JP3984819B2 - Button phone system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a key telephone system, and more particularly to a key telephone system incorporating a VoIP function.
[0002]
[Prior art]
With the widespread use of the Internet, not only mere information retrieval and electronic mail but also applications such as transmission of voice, facsimile and video (image) information have been performed. VoIP (Voice over IP), which is an IP (Internet Protocol) telephone that transmits voice information in real time via the Internet by an existing button telephone system, is being put into practical use.
[0003]
Prior arts related to or related to a button telephone system and an IP telephone are disclosed in, for example, Japanese Patent Application Laid-Open No. 2000-307724, “Key phone device, electronic mail system using the same, and mail arrival notification and transfer method thereof”, Japanese Patent Application Laid-Open No. 2001-111598. “Multimedia communication system” in Japanese Patent Application Laid-Open No. 2001-111698, “Communication system” in Japanese Patent Application Laid-Open No. 2001-111698, “button telephone apparatus” in Japanese Patent Application Laid-Open No. 2001-119638, and “Connect to Internet network” in Japanese Patent Application Laid-Open No. 2001-177557. A possible telephone communication apparatus, main telephone control apparatus, and IP address management method "and Japanese Patent Application Laid-Open No. 2001-217929" Telephone transmission control apparatus and incoming call control apparatus ".
[0004]
[Problems to be solved by the invention]
In these conventional key telephone devices and PBX (Private Electronic Exchange) systems, when establishing an intersystem connection based on a dedicated line, there is a mechanism such as calling to which department in the same system for each physical line. It was done. However, when this dedicated line is IP-connected, there is no image of a physical line or channel, and in order to use the same concept, it is necessary to assign a different IP address for each department. In addition, a DNS (Domain Name Server) can be constructed to communicate with a unique name, or an internal IP address can be converted with a unique protocol using the NAT (Network Address Translator) function to convert a private address to a global address using an IP address. There is a need to interact. In particular, considering the operation from the key telephone, inputting a unique name is very inoperable when considering the conventional operation, and there is a problem that the exchange based on the conventional telephone number is indispensable.
[0005]
OBJECT OF THE INVENTION
The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to provide a button telephone system that can assign one IP address to a call to the same system.
[0006]
[Means for Solving the Problems]
The key telephone system of the present invention is a key telephone system in which the key telephone devices set for each department in which the key telephones are accommodated as extensions are connected via a LAN, A telephone dial analysis unit, a call control execution unit, a line control unit, and an IP protocol control unit, the telephone dial analysis unit analyzes button press information from the button telephone, and in the case of call control of the telephone, Call control information is output to the call control execution unit, the call control execution unit receives the call control information, outputs a call control request to the line control unit of the corresponding free line, and the line control unit When the line is a VoIP trunk, a line control request (dial information) is output to the IP protocol control unit, and the IP protocol control unit registers in advance. The called party number and the IP address correspondence table are used to enter the called party number dialed into the called party number and send out an IP packet (IP protocol). The receiving side button telephone device includes an IP protocol control unit, a line control unit, A call control execution unit and a telephone control unit, the IP protocol control unit receives an IP packet, determines an individual extension call process or an external line reception process from the received called number, and in the case of an external line reception process The corresponding trunk number is obtained and the line control information is output to the line control unit. The line control unit instructs the telephone control unit to receive the corresponding trunk via the call control execution unit. (Call control request), and the telephone control unit makes an incoming call only to the key telephones of each corresponding department, in which the corresponding trunk is set in advance for each department. Do.
Here, in the IP protocol control unit, whether it is an extension individual call process or an external line reception process is determined by taking out the called number and determining whether the number of the called number is less than 7 digits. Individual call processing, and if it is 7 digits or more, it is external line reception acceptance processing .
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the configuration and operation of a preferred embodiment of a key telephone system according to the present invention will be described in detail with reference to the accompanying drawings.
[0010]
First, FIG. 1 is an overall configuration diagram of a button telephone system according to the present invention. Button telephone devices A and B are connected to LANs (Local Area Networks) 200 and 210, respectively, and are further connected to each other via routers 201 and 211 and an IP network 300, respectively. A plurality of key telephones 101 are connected to the key telephone devices 100 and 110, respectively. Further, gatekeepers 202 and 212 are connected to the LANs 200 and 210, respectively.
[0011]
Here, each key telephone 101 is a telephone connected as an extension of the key telephone device 100 or 110. Each button phone 101 is set as data of a telephone of a department (for example, sales department, development department, accounting department, etc.), has a separate telephone number (representative number) for each department, and receives a call for each department. It is possible. As described above, the key telephone devices 100 and 110 are connected from the respective LANs 200 and 210 via the routers 201 and 211 and the IP network.
[0012]
Next, FIG. 2 is a block diagram showing the configuration of the first embodiment of the key telephone system according to the present invention. Each of the key telephone devices 100 and 110 includes a telephone dial analysis unit 102, a call control execution unit 103, a line control unit 104, and an IP protocol control unit 106. The telephone dial analysis unit 102 is connected to the key telephone 101. The IP protocol control unit 106 is connected to the corresponding LANs 200 and 210, respectively.
[0013]
Explaining the operation, the telephone dial analysis unit 102 analyzes the button press information from the key telephone 101 connected to the caller button telephone apparatus 100. In the case of telephone call control, call control information B is output to the call control execution unit 103. The call control execution unit 103 outputs a call control request C to the line control unit 104 of the corresponding free line.
[0014]
On the other hand, if the line is a VoIP trunk, a line control request (dial information) E is output to the IP protocol control unit 106. The IP protocol control unit 106 sends out an IP packet (IP protocol) F based on a correspondence table of destination numbers registered in advance and IP addresses. In that case, the dialed number is entered as the called number. In the receiving side button telephone apparatus 110, the IP protocol control unit 106 receives the IP packet G, and as shown in FIG. 3, the extension individual call processing or the outside call reception processing is determined from the number of the called number. That is, first, a called number is taken out (step S1). Next, it is determined whether the number of the called number is less than 7 digits (step S2). If it is less than 7 digits, the extension individual call processing is performed (step S3). On the other hand, if the number is 7 digits or more, external line incoming call reception processing is performed (step S4).
[0015]
In the case of the outside line incoming call reception process described above (step S4), the corresponding trunk number is obtained and the line control information I is output to the line control unit 104. The line control unit 104 requests the telephone control unit 107 via the call control execution unit 103 for a corresponding trunk incoming instruction (call control request K). In the telephone control unit 107, since the corresponding trunk is set in advance so as to be distinguished for each department, it is possible to receive only the key telephone 101 of the relevant department.
[0016]
Next, the operation of the first embodiment of the key telephone system according to the present invention will be described with reference to FIG. Prior to the operation, the IP protocol control unit 106 of the outgoing side button telephone apparatus 100 has a correspondence table of telephone numbers and IP addresses, and the IP protocol control unit 106 of the incoming side button telephone apparatus 110 has a trunk for each telephone number and department. Assume that a number correspondence table is registered in advance.
[0017]
The telephone dial analysis unit 102 analyzes the button press information A from the key telephone 101 connected to the calling side key telephone apparatus 100. In the case of telephone call control, call control information B is output to the call control execution unit 103. The call control execution unit 103 outputs a call control request C to the corresponding free line control unit 104. On the other hand, if the line is a VoIP trunk, a line control request (dial information) E is output to the IP protocol control unit 106. The IP protocol control unit 106 sends out an IP packet (IP protocol) F based on a correspondence table of destination numbers registered in advance and IP addresses. In that case, the dialed number is entered as the called number.
[0018]
In the button telephone apparatus 110, the IP protocol control unit 106 receives an IP packet (IP protocol) G. Based on the received called number, as shown in the flowchart of FIG. 3, the extension individual calling process (step S3) or the outside line incoming call receiving process (step S4) is determined from the number of called number digits.
[0019]
In the case of an outside line incoming call reception process (step S 4), the corresponding trunk number is obtained and the line control information I is output to the line control unit 104. The line control unit 104 requests an incoming call instruction (call control request) K for the corresponding trunk from the telephone control unit 107 via the call control execution unit 103. In the telephone control unit 107, since the corresponding trunk is set in advance so as to be distinguished for each department, it is possible to receive only the telephone of the relevant department.
[0020]
Next, a second embodiment of the button telephone system according to the present invention will be described with reference to FIG. The calling-side button telephone apparatus 100 is the same as the calling-side button telephone apparatus 100 of the first embodiment described above, and is therefore omitted. The IP protocol control unit 106 of the incoming-side button telephone apparatus 110 ′ determines an individual extension incoming call from the received IP protocol G called number and the number of digits, and outputs line control information I to the line control unit 104. The line control unit 104 instructs the telephone control unit 107 to receive an incoming call via the call control execution unit 103, and the telephone control unit 107 displays the incoming call only on the designated telephone.
[0021]
The configuration and operation of the preferred embodiment of the button telephone system according to the present invention have been described in detail above. However, such an embodiment is merely an example of the present invention and does not limit the present invention. Those skilled in the art will readily understand that various modifications and changes can be made according to a specific application without departing from the gist of the present invention.
[0022]
【The invention's effect】
As can be understood from the above description, according to the button telephone system of the present invention, the following remarkable practical effects can be obtained. That is, there is a problem of the conventional system that a call to the same system can be set to any number of types with only one IP address assignment, and a plurality of IP addresses must be assigned to the same system. It can be solved.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram of a button telephone system according to the present invention.
FIG. 2 is a block diagram showing a configuration of a first embodiment of a button telephone system according to the present invention;
FIG. 3 is a flowchart for discriminating extension individual call processing or outside line reception processing from the number of called number digits.
FIG. 4 is a block diagram showing a configuration of a second embodiment of a button telephone system according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 100 Originating side telephone apparatus 101 Button telephone 102 Telephone dial analysis part 103 Call control execution part 104 Line control part 106 IP protocol control part 107 Telephone control part 110 Receiving side key telephone apparatus 201, 211 Router 300 IP network

Claims (2)

A key telephone system in which key telephone devices set for each department in which key telephones are accommodated as extensions are connected via a LAN,
The calling-side button telephone device includes a telephone dial analysis unit, a call control execution unit, a line control unit, and an IP protocol control unit,
The telephone dial analysis unit analyzes button press information from the key telephone, and in the case of telephone call control, outputs call control information to the call control execution unit,
The call control execution unit receives the call control information, and outputs a call control request to the line control unit of the corresponding free line,
When the line is a VoIP trunk, the line control unit outputs a line control request (dial information) to the IP protocol control unit,
The IP protocol control unit puts the called party number dialed into the called number according to the correspondence table of the called party number and IP address registered in advance, and sends out an IP packet (IP protocol).
The receiver side telephone device includes an IP protocol control unit, a line control unit, a call control execution unit, a telephone control unit,
The IP protocol control unit receives an IP packet, determines an extension individual call process or an external line incoming reception process from the received called number,
In the case of outside line incoming reception processing, the corresponding trunk number is obtained, and line control information is output to the line control unit,
The line control unit requests an incoming call instruction (call control request) of the corresponding trunk from the telephone control unit via the call control execution unit,
The telephone control system is characterized in that the telephone trunk is set in advance so that the corresponding trunk is classified for each department, and only the key telephone for each relevant department is called. In the IP protocol control unit, whether the extension individual call processing or the external line reception acceptance processing is taken out is determined by taking out the called number and determining whether the number of the called number digits is less than 7 digits. The button telephone system according to claim 1, wherein if the number is 7 digits or more, an outside line incoming call reception process is performed .

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