JP2011083039A - Communication system, and server device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To attain an additional service such as holding or transfer even in any inter-terminal communication. <P>SOLUTION: According to embodiments, a server device includes a storage, a receiving module, a holding service executing module, and an additional service execution controller. The storage stores a management table wherein a terminal ID specifying a communication terminal is made corresponding to a communication protocol supported by the communication terminal. The receiving module receives information transmitted from a communication terminal that becomes a holding operation source. The holding service executing module refers to the management table based on terminal IDs of the communication terminal of the holding operation source and a communication terminal of a communication partner side, and starts a holding service, that the server device has, based on a result of the reference. When information for starting an additional service is received from the communication terminal of the holding operation source while the holding service is executed, the additional service execution controller starts the additional service. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  Embodiments of the present invention include a communication system that performs voice communication between a plurality of communication terminals connected to an IP network and between a communication terminal and a public network, such as an IP (Internet Protocol) telephone system, and the communication The present invention relates to a server device used in the system.

  2. Description of the Related Art In recent years, network telephone systems (IP telephone systems) that transmit and receive images and sounds as packet data in both directions via a packet network have begun to spread. In this IP telephone system, it is possible not only to perform inter-line communication and outgoing / incoming calls for each communication server connected to the IP network, but also to perform extension communication and outgoing / incoming calls between communication servers via the IP network. Can do. In this IP telephone system, SIP (Session Initiation Protocol) is widely used as the protocol.

  Even in this type of system, there is a strong demand for additional outgoing / incoming services such as transfer, conference call, etc., which are implemented by, for example, PBX (Private Branch Exchange) or a button telephone device. In the IP telephone system, the additional service can be executed by the terminal side.

  In the IP telephone system, a method has been proposed in which the additional service can be executed between terminals via a plurality of IP networks having different IP address systems (for example, Patent Document 1).

JP 2006-135522 A

  By the way, the IP telephone system handles packet data of various communication protocols in addition to communication between terminals via a plurality of IP networks. In this case, a plurality of terminals in which a plurality of communication protocols are mixed are accommodated in the communication server via the IP network. However, additional services such as transfer between terminals with different communication protocols are still under investigation and are not defined in the standard.

  In the IP telephone system, when a terminal is purchased and used, a user generally selects a terminal having a service function necessary at that time. For this reason, when the additional service is executed between terminals, the additional service may not be executed unless one terminal has the additional service function.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a communication system and a server device that can realize additional services such as hold and transfer in any communication between terminals.

  According to the embodiment, the communication system includes a plurality of communication terminals to which terminal IDs are assigned and a server device. The plurality of communication terminals include transmission means for transmitting information for requesting the server device to hold when a hold operation is performed in a state where communication is performed with the communication terminal on the other side. . The server device includes storage means, reception means, hold service execution means, and additional service execution control means. The storage means stores a management table in which the terminal ID is associated with the communication protocol supported by the communication terminal. The receiving unit receives information transmitted from the communication terminal serving as the hold operation source. The hold service execution means analyzes the information received by the receiving means, and when the analyzed information is information for requesting the hold, the hold operation source communication terminal and the communication partner side communication included in the information Based on the terminal ID of each terminal, the management table is referred to, and based on the reference result, the hold service of the server device is activated. The supplementary service execution control means activates the supplementary service when receiving information for activating the supplementary service different from the suspension service from the suspension operation source communication terminal in a state where the suspension service is being executed.

  As described above in detail, according to the present invention, it is possible to provide a communication system and a server apparatus that can realize additional services such as hold and transfer for any communication between terminals.

BRIEF DESCRIPTION OF THE DRAWINGS The schematic block diagram which shows the communication system of 1st Embodiment of this invention. The block diagram which shows the function structure of the communication server shown in FIG. The figure which shows an example of the memory content of the terminal information database shown in FIG. The sequence diagram which shows the operation | movement for performing Consultation Hold control and transfer control between the communication server and terminal in the said 1st Embodiment. The figure which shows an example of the format of the INVITE message used in the said 1st Embodiment. The sequence diagram which shows the operation | movement for performing Consultation Hold control and conference control as 2nd Embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(First embodiment)
FIG. 1 is a schematic configuration diagram showing a communication system according to the first embodiment of the present invention.
This system has an Internet INW as an IP network and a LAN (Local Area Network) 1. A plurality of terminals T11 to T1i are connected to the LAN1. A terminal T21 is connected to the Internet INW. Terminals T11 to T1i (i is a natural number) and T21 are IP telephone terminals having a call processing function and a media information processing function, or a soft phone realized by software on a personal computer.

  Further, a communication server SV is connected to the LAN 1. The communication server SV connects the LAN 1 and the public network PNW, and has an exchange control function for the terminals T11 to T1i and T21 and the public network PNW. An external telephone terminal TT1 is connected to the public network PNW.

  By the way, the communication server SV has the following functions as functions related to the first embodiment. FIG. 2 is a block diagram showing the configuration.

  That is, the communication server SV includes a LAN interface unit 11, a central processing control unit 12, a signal transmission / reception processing unit 13, a terminal information management unit 14, a terminal information database 15, and a network interface unit 16. Among these, the LAN interface unit 11 performs interface processing with the LAN 1.

  The central processing control unit 12 includes a CPU, a ROM, a RAM, and the like, and controls each unit of the communication server SV by software processing.

  The signal transmission / reception processing unit 13 generates and analyzes signals according to the communication protocols for the terminals T11 to T1i and T21 managed by the terminal information management unit 14, and transmits the processing results to the central processing control unit 12. To do.

  The terminal information management unit 14 manages the terminal information database 15 and accesses the terminal information database 15 in order to analyze a signal from the LAN 1 and transmits necessary information such as a protocol type to the signal transmission / reception processing unit 13.

  As shown in FIG. 3, the terminal information database 15 stores data representing the correspondence between terminal identifiers (terminal IDs) assigned to the terminals T11 to T1i and T21, IP addresses, and usable protocol types. Is done.

  The network interface unit 16 performs interface processing with the public network PNW.

  By the way, the central processing control unit 12 has an additional service execution control function according to the present invention. The additional service execution control function is used during communication between the terminals T11 to T1i and T21 and between the terminals T11 to T1i and T21 and the telephone terminal TT1 on the public network PNW. In accordance with the requested operations of T11 to T1i and T21, Consultation Hold control, transfer control, conference control, outgoing control by special number, and the like are executed.

  Next, the operation of the communication system configured as described above will be described. FIG. 4 is a sequence diagram showing an operation for executing Consultation Hold control and transfer control.

  For example, it is assumed that voice communication is performed between the terminal T11 (terminal identifier: 3000) and the terminal T12 (terminal identifier: 3001).

  In this state, it is assumed that the user performs an operation for requesting the hold from the terminal at the terminal T11. Then, the request signal (INVITE message) is sent from the terminal T11 to the communication server SV. When receiving this request signal, the communication server SV refers to the terminal information database 15 based on the IP addresses of the terminals T11 and T12 included in the request signal, and determines the protocol of the request signal. For example, when the protocol of the terminal T11 is SIP and the parameter of a = sendly or c = 0.0.0.0 in the SDP parameter shown in FIG. H. If it is H.323, the facility remoteHoldInvokeADPU signal is judged as a hold operation. These determinations are made according to the protocol. When the hold operation is notified, the conventional hold service of the communication server SV is started instead of the hold of the conventional terminal itself, and the hold is started while the communication link with the terminal T12 in communication is held. A response is returned to the terminal T11.

  Subsequently, it is assumed that the user of the terminal T11 performs an operation for requesting transfer of communication from the terminal to the terminal T21. Then, a REFER message is sent from the terminal T11 to the communication server SV.

  On the other hand, when receiving the REFER message, the communication server SV refers to the terminal information database 15 and determines whether or not the REFER message is a parameter indicating transfer. If a parameter indicating transfer is included, it is determined as transfer and the communication transfer service function is activated.

  Then, the communication server SV calls the transfer destination terminal T21, and when the terminal T21 responds, connects the terminal T11 and the terminal T21. In this state, when the user of the terminal T11 performs a disconnection operation (on-hook), the terminal T12 and the terminal T21 are connected and the communication link with the terminal T11 is disconnected.

  Thus, the communication partner of the terminal T12 is switched from the terminal T11 to the terminal T21, and thereafter, the user of the terminal T12 can continue to perform voice communication with the user of the terminal T21.

  As described above, in the first embodiment, when an operation for starting Consultation Hold and communication transfer is performed during communication with the terminal T12 at the terminal T11, the Consultation Hold and communication transfer are started. The information is transmitted from the terminal T11 to the communication server SV, and the communication server SV executes the requested Consultation Hold and communication transfer using the received information.

  Therefore, since the Consultation Hold and the communication transfer in the terminals T11 and T12 are mapped to the Consultation Hold and the communication transfer that the communication server SV has, one of the terminals T11 and T12 can start the Consultation Hold and the communication transfer. Even if it is not provided or the communication protocol is different, additional services such as Consultation Hold and transfer can be realized.

  In the first embodiment, the communication server SV uses the information on the protocols of the terminals T11 to T1i and T21 stored and managed in the terminal information database 15 to determine whether or not the requested additional service can be executed. Therefore, appropriate additional service execution processing can be performed with a simple procedure.

(Second Embodiment)
FIG. 6 is a sequence diagram showing operations for executing Consultation Hold control and conference control as the second embodiment of the present invention.

  For example, it is assumed that voice communication is performed between the terminal T11 and the terminal T12.

  In this state, it is assumed that the user performs an operation for requesting the hold from the terminal at the terminal T11. Then, the request signal is sent from the terminal T11 to the communication server SV. Upon receiving this request signal, the communication server SV refers to the terminal information database 15 and determines the protocol of the request signal. For example, when the protocol of the terminal T11 is SIP and the parameter of a = sendly or c = 0.0.0.0 in the SDP parameter is included, it is determined as a hold operation. Then, the communication server SV activates the Consultation Hold service, and returns a hold activation response to the terminal T11 while keeping the communication link with the terminal T12 in communication on hold.

  Subsequently, it is assumed that the user of the terminal T11 performs an operation of adding the terminal T21 to the conference call from the own terminal. Then, the request signal is sent from the terminal T11 to the communication server SV.

  On the other hand, when receiving the request signal, the communication server SV refers to the terminal information database 15 and determines whether or not the SDP parameter is a parameter representing a conference. If a parameter representing a conference is included, the conference is determined to be a conference and the conference service function is activated.

  Then, the communication server SV calls the terminal T21 while maintaining the communication link between the terminal T11 and the terminal T12. When the user of the terminal T21 responds to this call, the terminal T21 transmits a response signal to the communication server SV.

  Thus, the terminal T21 can be added to the conference call between the terminals T11 and T12.

  As described above, in the second embodiment, when an operation for starting Consultation Hold and the conference function is performed during communication with the terminal T12 at the terminal T11, the Consultation Hold and the conference function are started. Information is transmitted from the terminal T11 to the communication server SV, and the communication server SV executes the requested Consultation Hold and conference function using the received information.

  Therefore, since the Consultation Hold and the conference function in the terminals T11 and T12 are mapped to the Consultation Hold and the conference function of the communication server SV, one of the terminals T11 and T12 starts the Consultation Hold and the conference function. Even if it does not have, Consultation Hold, conference service can be realized.

(Other embodiments)
The present invention is not limited to the above embodiments. For example, in each of the embodiments described above, the case where Consultation Hold control, communication transfer control, and conference control are executed in response to a request operation from the terminal has been described as an example. In some cases, it is also possible to execute a special number calling function.

  In addition, the system configuration, communication server functional configuration, terminal type, content stored in the terminal information database, Consultation Hold control, communication transfer control, conference control, special number transmission control, and the procedure and the contents thereof are also included in the present invention. Various modifications can be made without departing from the scope of the invention.

  DESCRIPTION OF SYMBOLS 1 ... LAN, 11 ... LAN interface part, 12 ... Central processing control part, 13 ... Signal transmission / reception processing part, 14 ... Terminal information management part, 15 ... Terminal information database, 16 ... Network interface part, SV ... Communication server, T11- T1i, T21 ... terminal, TT1 ... external telephone terminal, INW ... Internet, PNW ... public network.

Claims (9)

In a communication system that executes communication connection between a plurality of communication terminals to which terminal IDs are assigned in a server device,
The plurality of communication terminals are:
A transmission means for transmitting information for requesting the server device to hold when a hold operation is performed in a state where communication is performed with a communication terminal on the other side;
The server device
Storage means for storing a management table in which the terminal ID is associated with a communication protocol supported by the communication terminal;
A receiving means for receiving information transmitted from a communication terminal as a holding operation source;
When the information received by the receiving means is analyzed, and the analyzed information is information for requesting the hold, each of the hold operation source communication terminal and the communication partner side communication terminal included in the information Based on the terminal ID, the management table is referenced, and based on the reference result, the pending service execution means for starting the pending service of the server device;
An additional service execution control means for starting the additional service when receiving information for starting the additional service different from the hold service from the hold operation source communication terminal in a state where the hold service is being executed; A communication system comprising: The transmission means performs a hold operation at the first communication terminal among the first and second communication terminals in communication and receives a start response of the hold service from the server device. When a transfer operation to the terminal is performed, information for requesting transfer from the first communication terminal to the server device is transmitted,
When the analyzed information is information for requesting the transfer, the additional service execution control means activates a transfer service included in the server device and sets a communication partner of the second communication terminal as the first communication partner. The communication system according to claim 1, wherein the communication terminal is switched to the third communication terminal. The transmission means performs a hold operation at the first communication terminal among the first and second communication terminals in communication and receives a start response of the hold service from the server device. When a conference operation for adding a terminal to communication is performed, information for requesting a conference is transmitted from the first communication terminal to the server device,
When the analyzed information is information for requesting the conference, the additional service execution control unit activates a conference service included in the server device, and the first communication terminal and the second communication terminal The communication system according to claim 1, wherein the third communication terminal is conference-connected.   The said additional service execution control means performs the said special number transmission function, when the special number transmission operation is performed in either one of the some communication terminals in the hold after starting the said pending | holding service. Communication system.   The communication system according to claim 1, wherein the plurality of communication terminals are IP terminals having a function of starting the additional service. In a server device that executes communication connection between a plurality of communication terminals to which terminal IDs are assigned,
Storage means for storing a management table in which the terminal ID is associated with a communication protocol supported by the communication terminal;
A receiving means for receiving information transmitted from a communication terminal as a holding operation source;
When the information received by the receiving means is analyzed, and the analyzed information is information for requesting the hold, each of the hold operation source communication terminal and the communication partner side communication terminal included in the information Based on the terminal ID, the management table is referenced, and based on the reference result, the pending service execution means for starting the pending service of the server device;
An additional service execution control means for starting the additional service when receiving information for starting the additional service different from the hold service from the hold operation source communication terminal in a state where the hold service is being executed; A server device comprising:   When the analyzed information is information for requesting transfer for switching communication partners, the additional service execution control means activates the transfer service of the server device and determines the communication partner of the communication terminal that is on hold. The server device according to claim 6, wherein the communication terminal that is the hold operation source is switched to another communication terminal. The transmission means performs a hold operation at the first communication terminal among the first and second communication terminals in communication and receives a start response of the hold service from the server device. When a conference operation for adding a terminal to communication is performed, information for requesting a conference is transmitted from the first communication terminal to the server device,
The additional service execution control means activates and holds the conference service of the server device when the analyzed information is information for requesting a conference connecting the communication terminal on hold and another communication terminal. The server device according to claim 6, wherein the operation source communication terminal, the pending communication terminal, and another communication terminal are connected by conference.   The said additional service execution control means performs the said special number transmission function, when the special number transmission operation is made in any one of the some communication terminals in the hold after starting the said pending | holding service. Server device.

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