided.

The communication path switch 2 is specifically composed of an electronic switch or the like, performs an on / off operation based on a control signal supplied from the transmission restriction means 3, and performs transmission paths LT1 to LT.
By connecting or disconnecting between Tn, the telephone line L21 is connected via the telephone line interfaces I / F1 to I / Fn.
ＬL2n are connected or disconnected.

The transmission restricting means 3 is specifically composed of various arithmetic functions, processing functions, memories (storage means), etc. based on a microprocessor or the like. These details will be described later with reference to FIG.

The caller's telephone number is received by using the caller ID notification service of the central office 20 and the received caller's telephone number (incoming call number) is collated with a previously registered subscriber number. When both telephone numbers match, the dialing from the caller is restricted based on the calling service restriction set corresponding to the registered subscriber number.

For example, the subscriber of the subscriber's telephone TEL1 is a party of a company or a corporation where the electronic private branch exchange 1 is installed, and the telephone number of the subscriber and the level of the transmission service restriction are determined in advance by the transmission restriction means 3. Is registered, the subscriber's telephone TEL1 only sends a call to the electronic private branch exchange 1, and without inputting an ID code or the like, the electronic private branch exchange 1
To the central office 20 via a telephone line, and can make an out-of-city call within the range of the outgoing service regulation level (for example, when the outgoing call regulation level is allowed to be outside the city).

Next, the connection operation when an outside line is transmitted from the subscriber's telephone TEL1 via the electronic private branch exchange 1 will be described with reference to FIG.

When the subscriber telephone TEL1 is operated off-hook (lifting the handset), TEL1 and the central office 20 are connected via the telephone line L11.

After confirming the dial tone from the central office 20 and calling the electronic private branch exchange 1, the route of the subscriber's telephone TEL1 → telephone line L11 → central office 20 → telephone line L21 → electronic private branch exchange 1 And the subscriber telephone T
EL1 and the electronic private branch exchange 1 are connected. In the electronic private branch exchange 1, the telephone line interface I
/ F1 → Transmission line LT1 → Talk channel switch 2 → Data bus D
B → Connection is made via the route of the transmission restriction means 3.

Next, the telephone number of the subscriber telephone set TEL1 is compared with the subscriber number set and registered in advance by the calling party number notification service provided by the central office 20. If the outgoing service regulation level set in the above is, for example, the out-of-city call is OK, the outgoing call restricting means 3 transmits the call path switch 2 via the data bus DB.
To control a vacant telephone line (for example, telephone line L2).
n) by connecting the transmission line LT1 to the transmission line LTn so as to connect to the telephone line L2n via the telephone line interface I / Fn.
Connect to 2n.

When the telephone line L21 and the telephone line L2n are connected and the subscriber's telephone TEL1 is connected to the central office 20 via the electronic private branch exchange 1, the telephone exchange L2n → the electronic private exchange 1 A dial tone is sent to the subscriber's telephone TEL1 via the route of → the telephone line L21 → the central office 20 → the telephone line 11.

After confirming the dial tone from the central office 20, it is determined in advance by calling service regulations (for example,
When the outgoing call restriction level is permitted up to the outside of the city) When a toll telephone number is entered, the outgoing call restricting means 3 of the electronic private branch exchange 1 temporarily stores the inputted toll telephone number, and then stores the toll telephone number. Is determined based on the transmission restriction level set for the subscriber number of the subscriber telephone TEL1, and if the determination result indicates that transmission is permitted (in this case, out-of-town transmission is permitted), When the outgoing call is determined to be valid, the subscriber's telephone TEL1 and the telephone having the toll-free telephone number are connected, and both telephones can talk.

On the other hand, when the international telephone number is transmitted from the subscriber's telephone TEL1, the transmission restricting means 3 of the electronic private branch exchange 1 transmits the international telephone number and the subscriber's telephone TEL.
It is determined whether to allow outgoing calls based on the outgoing call restriction level set for the subscriber number 1;
L1 is not allowed to send international phone numbers,
Prohibit outgoing international phone numbers.

As described above, the electronic private branch exchange 1 according to the present invention is provided with the transmission restricting means 3 for restricting the transmission corresponding to the incoming call number. It is possible to restrict outgoing calls simply by performing a normal dialing operation without having to make an occasional input, thereby providing excellent dial dialing operability and preventing unauthorized use.

Next, a specific configuration of the transmission restricting means 3 will be described with reference to FIG.

FIG. 2 is a block diagram of the transmission restricting means 3 according to the present embodiment. In FIG. 2, the outgoing call restricting means 3 is basically formed by a microprocessor, and includes an incoming call number storing means 4, a subscriber number storing means 5, a number collating means 6, a restriction data storing means 7, a transmitting number storing means. 8, transmission restriction determining means 9 and logical operation means 10 are provided.

The incoming call number storage means 4 stores a rewritable R
An incoming call number DT of the caller ID notification service supplied from the central office 20 is stored in a memory such as an AM, and the incoming call number DT is supplied to the number collating means 6 and the regulation data storage means 7.

The subscriber number storage means 5 is composed of a memory such as a ROM, stores the subscriber number DK of the subscriber who is subject to the calling service restriction, and compares the subscriber number DK with the number collation means 6.
To supply.

The number collating means 6 has a comparing function and a collating function, and collates the incoming call number DT supplied from the incoming call number storing means 4 with the subscriber number DK supplied from the subscriber number storing means 5. When the incoming call number DT and the subscriber number DK match, an H (High) level collation signal So is supplied to the transmission restriction judging means 9.

On the other hand, when the incoming call number DT and the subscriber number DK do not match, an L (Low) level collation signal So is supplied to the transmission restriction judging means 9.

The restriction data storage means 7 is composed of a memory such as a ROM, and a telephone number (an incoming call number) of a subscriber who can make an outgoing call in advance for each table as shown in FIG.
Is registered.

Further, data of the transmission restriction level corresponding to the table of the incoming call numbers as shown in FIG. 4 is registered, and the incoming call number DH (for example, the incoming call number shown in FIG. When the number 0455431232) is supplied, the transmission restriction level DS (the transmission restriction level 3 shown in FIG. 4) corresponding to the incoming call number DH (0455431232) is provided to the transmission restriction determination means 9.

The originating number storage means 8 has a rewritable RA
The transmission number DT transmitted by the subscriber (caller) is temporarily stored, and the transmission number DT is provided to the transmission restriction judging means 9.

The transmission restriction judging means 9 has a memory such as a ROM and a judgment function, and has a transmission restriction level D shown in FIG.
The contents of the regulation corresponding to S are stored. The regulation content is set to several digits of the telephone number to be restricted (for example, the first two digits 01 to 09 in the case of the out-of-city call regulation).

Further, when the transmission restriction level DS is supplied from the restriction data storage means 7, the transmission restriction determining means 9 determines the contents of the restriction (several digits of the telephone number to be restricted) shown in FIG. 5 corresponding to the transmission restriction level DS. Number) from a memory such as a ROM.

Further, the transmission restriction judging means 9 compares the transmission number DT supplied from the transmission number storage means 8 with the restriction contents (several digits of the telephone number to be restricted) read out from a memory such as a ROM. If the outgoing number DT does not match the regulation content (a number of digits of the regulated telephone number), it is determined that the outgoing number DT does not correspond to the outgoing call regulation, and the L-level determination signal Ho is provided to the logical operation means 10. I do.

On the other hand, if the transmission number DT matches the restriction contents (a number of digits of the telephone number to be restricted), it is determined that the transmission number DT corresponds to the transmission restriction, and the H-level determination signal Ho is logically operated. The means 10 is provided.

The logical operation means 10 has, for example, an exclusive OR function, and performs an exclusive operation on the collation signal So supplied from the number collation means 6 and the decision signal Ho supplied from the transmission restriction decision means 9. The logical sum is calculated and the operation signal Eo is calculated.
To the control terminal of the speech path switch 2.

In the initial state where there is no matching signal So from the number matching means 6 and no judgment signal Ho from the transmission restriction judging means 9, the logical operation means 10 sets both the matching signal So and the judgment signal Ho to L level, for example. Set it.

In this state, when the incoming call number DH of the subscriber coincides with the pre-registered subscriber number DK, an H-level collation signal So is provided from the number collation means 6 to the logic operation means 10. At this time, since the judgment signal Ho provided from the transmission restriction judging means 9 to the logical operation means 10 is at the L level in the initial state, the logical signal Eo output from the logical operation means 10 becomes the H level and the communication path switch 2 is turned off. The transmission line LT1 and the transmission line LTn are connected to the ON (make) state.

As explained with reference to FIG.
When a call is transmitted from L1 to the electronic private branch exchange 1 using the call restriction service, the subscriber number of the subscriber telephone set TEL1 is set as the incoming call number DH by the local exchange 20 by the caller ID notification service. The device 1 is notified of the incoming call number DH and the preset subscriber number DK.
Are matched, the electronic private branch exchange 1 connects the telephone line L21 to the vacant telephone line L2n.
Tn is connected, and the subscriber's telephone TEL1 is connected to the telephone line L21,
It is connected to the central office 20 via the electronic private branch exchange 1 and the telephone line L2n.

A dial tone is sent from the central office 20 to the subscriber's telephone TEL1, and when the subscriber transmits, for example, a toll telephone number, the toll telephone number is used as a transmission number DT as a transmission path of the electronic private branch exchange 1. It is transmitted to the central office 20 via LT1, the communication path switch 2, and the transmission path T2, and whether or not the transmission number DT can be transmitted is determined by the transmission restriction determining means 9.

Next, FIG. 5 is a diagram showing the transmission restriction level and the contents of the restriction.

When the transmission number DT is at the transmission restriction level 3 shown in FIG. 5, the out-of-city call can be transmitted, so that the L-level determination signal Ho is output from the transmission restriction determination means 9 to the logical operation means 1.
0, the collation signal So is at the H level, the logic signal Eo from the logical operation means 10 maintains the H level, the communication path switch 2 is also kept on (make), and the transmission number DT is changed to the central office exchange. 20 and can be transmitted to outside the city.

On the other hand, a dial tone is sent from the central office 20 to the subscriber's telephone TEL1, and when the subscriber transmits, for example, an international telephone number, the international telephone number is transmitted to the transmission number D.
T is transmitted to the central office 20 via the transmission path LT1 of the electronic private branch exchange 1 → the communication path switch 2 → the transmission path T2, and it is determined whether the transmission number DT can be transmitted by the transmission restriction determining means 9. Is done.

Since the outgoing service regulation set for the subscriber telephone set TEL1 is the outgoing call regulation level 3 (tolerance for out-of-city calls) shown in FIG. An H level judgment signal Ho is supplied from the transmission restriction judging means 9 to the logical operation means 10 in several digits from the beginning of DT, and the L level logic signal Eo is output from the logical operation means 10 because the collation signal So is H level. Then, the communication path switch 2 is turned off (break), the central office 20 is cut off, and international calling is prohibited.

Although the present embodiment has been described for a case where a general subscriber telephone using the caller ID notification service of the central office exchange is targeted, the present invention utilizes the dial-in number notification service of the central office exchange. The same can be applied to such a case.

In the case of the dial-in number, the dial-in number is registered in the subscriber number storage means 5 of the transmission restriction means 3, and the restriction data storage means 7 is set to correspond to the transmission restriction level DS corresponding to the dial-in number. It is configured to store data.

Next, the operation of the transmission restricting means 3 according to the present embodiment will be described with reference to FIG.

FIG. 6 is an operation flowchart of the transmission restricting means 3 according to the present embodiment.

In FIG. 6, in step S 1, the incoming call number DH, which is the telephone number of the caller (subscriber) supplied from the central office 20 in the call number notification service, is stored in the incoming call number storage means 4.

Subsequently, in step S2, the incoming call number DH and the subscriber number DK are compared by the number comparing means 6 to determine whether they match, and if they match, the process proceeds to step S3. In S7, outgoing call is prohibited.

The calling restriction data DS is read in step S3, and the calling number DT is stored in step S4. In step S5, the originating number DT is regulated using the regulation data DS, and the originating number DT is judged by the originating regulation judging means 9 as to whether or not the originating number DT is regulated.
The process proceeds to step S7 to prohibit transmission, and if there is no restriction, the process proceeds to step S6 to enable transmission.

In FIG. 6, the case of the subscriber telephone has been described. However, the dial-in will be described in the same manner as in step S1 and step S2 by replacing the incoming call number DH and the subscriber number DK with the dial-in number. be able to.

As described above, the outgoing call restricting means 3 according to the present invention checks the incoming call number DH against the pre-registered subscriber number DK, and if they match, the outgoing call corresponding to the subscriber number DK. Since the restriction is imposed, it is possible to restrict the outgoing call only by performing a normal dial operation, and it is possible to realize an efficient outgoing call restriction corresponding to the subscriber, which is excellent in operability of dialing.

The transmission restricting means 3 according to the present invention
Because the caller ID notification service provided from the central office 20 is used for the transmission restriction, the transmission restriction can be realized with a simple configuration without requiring a special circuit.

Note that this service can be prohibited if the subscriber does not notify the caller number.

Further, the transmission restricting means 3 according to the present invention.
Uses the dial-in number notification service and uses the dial-in number for the incoming call number and subscriber number.
This eliminates the need for a special circuit and enables effective control of outgoing service regulation for each dial-in number.

[0068]

As described above, the electronic private branch exchange according to the present invention is provided with the transmission restriction means for restricting the transmission corresponding to the incoming call number, so that the individual code is set for the subscriber. Even if no input is made at the time of dialing, dialing can be restricted only by performing a normal dialing operation, so that dial dialing operability is excellent and illegal use can be prevented beforehand.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a communication system including an electronic private branch exchange according to an embodiment of the present invention.

FIG. 2 is a block diagram of a transmission restriction unit according to the embodiment of the present invention.

FIG. 3 is a registration diagram of each incoming call number (incoming call number DH) according to the embodiment of the present invention.

FIG. 4 is a registration diagram of a transmission restriction level corresponding to each table according to the embodiment of the present invention;

FIG. 5 is a diagram showing a transmission restriction level according to the embodiment of the present invention and contents of the restriction.

FIG. 6 is an operation flow chart of the transmission restricting means according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electronic private branch exchange 2 Call path switch 3 Outgoing call control means 4 Incoming call number storage means 5 Subscriber number storage means 6 Number verification means 7 Restriction data storage means 8 Outgoing number storage means 9 Outgoing call restriction judging means 10 Logical operation means 20 Central office exchange TEL1-TELn Subscriber telephone set L11-L2n Telephone line I / F1-I / Fn Telephone line interface LT1-LTn Transmission line

Claims (4)

[Claims] 1. Following an incoming call from a first telephone line,
In an electronic private branch exchange that performs dialing from the caller via a second telephone line, the electronic private branch exchange receives the telephone number of the caller, and receives the received call number and a pre-registered subscriber number. And if the two telephone numbers match, the call restricting means for restricting dialing from the caller based on the calling service restriction set in correspondence with the registered subscriber number. An electronic private branch exchange, comprising: 2. The outgoing call control means includes an incoming call number storage means for storing an incoming call number, a subscriber number storage means for registering a subscriber number in advance, a number collating means for collating the incoming call number with the subscriber number, Restriction data storage means for storing transmission restriction data corresponding to a subscriber number in advance, transmission number storage means for storing a transmission number for dialing from the caller, and determining transmission restriction of the transmission number based on the restriction data. Transmission restriction judging means, logical operation means for performing a logical operation of a judgment signal supplied from the transmission restriction judgment means and an inquiry signal supplied from the number inquiry means, based on a logical signal supplied from the logical operation means 2. The electronic private branch exchange according to claim 1, wherein dialing from the caller is restricted. 3. The electronic private branch exchange apparatus according to claim 1, wherein said transmission restriction means uses a caller ID notification service provided by a central office exchange. 4. The electronic private branch exchange according to claim 1, wherein said outgoing call restricting means uses a dial-in number for an incoming call number and a subscriber number.