JPH06113014A - Electronic exchange system - Google Patents

Abstract

(57) [Abstract] [Purpose] The object of the present invention is to simplify dial operation,
An object of the present invention is to provide an electronic exchange system capable of easily receiving an incoming call at an extension of a destination. [Constitution] In a private branch exchange system for connecting to an ISDN public network, a conversion means 26a for converting a shortened code of a destination to a corresponding subscriber number of a public network, a predetermined designation input from an extension terminal and a shortened code of a destination, and Upon receiving the destination sub-address information, the conversion means obtains the public network subscriber number based on the shortened code, sets this in the ISDN destination number element, and forms the required message using the destination sub-address information as the ISDN destination sub-address information, Means of calling to the ISDN network 25
It is configured by including a and.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a private branch exchange system used by connecting to an integrated service digital network.

[0002]

2. Description of the Related Art In recent years, various communication network systems have been developed with the progress of communication technology and the diversification of communication forms. Among them, a digital integrated service network (ISDN;
integrated services digital network). this
ISDN comprehensively provides telephone, data, facsimile communication, and various communication processing services through digital communication lines. A communication system using this ISDN is configured as shown in FIG. 6, for example.

That is, this system has a digital communication line exchange 14 to which the line exchange network 11, the packet exchange network 12, the common line signaling network 13 and the like are connected, and the subscriber line 19 is connected to the digital communication line exchange 14. Is connected to the network terminating device 18 in the user's house, and this network terminating device 18 is connected to the house bus 10 in the user's house.

Up to eight communication terminal devices 16 such as a telephone device, a facsimile device, a voice mail device, a printing device and a personal computer can be connected to the home bus 10. Further, it can be used by connecting to an existing telephone or the like which does not have a function as an ISDN terminal through a terminal adapter 15 for taking an interface between the existing terminal and ISDN.

Then, a plurality of communication channels are selectively used for each subscriber line 19 to perform desired communication between communication terminal devices. For example, in a basic interface with a transmission rate of 192 kbit / s, two B channels of 64 kbit / s,
One 16-kbit / sec D channel is time-division multiplexed and data is transmitted using these channels.

In such a system, conventionally, when a private exchange system uses a public network such as a digital circuit switching network 11 to perform mutual communication with an extension accommodated in a remote private branch exchange system, a call is transmitted. By dialing the special number for calling the public network from the extension terminal and dialing the other party's representative telephone number of 9 to 10 digits registered in the public network, the representative telephone of the other exchange is once called via the public network. If you call and are connected to this representative telephone, either give the extension number to the operator of this representative telephone, or nominate a department or person you want to talk and have the operator transfer to the extension of the other party. It was

[0007] Therefore, the dial operation becomes very troublesome, and it becomes possible to talk with the intended partner in order to have the partner operator at the called place take over to the intended extension. It takes a lot of time and effort, and lacks responsiveness, which is a problem in terms of user service.

On the other hand, in the case of using the ISDN network, if a sub-address is set in the partner extension terminal, the sub-address can be added to directly make a call to this extension terminal. Even when a specific ISDN terminal is called by using the subaddress information element, many dial operations are required, such as a station line calling special number + a callee representative number + a subaddress input identification operation + a subaddress number. Therefore, there is a problem in terms of operability for the user.

[0009]

As described above, when a call is made between business sites that use the private branch exchange system in ISDN, if the public network is used to communicate with the other business site, the call extension From the terminal, first dial the special number for calling the public network, then dial the representative number of the partner business if it is connected to the public network, and if the system receives by the representative phone at the partner business, Since the call is received at this representative telephone, it is necessary to take a procedure for the operator of this representative telephone to take over to the extension with the intended other party.

For this reason, the caller must dial a multi-digit telephone number, and must call the operator of the representative telephone who answers in order to take over the person who wants to talk. It was necessary, and it took time and labor before being able to talk to the intended other party, and lack of responsiveness was a problem in terms of user service.

When an ISDN network is used, if a sub-address is set on the extension terminal of the other party, the sub-address can be added to make a direct call to this extension terminal. There is a problem in that it is extremely inconvenient to use because it requires dial operation over many digits.

Therefore, an object of the present invention is to improve the service to the user by simplifying the dial operation and allowing the incoming call to the extension of the intended partner. It is to provide an easy-to-use electronic exchange system.

[0013]

In order to achieve the above object, the present invention is configured as follows. That is, in a private branch exchange system for connecting to an ISDN public network, a conversion means for converting a destination shortened code into a corresponding public network subscriber number, a predetermined designation input from an extension terminal, a destination shortened code and a destination subaddress. Upon receiving the information, the conversion means obtains a public network subscriber number based on the shortened code,
And a means for forming a required message by setting the called sub-address information as ISDN called sub-address information, and sending it to the ISDN network.

[0014]

In such a structure, when a predetermined designation input, for example, a special number dial, a destination shortening code and destination subaddress information is generated from the extension terminal, the conversion means converts the destination shortening code into the public network subscriber. A number is obtained, this is set in the ISDN called number element, and a required message is formed by using the called sub address information as the ISDN called sub address information and transmitted to the ISDN network.

Therefore, if the destination shortening code is determined for each business site and the subaddress of the extension terminal is set to the extension number, the business can be performed by simply dialing the special number, business site code and extension number. IS the subscriber number of the venue
Set the DN called number element and form the required message using the extension number as ISDN called subaddress information.
Send to the net.

Therefore, the ISDN network performs call control on the line of the partner business site and sends the message. for that reason,
It is possible to make an incoming call directly to the corresponding extension terminal of the partner business site connected to the ISDN network. Therefore, the user can perform a short dial operation by simply dialing the special number and the abbreviated number and extension number of the business site to call. You will be able to call your extension.

As described above, in the private branch exchange system for connecting to the ISDN public network, the dial digit string sent from the extension terminal at the time of calling is divided into three elements, and the first element (special number) is ISDN. The second element (short code of the other party) used for identification of the public network transmission is converted into the public network subscriber number registered in advance corresponding to the numeral string, and then set in the ISDN called number element, Since the element 3 (extension number, etc.) has a function of setting the called sub-address information element,
According to the present invention, even if the user does not know the subscriber number of the other party, if he / she knows the business site code and the extension number, it becomes possible to make a call to the intended extension of the other business site.
It is possible to provide an electronic exchange system capable of communicating with an intended partner by a short dial operation, which can dramatically improve operability and usability.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the present invention. In the figure, reference numeral 21 is a main body of the exchange for private exchange, and 31 is an extension terminal accommodated in the exchange.

The exchange main body 21 has an ISDN office line interface.
22, an ISDN terminal interface 23, a standard telephone terminal interface 23a, a switching section 24, a control section 25, and a memory section.
26 and are provided. ISDN station line interface 22 is IS
It is for interfacing with the DN network 20, and IS
It has a function as a function group of the network terminator 2 (NT2) in the DN. In other words, protocol processing at layers 2 and 3, multiplexing at layer 2 and 3, switching, concentrating, maintenance functions,
It has a function called interface termination.

The ISDN terminal interface is an interface for connecting a terminal having a standard ISDN interface to the exchange 21, and the extension terminal 31 accommodated in the exchange 21 is a standard ISDN interface. It is a terminal with a device.
Examples of the extension terminal 31 include a telephone, a personal computer, a facsimile device, a voice mail device, and a videophone. Of course, besides this, an existing communication terminal without an ISDN interface can be connected.

The exchange unit 24 is for connecting lines, the control unit 25 is responsible for various controls of the components of the exchange main body 21, and the memory unit 26 is for the control unit 25 to perform various controls. In doing so, it is used to hold various control programs and data required.

In this system, the control unit 25 has an ISDN message processing function for editing and calling an ISDN message, and the memory unit 26 has a code-telephone number conversion table. If you dial a special number, business site code, and extension number from the extension terminal 31, the code-
Search the public network subscriber number (subscriber telephone number) corresponding to the business site code from the telephone number conversion table, extract the relevant public network subscriber number, add the extension number to this, and add ISDN.
Prepare the format required for messages, and then use the ISDN network.
It is configured to send to 20.

In the ISDN network, when this ISDN message is received from the exchange main body 21 via the ISDN office line interface 22,
Based on the information of the public network subscriber number, call control is performed to the corresponding subscriber and an ISDN message is sent.

Here, in ISDN, by setting a sub-address to a terminal, it is possible to make an incoming call to a terminal having the same sub-address, and the sub-address can be freely set by the user and can be changed. Therefore, in this system, an extension number is assigned as a sub address.

FIG. 3 shows an example of the business office code and representative number conversion table. The conversion table 4 is prepared by preparing a simple number string for each business office to be used in advance and using this as a business office code, which is associated with a representative number (subscriber number) contracted with the public network. FIG. 2 shows the functional blocks of the essential parts of the system of the present invention.

The control unit 25 of the exchange main body 21 has an ISDN message processing function unit 25a, and the memory unit 26 has a code-telephone number conversion table 26a. When the dial signal from the extension terminal 31 is supplied, the ISDN message processing function unit 25a reads the subscriber number corresponding to the business site code in the dial signal from the code-telephone number conversion table 26a, and the IS
Edit the called number of the DN message and the extension number of the other party dialed from the extension terminal to correspond to the ISDN sub-address, create a predetermined ISDN message and make a call.
This is a process for sending a DN message to the ISDN network 20.

FIG. 4 shows the present exchange system having such a configuration.
It is installed in the remote workplaces A and B like
It is assumed that it is connected to the DN network 20. And now, for example, as shown in FIG. 4, the extension number of the business site A is the representative number "0423851111".
If you make a call to the extension of business site B, and the code of business site B is “343” and the extension number of the person you want to call is “3727”, the extension of business site A is an outside line. Special code and code of business site B (“343”), and
Dial the other party's extension number (“3727”).

Then, in the exchange main body 21 of the business site A, the control unit 25 functions so that the message processing function unit 25a uses the business-site code "34" from the code-telephone number conversion table 26a.
The representative number "0423851111" corresponding to 3 "is found, this number" 0423851111 "is set as the called number of the ISDN message, and the extension number" 3727 "is registered in the subaddress, and then the call is made using the ISDN public network 20. To do.

In response to this, in the public network 20, the business office B to which the destination number is registered is selected, and the exchange main body 21 of the business office B is selected.
To call. In the exchange main body 21 of the business office B, the control unit 25 uses the subaddress in the received ISDN message to make an incoming call to the extension "3727" of the own station.

Not only between private branch exchanges at remote locations,
As shown in FIG. 5, it is also possible to specify one of a plurality of bus-type ISDN terminals TE connected to the ISDN public network 20 to receive an incoming call. For example, there are a plurality of bus-type ISDN terminals TE1 to TE4 connected to the ISDN public network 20, each of which is "4001" to "40".
It is assumed that the sub address "04" is assigned and the subscriber numbers of these are "03-359-5311".

If it is assumed that the business office code "511" is assigned to this "03-359-5311" in the business office A switch 21 (PBX-A), the business office A switch 21 When trying to call the ISDN terminal TE2 from an extension, first dial the special number, then the business site code "511" and then dial "4002".

As a result, the exchange 21 of the business office A starts from the business area code "511" and corresponds to the subscriber number "03-359-5311".
", And use this as the called number, and form an ISDN message with" 4002 "as the called subaddress information.
Send to net 20. In response to this, the ISDN network 20 side performs call control for the subscriber number "03-359-5311", and the ISDN
Send the message to the line with the subscriber number "03-359-5311".

As a result, the call arrives at the corresponding ISDN terminal TE2 of the incoming subaddress information "4002", and the ringer of this ISDN terminal TE2 rings, and at the stage of responding by going off-hook, the call from this terminal to the business site A is made. Allows you to talk to your extension.

As described above, according to this system, the user does not need to be aware of the telephone number of the other party, and a simple operation is sufficient. In addition, it is possible to make mutual extension call reception using an arbitrary office code even between offices that do not have dedicated line facilities.

As described above, in the private branch exchange system for connecting to the ISDN public network, the conversion means for converting the partner shortening code corresponding to the predetermined public network subscriber number into the corresponding public network subscriber number. When receiving a predetermined special number dial, destination shortened code and called subaddress information from the extension terminal, the conversion means obtains the corresponding public network subscriber number of the shortened code, sets this in the ISDN called number element, and sets the called subaddress. It is configured by forming a required message using the information as ISDN destination sub-address information and transmitting the message to the ISDN network.
When a predetermined special number dial, destination shortened code and destination subaddress information are generated from the extension terminal, the corresponding public network subscriber number of the destination shortened code is obtained by the converting means, and this is set in the ISDN called number element. A desired message is formed by using the destination sub-address information as ISDN destination sub-address information and is transmitted to the ISDN network.

Therefore, if the destination shortening code is determined for each business unit and the subaddress of the extension terminal is set to the extension number, the special code, the business site code and the extension number can be dialed to complete the business. IS the subscriber number of the venue
Set the DN called number element and form the required message using the extension number as ISDN called subaddress information.
Send to the net.

Therefore, the ISDN network performs call control on the line of the partner business site and sends the message. for that reason,
It is possible to make a direct call to the corresponding extension terminal of the partner business site connected to the ISDN network. Therefore, the user can make a short dial operation by simply dialing the special number and the business site number and extension number to call. You will be able to call your extension.

As described above, in the private branch exchange system for connecting to the ISDN public network, the dial digit string transmitted from the extension terminal at the time of calling is divided into three elements, and the first element (special number) is ISDN. It is used to identify the public network call, and the second element (shortened code of the other party such as business site code) is converted into a public network subscriber number registered in advance in correspondence with the numeral string.
Set as the ISDN called number element and the third element (extension number, etc.)
According to the present invention, the user does not need to know the other party's subscriber number, but the other party's business if he / she knows the business site code and extension number. It becomes possible to make an incoming call to the intended extension on the field, and to communicate with the intended partner by a short dial operation, and it becomes possible to achieve a dramatic improvement in operability and usability.

The present invention is not limited to the embodiments described above and shown in the drawings, but can be modified and implemented without departing from the scope of the invention. As the destination sub-address information, any information other than the extension number can be used.

[0040]

As described above in detail, according to the present invention, even if the user does not know the subscriber number of the other party, if the user knows the business site code and the extension number, the call is received at the intended extension of the other business site. As a result, it is possible to provide an electronic exchange system in which communication with a target partner can be performed with a short dial operation and operability and usability can be dramatically improved.

[Brief description of drawings]

FIG. 1 is a schematic block configuration diagram showing an embodiment of the present invention.

FIG. 2 is a functional block diagram of the device of the present invention.

FIG. 3 is a diagram for explaining a code-phone number conversion table.

FIG. 4 is a diagram for explaining an operation example in the system of the present invention.

FIG. 5 is a diagram for explaining an operation example in the system of the present invention.

FIG. 6 is a diagram for explaining the outline of ISDN.

[Explanation of symbols]

21 ... Exchanger body 22 ... ISDN office line interface 23 ... ISDN terminal interface 24 ... Exchange section 25 ... Control section 25a ... ISDN message processing function section 26 ... Memory section 26a ... Code-telephone number conversion table 31 ... Extension telephone (Extension terminal).

Claims (1)

[Claims] 1. In a private branch exchange system for connecting to an ISDN public network, a converting means for converting a destination shortened code into a public network subscriber number, a predetermined designation input from an extension terminal, a destination shortened code and a called subaddress. Upon receiving the information, the conversion means obtains a public network subscriber number based on the destination shortening code,
An electronic exchange system comprising means for setting a DN destination number element and forming a required message using the destination subaddress information as ISDN destination subaddress information and transmitting the message to an ISDN network.