JP4258253B2 - Button telephone equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a button telephone apparatus, and more particularly to a button telephone apparatus used in a button telephone system in which a plurality of button telephone apparatuses are connected via a data communication network.
[0002]
[Prior art]
With the recent development of VoIP technology, a telephone device that performs a call by exchanging voice data through a data communication network constituted by a packet communication network such as the Internet has been realized.
In such a telephone device, H.264 of the ITU-T standard is used. Call control is performed between telephone devices by exchanging control messages via a data communication network according to a call control protocol such as H.323 or IETF standard SIP (Session Initiaton Protocol).
[0003]
On the other hand, a key telephone device is connected through such a data communication network, and a voice path is formed by exchanging voice data through the data communication network. There is a button telephone system that enables telephone calls.
In such a key telephone system, for example, an extension call between telephones accommodated in each main apparatus, and an extension line for transferring an external line call made by the telephone of one main apparatus to the telephone of the other main apparatus When realizing the in-system function such as transfer, a method of realizing by applying the general call control protocol as described above can be considered.
[0004]
The applicant has not yet found prior art documents related to the present invention by the time of filing other than the prior art documents specified by the prior art document information described in this specification.
[0005]
[Patent Document 1]
JP 2000-151679 A
[0006]
[Problems to be solved by the invention]
In order to implement the in-system function using such a conventional call control protocol, processing information necessary for realizing the in-system function is exchanged between the main devices in addition to general control messages. There is a need.
For example, in an extension call within the system, it is necessary to notify not only the telephone number of the called button telephone apparatus but also the extension number of the called telephone accommodated in the called main apparatus. In addition, in order to clarify the extension source to the called party, it is necessary to notify not only the telephone number of the calling button telephone device but also the extension number of the calling phone accommodated in the calling main device. is there.
[0007]
However, in order to realize a single in-system function by exchanging such a plurality of messages at different timings, for example, it is necessary to strictly manage a transient state until all messages related to the same in-system function arrive. There was a problem that processing became complicated.
The present invention has been made to solve such problems, and an object of the present invention is to provide a button telephone device that can realize the in-system function without complicating the processing.
[0008]
[Means for Solving the Problems]
In order to achieve such an object, a button telephone apparatus according to the present invention comprises a main apparatus that accommodates lines from a telephone network and a data communication network, and one or more telephones that are accommodated in the main apparatus. , Used in a key telephone system having a plurality of key telephone devices for connecting a line and a telephone in the main unit, and performing call control by exchanging control messages between the main units of these key telephone units via a data communication network. And a button telephone device that realizes a call by exchanging voice data, and as a control message to the main device, The message is The message is from a key telephone device belonging to the key telephone system. For confirmation on the main unit of the button telephone device on the receiving side of the message System ID, processing information indicating the content of the processing indicated by the control message, and the main device The data communication network accommodated in Call control means for transmitting a message to which a telephone number indicating the line is added.
[0009]
As a specific example of the control message, when the call control means makes a call to another button telephone device belonging to the button telephone system, at least as processing information, the call is an extension call in the button telephone system. It is also possible to transmit a control message including the function command indicated and the function information indicating the source extension number and destination extension number of the extension call.
[0010]
As another specific example of the control message, when the call control unit transfers a call to another button telephone device belonging to the button telephone system, the transfer is an extension transfer in the button telephone system as at least processing information. A control message may be transmitted that includes a function command indicating this and function information indicating the caller telephone number and destination telephone number of the original call transferred by the extension transfer.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
First, a button telephone apparatus according to an embodiment of the present invention will be described with reference to FIG. FIG. 1 is a block diagram showing the configuration of a button telephone system according to an embodiment of the present invention.
This key telephone system is composed of a plurality of key telephone devices 10A, 10B to 10N. Each of these key telephone devices 10A to 10N accommodates one or more telephones such as a key telephone 2 or an IP telephone terminal 3 and a line from a telephone network 51 such as a public telephone network or an ISDN network, and also has a key telephone 2 or IP It has a main apparatus 1 that accommodates a telephone terminal 3 and exchanges and connects these telephones to the line.
[0012]
The main devices 1 of the key telephone devices 10A to 10N are connected to each other via a data communication network 52 formed of an IP network such as the Internet, and exchange control data via the data communication network 52. The call control is performed by using voice packet technology such as VoIP (Voice over IP) by exchanging voice data, and the line of another button telephone device is used by using the call. Make a call.
[0013]
In the present embodiment, when a control message for realizing an in-system function is exchanged between the main devices 1 of each key telephone device via the data communication network 52, the control message belongs to the key telephone system. Basic information for call control with one control message by adding a system ID indicating that the message is from a button telephone device and processing information indicating the content of the processing indicated by the control message. And processing information necessary for realizing the functions in the system are exchanged at the same time.
[0014]
FIG. 2 shows a configuration example of the button telephone apparatus. The main apparatus 1 is connected to the telephone network 51 via the telephone line 53 and is connected to the data communication network 52 via the communication line 54. The key telephone 2 is accommodated via the extension transmission path 20 and the IP telephone terminal 3 is accommodated via the data communication path 30 such as a LAN.
The main device 1 includes a telephone network connection unit 11, a data communication network connection unit 12, an IP telephone terminal connection unit 13, a key telephone connection unit 14, a switch 15, a data / voice conversion unit 16, a control unit 17, and a storage unit 18. Is provided.
[0015]
The telephone network connection unit 11 is a circuit unit that controls termination of the telephone line 53 from the telephone network 51. The data communication network connection unit 12 is a circuit unit that controls termination of the communication line 54 from the data communication network 52. The IP telephone terminal connection unit 13 is a circuit unit that connects the IP telephone terminal 3 via the data communication path 30. The key telephone connection unit 14 is a circuit unit that connects the key telephone 2 via the extension transmission line 20. The switch 15 is a circuit unit that exchanges and connects the paths of the telephone network connection unit 11, the key telephone connection unit 14, and the data / voice conversion unit 16. The data / voice conversion unit 16 is a circuit unit that mutually converts voice packets on the data communication network connection unit 12 side and voice data on the switch 15 side.
[0016]
The control unit 17 has a computer (hardware resource) including a microprocessor such as a CPU and its peripheral circuits, and is a functional unit that controls each unit of the main device 1 by executing a predetermined program. The control unit 17 is provided with call control means 17A for performing call control with the button telephone apparatus and call control with another button telephone apparatus as functional means. These functional means are realized by cooperating the hardware resource and the program.
The storage unit 18 is a circuit unit that stores a program used for control by the control unit 17 and various control data. In the storage unit 18, a telephone number of each line and a system ID unique to the button telephone system for distinguishing from other button telephone systems are set in advance as control data.
[0017]
The recording medium 19 is a recording medium such as a CD-ROM or a flexible disk, and stores a program for realizing various processes in the control unit 17 including the call control means 17A.
The program recorded in the recording medium 19 is read by the main device 1 and stored in the storage unit 18 as needed during initial operation or maintenance after the installation of the key telephone device, and is stored in the storage unit 18. Realize processing. The program received from the data communication network 52 or the telephone network 51 instead of from the recording medium 19 may be used. In this case, the program is received by the control unit 17 via the data communication network connection unit 12 or the telephone network connection unit 11 and stored in the storage unit 18.
[0018]
When the key telephone 2 makes a call via the telephone network 51, the control unit 17 connects a path between the telephone network connection unit 11 and the key telephone connection unit 14 via the switch 15. A voice signal (voice data) from the telephone network 51 side is converted into voice data by the telephone network connection unit 11 and transmitted to the button telephone 2 via the switch 15, the key telephone connection unit 14 and the extension transmission path 20. The The voice data from the key telephone 2 is input to the telephone network connection 11 via the extension line 20, the key telephone connection 14 and the switch 15, where it is converted into a voice signal (voice data) and converted to the telephone network. 51 is transmitted.
[0019]
On the other hand, when the IP telephone terminal 3 makes a call via the data communication network 52, the path between the data communication network connection unit 12 and the IP telephone terminal connection unit 13 is connected by the control unit 17. Then, the voice packet from the data communication network 52 side is transmitted to the IP telephone terminal 3 through the data communication network connection unit 12, the IP telephone terminal connection unit 13 and the data communication path 30. Voice data from the IP telephone terminal 3 is transmitted to the data communication network 52 side via the data communication path 30, the IP telephone terminal connection unit 13, and the data communication network connection unit 12.
[0020]
When the key telephone 2 makes a call via the data communication network 52, the voice packet from the data communication network 52 side is input to the data / voice conversion unit 16 via the data communication network connection unit 12 to be voice data. Converted to Then, the voice data is transmitted to the key telephone 2 via the switch 15 and the key telephone connecting unit 14. The voice data from the key telephone 2 is input to the data / voice converter 16 via the key telephone connector 14 and the switch 15 and converted into voice packets. Then, the data is transmitted from the data communication network connection unit 12 to the data communication network 52 side.
[0021]
On the other hand, when the IP telephone terminal 3 makes a call via the telephone network 51, a voice signal (voice data) from the telephone network 51 is output as voice data from the telephone network connection unit 11 and passes through the switch 15. Are input to the data / voice converter 16 and converted into voice packets. Then, the voice packet is transmitted to the IP telephone terminal 3 via the IP telephone terminal connection unit 13. Voice packets from the IP telephone terminal 3 are input to the data / voice conversion unit 16 and converted into voice data. And it inputs into the telephone network connection part 11 via the switch 15, and is transmitted to the telephone network 51 side as an audio | voice signal (audio | voice data).
[0022]
Further, when the telephone network 51 and the data communication network 52 are relay-connected, a voice signal (voice data) from the telephone network 51 is output as voice data from the telephone network connection unit 11, via the switch 15. Are input to the data / voice converter 16 and converted into voice packets. Then, the voice packet is transmitted from the data communication network connection unit 12 to the data communication network 52 side. Voice packets from the data communication network 52 side are input to the data / voice conversion unit 16 via the data communication network connection unit 12 and converted into voice data. Then, the voice data is input to the telephone network connection unit 11 via the switch 15 and transmitted to the telephone network 51 side as a voice signal (voice data).
[0023]
FIG. 3 is a block diagram showing the configuration of the IP telephone terminal.
The IP telephone terminal 3 is provided with a data communication unit 31, a voice processing unit 32, a terminal control unit 33, a display unit 34, an operation unit 35, and a storage unit 36.
The data communication unit 31 is a circuit unit that performs packet communication with the main apparatus 1 via the data communication path 30. The voice processing unit 32 is a circuit unit that mutually converts voice packets and voice signals exchanged by the data communication unit 31 and outputs various signal sounds such as ringtones. The terminal control unit 33 includes a microprocessor such as a CPU and its peripheral circuits, and reads a predetermined program to control each unit.
[0024]
The display unit 34 is a circuit unit that displays various types of information using an LCD or LED. The operation unit 35 is a circuit unit that detects user operations using dial keys and various function keys. The storage unit 36 is a circuit unit that stores programs executed by the terminal control unit 33 and various information necessary for the processing.
The key telephone 2 has the same configuration as the IP telephone terminal 3 in FIG. 3 except that it has a data transmission unit that performs extension transmission with the main device 1 instead of the data communication unit 31. Detailed description here is omitted.
[0025]
In the above, the case where the telephone network connection unit 11, the switch 15, the data / voice conversion unit 16, the key telephone connection unit 14, and the key telephone 2 are provided as an example of a configuration for performing a call using the telephone network 51. As described above, when a voice packet call using the data communication network 52 is performed instead of the telephone network 51, each of the above configurations is not essential, and a configuration without these configurations may be used. Further, when making a call using the data communication network 52 with the key telephone 2, the telephone network connection unit 11 may not be provided.
Further, the present invention relates to call control using a line of another button telephone device, and it is sufficient that each button telephone device is provided with one or more telephones, that is, the key telephone 2 or the IP telephone terminal 3.
[0026]
Next, with reference to FIG. 4 and FIG. 5, the operation of the key telephone apparatus according to the present embodiment will be described using an extension transfer operation as an example. FIG. 4 shows a configuration example of the key telephone system. FIG. 5 is a sequence diagram showing an extension transfer operation.
The button telephone system of FIG. 4 includes two button telephone devices 10 A and 10 B, and the main devices 1 A and 1 B are connected via a data communication network 52.
Of the lines accommodated in the main apparatus 1A, the telephone number “3493-xxx0” is assigned to the line from the telephone network 51, and the telephone number “050-tttt” is assigned to the line from the data communication network 52. -xxx1 "is assigned. The extension number “3420” is assigned to the IP telephone terminal 3A accommodated in the main apparatus 1A.
[0027]
On the other hand, a telephone number “050-tttt-xxx2” is given to the line from the data communication network 52 accommodated in the main apparatus 1B, and the telephone terminal 3B accommodated in the main apparatus 1B has an extension. The number “2710” is assigned.
Further, the telephone number “3580-yyyy” is assigned to the line from the telephone network 51 accommodated in the other party telephone 6.
In the following, a case will be described as an example in which IP telephone terminal 3A responds to an incoming call from partner telephone 6 to the line of key telephone apparatus 10A and the extension is transferred to IP telephone terminal 3B of main apparatus 1B.
[0028]
As shown in FIG. 5, in the main apparatus 1A, when there is an incoming call from the counterpart telephone 6 (step 100), the call control means 17B of the control unit 17 detects the incoming call via the telephone network connection unit 11, The IP telephone terminal 3A is controlled from the IP telephone terminal connection unit 13 to display an incoming call (step 101).
In response to this, when a response operation is performed at the IP telephone terminal 3A (step 102), the call control means 17A responds to the incoming call from the other party telephone 6 at the telephone network connection unit 11, and controls the switch 15 to The call path of the partner telephone 6 and the call path of the IP telephone terminal 3A are connected (step 103). Thereby, a call is started between the two (step 104).
[0029]
Thereafter, when an extension call operation is performed on the IP telephone terminal 3A to transfer the call with the partner telephone 6 to the IP telephone terminal 3B of the button telephone apparatus 10B (step 110), the call of the main apparatus 1A is performed. The control means 17A controls the switch 15 to hold the call path of the partner telephone 6 (step 111), and a call setting message at the time of extension call from the data communication network connection unit 12 to the main apparatus 1B via the data communication network 52. Is transmitted (step 112).
FIG. 6 shows a configuration example of the control message (extension call). The control message exchanged between the button telephone devices according to the present embodiment includes basic information 200 including the same content as the control message used in a general call control protocol, and the content of the processing indicated by the control message. It consists of processing information 201 for realizing.
[0030]
The basic information 200 includes a message type 210 indicating the type of call control indicated by the control message, a calling number 211 indicating the telephone number of the originating device of the control message, and the telephone number of the destination device of the control message. A called number 212 is included.
The processing information 201 includes a system ID 220 for identifying the button telephone system of the key telephone system from which the control message is sent, a function command 221 indicating an in-system function indicated by the control message, and the function command. Function information 222 indicating information used in the in-system function designated by 221 is included.
[0031]
In the example of FIG. 6, since it is a control message for instructing an extension call, “call setting” is set in the message type 210, and the telephone number “050” of the line on the data communication network 52 side of the main apparatus 1A is set in the calling number 211. -tttt-xxx1 "is set, and the telephone number" 050-tttt-xxx2 "of the line on the data communication network 52 side of the main apparatus 1B is set as the called number 212.
Further, the ID “001” of the button telephone system is set in the system ID 220, “extension call” is set in the function command 221, and the extension number “3420” of the IP telephone terminal 3 A is set as the caller extension number in the function information 222. ", The extension number" 2710 "of the IP telephone terminal 3B is set as the destination extension number.
[0032]
The control unit 17 of the main apparatus 1B receives the control message from the main apparatus 1A via the data communication network connection unit 12, and the call control means 17A performs an in-system function corresponding to the control message, in this case, an extension. Make a call.
At this time, based on a general call control protocol, the call control means 17A first refers to the basic information 200 of the control message and confirms that there is an incoming call because the message type is “call setting”. The calling party and the called party are confirmed by the calling number 211 and the called number 212.
[0033]
Next, the call control unit 17A compares the system ID with the system ID in the storage unit 18 and confirms that the control message is in the system. Since the function command is “extension call”, the IP telephone terminal 3B corresponding to the destination telephone number “2710” of the function information 222 is called by extension and the incoming call is displayed (step 113). At this time, the source extension number “3420” is notified to the IP telephone terminal 3B and displayed.
[0034]
When a response operation is performed at the IP telephone terminal 3B in response to this incoming call display (step 114), the call control means 17A sends a response message to the extension call from the data communication network connection unit 12 to the data communication network 52. To the main apparatus 1A (step 115).
In response to this response message, the call control means 17A of the main apparatus 1A connects the call paths of the IP telephone terminals 3A and 3B, thereby starting an extension call between them (step 116).
[0035]
When an extension transfer operation is performed at the IP telephone terminal 3A (step 120), the call control means 17A of the main device 1A transfers the extension from the data communication network connection unit 12 to the main device 1B via the data communication network 52. A time information notification message is transmitted (step 121).
FIG. 7 shows a configuration example of the control message (extension transfer). This control message also has basic information 200 and processing information 201 as in the case of the above-described control message at the time of calling an extension.
[0036]
In the example of FIG. 7, since it is a control message for notifying control information at the time of extension transfer, “information notification” is set in the message type 210, and the calling number 211 is the line on the data communication network 52 side of the main apparatus 1A. The telephone number “050-tttt-xxx1” is set, and the telephone number “050-tttt-xxx2” of the line on the data communication network 52 side of the main apparatus 1B is set as the called number 212.
Further, the ID “001” of the button telephone system is set in the system ID 220, “extension transfer” is set in the function command 221, and the other party's telephone is used as the caller telephone number of the original call transferred to the function information 222 6 and the telephone number “3493-xxx0” of the line on the data communication network 52 side of the main apparatus 1A are set as the destination telephone number.
[0037]
The control unit 17 of the main apparatus 1B receives the control message from the main apparatus 1A via the data communication network connection unit 12, and the call control means 17A performs an in-system function corresponding to the control message, in this case, an extension. Perform the transfer. In the case of extension transfer, the transfer destination main device 1B does not change the connection of the call path, displays the caller and callee telephone numbers notified by the control message, and manages the call time and call charge. Will do.
On the other hand, the call control means 17A of the main apparatus 1A controls the switch 15 to connect the held call path of the partner telephone 6 and the call path of the IP telephone terminal 3B of the main apparatus 1B (step 122). . As a result, a call between the two is started (step 123).
[0038]
As described above, when the call control is performed by exchanging the control message via the data communication network between the button telephone devices constituting the key telephone system, the button is used as the control message by the call control means of each main device. Since a message with a system ID indicating that the message is from a key telephone device belonging to the telephone system and processing information indicating the content of the processing indicated by the control message is transmitted, one control message is used. Basic information for call control and processing information necessary for realizing functions in the system can be exchanged at the same time.
Therefore, compared with the prior art in which a plurality of messages are exchanged at different timings to realize one in-system function, for example, a transient state until all messages related to the same in-system function arrive is strictly managed. This eliminates the need for this function and can realize the functions in the system without complicating the processing.
[0039]
In the above description, a case has been described in which each button telephone device shares a communication path (channel) formed by the ISDN telephone line 53 of the telephone network 51 accommodated in each button telephone device as a line. This line is not limited to the communication path formed by the ISDN telephone line 53. For example, in addition to the communication path formed by the analog telephone line, voice packet communication such as VoIP is performed on the communication line 54 of the data communication network 52. The same applies to speech paths that are virtually formed using technology.
[0040]
【The invention's effect】
As described above, the present invention provides a control message in the call control means of each main device. The message is The message is from a key telephone device belonging to the key telephone system. For confirmation on the main unit of the button telephone device on the receiving side of the message System ID, processing information indicating the content of the processing indicated by the control message, and the main device The data communication network accommodated in Since a message with a telephone number indicating the line is transmitted, it is possible to simultaneously exchange basic information for call control and processing information necessary for realizing functions in the system with one control message. it can.
Therefore, compared with the prior art in which a plurality of messages are exchanged at different timings to realize one in-system function, for example, a transient state until all messages related to the same in-system function arrive is strictly managed. This eliminates the need for this function and can realize the functions in the system without complicating the processing.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a key telephone system to which a key telephone device according to an embodiment of the present invention is applied.
FIG. 2 is a block diagram showing a configuration of a key telephone apparatus according to an embodiment of the present invention.
FIG. 3 is a block diagram showing a configuration of an IP telephone terminal.
FIG. 4 is a configuration example of a button telephone system.
FIG. 5 is a sequence diagram showing an extension transfer operation.
FIG. 6 is a configuration example of a control message (when an extension is called).
FIG. 7 is a configuration example of a control message (during extension transfer).
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10A, 10B, ..., 10N ... Button telephone apparatus, 1, 1A, 1B ... Main apparatus, 11 ... Telephone network connection part, 12 ... Data communication network connection part, 13 ... IP telephone terminal connection part, 14 ... Button telephone connection part DESCRIPTION OF SYMBOLS 15 ... Switch, 16 ... Data / voice conversion part, 17 ... Control part, 17A ... Call control means, 18 ... Memory | storage part, 18 ... Recording medium (program), 2 ... Key telephone, 20 ... Extension transmission line, 30 ... Data communication path, 3 ... IP telephone terminal, 31 ... data communication unit, 32 ... voice processing unit, 33 ... terminal control unit, 34 ... display unit, 35 ... operation unit, 36 ... storage unit, 51 ... telephone network, 52 ... Data communication network, 53 ... telephone line, 54 ... communication line, 6 ... partner telephone, 200 ... basic information, 201 ... processing information, 210 ... message type, 211 ... calling number, 212 ... called number, 220 ... system ID, 221 …function Command, 222 ... function information.

Claims (3)

A plurality of button telephone devices each comprising a main device accommodating a line from a telephone network and a data communication network and one or more telephones accommodated in the main device, and connecting the line and the telephone by the main device. A button that is used in a button telephone system that has a function of performing call control by exchanging control messages between the main units of these button telephone apparatuses via the data communication network, and realizing voice communication by exchanging voice data. A telephone device,
Said main apparatus, as the control message, and a system ID to check the main apparatus on the receiving side key telephone system of the message that the message is a message from the key telephone system belonging to the key telephone system, the Call control means for transmitting a message to which processing information indicating the content of processing instructed by a control message and a telephone number indicating a line of the data communication network accommodated in the main apparatus are transmitted. Button telephone device. The button telephone apparatus according to claim 1, wherein
The call control means, when making a call to another button telephone device belonging to the button telephone system, at least as the processing information, a function command indicating that the call is an extension call in the button telephone system; A button telephone apparatus characterized by transmitting the control message including function information indicating a source extension number and a destination extension number of the extension call. The button telephone apparatus according to claim 1, wherein
The call control means, when transferring a call to another button telephone device belonging to the button telephone system, at least as the processing information, a function command indicating that the transfer is an extension transfer in the button telephone system; A button telephone apparatus characterized by transmitting the control message including function information indicating a source telephone number and a destination telephone number of an original call transferred by the extension transfer.

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