JP6826492B2 - Communications system - Google Patents

Description

The present invention relates to a communication system that performs incoming call transfer processing.

The following Patent Document 1 describes an IP-POI (IP Point Of Interconnect) which is an interconnection point using SIP (Session Initiation Protocol) and an STM-POI which is an interconnection point using an existing ISUP (ISDN User Part). (STM (Synchronous TransferMode) -POI) and is described to connect the network. Then, it is described that either IP-POI or STM-POI is selected for communication connection.

Japanese Unexamined Patent Publication No. 2012-253575

By the way, it is conceivable that the network of a telecommunications carrier that provides an incoming call transfer service receives an incoming call request from a communication terminal of another carrier that enables VoLTE communication, and transfers the incoming call to another carrier. Be done. Generally, even if the communication terminal to be the call transfer destination is a communication terminal that enables VoLTE communication, the network of the call transfer service is constructed so that the transfer process is performed via STM-POI. Has been done. This is because the transfer for the incoming call request from the communication terminal or the fixed telephone that does not support VoLTE communication is not allowed via the IP-POI, so that the transfer process is uniformly performed via the STM-POI. It has been done.

Therefore, in such a configuration, there is a problem that the call transfer service cannot provide the service by VoLTE communication.

Therefore, an object of the present invention is to provide a communication system that performs call transfer that enables communication by a predetermined communication method in the call transfer service.

In order to solve the above-mentioned problems, a receiving means for receiving an incoming call request to a predetermined destination and information indicating the predetermined communication method are added to the incoming call request when the transfer setting is made to the predetermined destination. When it is determined that the determination means for determining whether or not the communication is performed and the information indicating the predetermined communication method are given, the incoming call request is transferred from the interface that enables communication by the predetermined communication method. In a communication system including a call processing device including a transfer control means for controlling the call processing device, and a communication control device for controlling communication call-controlled by the call processing device, the communication control device is the said. When it is determined that the signal is from an interface that enables communication by a predetermined communication method based on the network identifier given to the incoming call request, the information indicating the predetermined communication method is added to the incoming call request. A granting means for granting is provided.

According to the present invention, an incoming call request received via an interface that enables communication by a predetermined communication method can be transferred via an interface that enables communication by a predetermined communication method when the incoming call is transferred. As a result, it is possible to make a communication connection between the calling side and the receiving side (forwarding destination) via an interface that enables communication by a predetermined communication method, and it is possible to realize a call by a predetermined communication method.

According to the present invention, when a call is transferred, a call can be realized between the calling terminal and the called terminal (transfer destination terminal) by a predetermined communication method.

It is a figure which shows the system configuration of the communication system 10 including S-CSCF100 which is a call processing apparatus of this embodiment. It is a figure which shows the functional structure of S-CSCF100 and AS200. It is a sequence diagram which shows the process in communication system 10 | communication system 30. It is a flowchart which shows the process of AS200. It is a flowchart which shows the process of S-CSCF100. It is a hardware block diagram of S-CSCF100 and AS200.

An embodiment of the present invention will be described with reference to the accompanying drawings. When possible, the same parts are designated by the same reference numerals and duplicate description is omitted.

FIG. 1 is a diagram showing a system configuration of a communication system 10 including the S-CSCF 100 which is the call processing device of the present embodiment. As shown in FIG. 1, the communication system 10 is a system constituting a communication network, and the communication network includes the communication system 10, the communication system 20, and the communication system 30. In the present embodiment, the communication system 20 is a system including a communication terminal 20a which is a transmission terminal. The communication system 10 is a system that performs call transfer processing. The communication system 30 is a system including a communication terminal 30a which is a callee terminal to which an incoming call is transferred.

The communication system 10 includes a communication terminal 10a, an IBCF (Interconnection Border Control Function) 10b, an MGW (Media Gateway) 10c, a P-CSCF (Proxy-Call Session Control Function) 10d, an S-CSCF (Serving-Call Session Control Function) 100, and It includes an AS (Application server) 200 and an HLR / HSS (Home Location Register / Home Subscriber Server) 300.

The communication system 20 includes a communication terminal 20a, an IBCF 20b, and an MGW 20c. The communication system 30 includes a communication terminal 30a, an IBCF30b, and an MGW30c.

Transmission processing from the communication terminal 20a that performs SIP communication such as VoLTE When performing communication processing, the communication system 20 transmits an INVITE signal to the communication system 10 using the IBCF 20b and IP-POI.

In the communication system 10, the IBCF 10b receives the INVITE signal and transmits it to the S-CSCF 100. The S-CSCF100 performs inquiry processing on AS200 and HLR / HSS300, and acquires the necessity of transfer processing and its destination. At that time, the AS200 can determine that the INVITE signal has been received via the IP-POI based on the network identifier of the INVITE signal. Although the network identifier contains information indicating that the signal was received via IP-POI, the INVITE signal is via IP-POI because it is rewritten to information indicating communication system 10 when performing transfer processing. A new parameter indicating that the signal was received in is added separately. Then, the AS200 includes the incoming call transfer destination in the INVITE signal to which the new parameter is added, and transmits the signal to the S-CSCF100.

Then, when the S-CSCF 100 determines that the incoming call transfer is necessary and the INVITE signal from the communication system 20 is via the I-POI based on the new parameter, the communication system 30 via the IBCF 10b (IP-POI). INVITE signal is transmitted to.

As a result, the communication systems 10 to 30 can be communicated and connected via the IP-POI. Therefore, the calling side terminal and the receiving side terminal (transfer destination terminal) are connected via IP-POI, and it is possible to make a call by SIP communication such as VoLTE.

FIG. 2 is a diagram showing a functional configuration of S-CSCF100 and AS200. As shown in FIG. 2, the S-CSCF 100 includes a communication unit 101 (reception means), a POI determination unit 102 (determination means), and a signal determination / processing unit 103 (transfer control means). The AS200 is a communication control device, and includes a communication unit 201, a signal determination / processing unit 202 (giving means), and a parameter information holding unit 203. Hereinafter, each configuration requirement will be described.

The communication unit 101 is a portion that communicates and connects with the IBCF 10b, MGW 10c, P-CSCF 10d, and AS 200. The communication unit 101 receives the INVITE signal from the IBCF 10b and transmits the INVITE signal to the AS200. Further, the communication unit 101 receives the INVITE signal to which the new parameter is added from the AS200, and then transmits the INVITE signal to the IBCF10b or the MGW10c.

The POI determination unit 102 is a part that performs an inquiry process to the AS200 via the communication unit 101 and confirms a new parameter assigned to the INVITE signal in the AS200.

The signal determination / processing unit 103 is a portion that determines the transfer destination operator based on the transfer destination number (telephone number) as a result of inquiring to the AS200. The signal determination / processing unit 103 can determine the transfer destination operator by using the transfer destination number system and the management table.

As a result of the determination in this way, the communication unit 101 transmits the INVITE signal toward the IBCF 10b, and the IBCF 10b transmits the INVITE signal to the communication system 30 via the IP-POI.

Next, the AS200 will be described. The communication unit 201 is a part that receives an inquiry for an INVITE signal from the S-CSCF 100 and returns to the inquiry.

When the signal determination / processing unit 202 receives the INVITE signal from the communication unit 201, the signal determination / processing unit 202 is a unit that determines whether or not the signal is via IP-POI based on the network identifier set in the INVITE signal. Then, when the signal determination / processing unit 202 determines that the INVITE signal is via IP-POI based on the network identifier, the signal determination / processing unit 202 sets a new parameter indicating that the INVITE signal is an INVITE signal received via IP-POI. Give to the signal. The communication unit 201 transmits the INVITE signal to which the new parameter is added to the S-CSCF 100.

The parameter information holding unit 203 is a part that holds new parameters and normal parameters. As described above, the new parameter is a parameter indicating that the INVITE signal has been received via the IP-POI, and the normal parameter is a parameter for providing various additional services.

Next, the processing of each system in the network including the communication system 10 to the communication system 30 will be described. FIG. 3 is a sequence diagram showing processing in communication systems 10 to 30.

First, the transmitting side NW, the IBCF 20b, transmits the INVITE signal to the communication system 10 (S101).

The transfer source IBCF10b sets the network identifier of the received INVITE signal with information that the signal is via IP-POI (S102). Then, the IBCF 10b transmits an INVITE signal in which the information is set to the S-CSCF 100. In the S-CSCF 100, the communication unit 101 transmits an INVITE signal in order to perform an inquiry process to the AS 200 (S103).

Upon receiving the INVITE signal in the AS200, the communication unit 201 inquires the HLR / HSS 300 of the presence / absence of the transfer setting and the transfer destination number based on the destination of the INVITE signal (S104). Then, in the AS200, the signal determination / processing unit 202 determines whether or not the signal is via IP-POI based on the network identifier set in the INVITE signal, and sets a new parameter according to the determination result into the INVITE signal. Grant (S105). The communication unit 201 transmits an INVITE signal including a new parameter and a transfer destination number to the S-CSCF 100 (S106). After adding a new parameter, the AS200 performs a process of rewriting the network identifier to an identifier indicating the transfer source NW. This process is a process that is generally performed when performing a transfer process.

In the S-CSCF 100, when the communication unit 101 receives the INVITE signal to which the new parameter is added, the signal determination / processing unit 103 determines the transfer destination operator based on the transfer destination number of the INVITE signal. Further, the signal determination / processing unit 103 determines whether or not the transfer destination operator provides a call service by SIP such as VoLTE (S107). Then, when the INVITE signal is an incoming call transfer call, the POI determination unit 102 confirms whether a new parameter is added to the INVITE signal (S108).

When the INVITE signal is an incoming call transfer call and the new parameter is indicated to be via IP-POI, the communication unit 101 transmits the INVITE signal to the IBCF 10b (S109).

The IBCF 10b transmits an INVITE signal to the communication system 30 via the IP-POI (S110).

In this way, a communication path is established between the communication system 10 and the communication system 30 via the IP-POI. Therefore, it is possible to realize a high-quality call by SIP such as VoLTE.

In step S108, when the POI determination unit 102 does not add a new parameter to the INVITE signal transmitted from the AS200 and the INVITE signal is an incoming call transfer call, the communication unit 101 sends the INVITE signal to the MGW 10c. To send. Then, the MGW 10c transmits an INVITE signal to the communication system 30 via the STM-POI.

According to this process, the INVITE signal can be transmitted or switched from either the IP-POI or the STM-POI, and the communication path can be established by an appropriate communication path. In the present embodiment, the IP-POI is an interface for call processing by packet switching such as SIP communication, and the STM-POI is an interface for call processing by circuit switching.

Next, the processing of AS200 of this embodiment will be described. FIG. 4 is a flowchart showing the processing of AS200, and shows the processing of S105 in FIG. 3 in detail.

In the AS200, when the communication unit 201 receives the INVITE signal from the S-CSCF100 (S201), it determines whether or not the signal is via the IP-POI by referring to the network identifier (S202). Then, when the signal determination / processing unit 202 determines that the signal is via the IP-POI, a new parameter indicating that the INVITE signal is the IP-POI is added (S203).

Further, when the signal determination / processing unit 202 determines that the signal is not via IP-POI, a normal parameter is added to the INVITE signal (S20). This normal parameter is a parameter given to provide a general additional service, and is not necessarily added.

In the AS200, after assigning each parameter, a process of rewriting the network identifier to the information indicating the communication system 10 (own network) is performed.

In this way, the AS200 is an INVITE signal via IP-POI in S-CSCF100 even if the network identifier is rewritten by adding a new parameter to the INVITE signal that can pass through IP-POI. Can be determined.

Next, the processing of S-CSCF100 will be described. FIG. 5 is a flowchart showing the processing of S-CSCF100, and shows the detailed processing of S107-S108 in FIG.

In the S-CSCF 100, when the communication unit 101 receives the INVITE signal from the IBCF 10b (S300), the signal determination / processing unit 103 determines whether the transfer destination is another company's network or its own network (S301). The signal determination / processing unit 103 can determine whether the transfer destination is the company's own network or the other company's network according to the transfer destination number system or the telephone number list of the other company's network stored in advance. If it is determined that the network is owned by the company, the signal determination / processing unit 103 performs connection processing within the company network as a normal operation (S303).

Then, when it is determined that the transfer destination is another company's network, the signal determination / processing unit 103 determines whether or not the transfer destination is another company's network that provides a SIP-based call service such as VoLTE (S302). The signal determination / processing unit 103 has a management table for whether the network of another company provides communication services such as VoLTE, and determines whether the transfer destination provides communication services such as VoLTE based on the table. can do. Here, if it is determined that the network is not a network of another company that provides communication services such as VoLTE, communication connection processing is performed via STM-POI, which is a normal operation (S303).

Further, when the signal determination / processing unit 103 determines that the network is a network of another company that provides communication services such as VoLTE, it determines whether or not a new parameter indicating that the INVITE signal is via IP-POI is added. (S304).

Here, if the signal determination / processing unit 103 determines that a new parameter has not been added to the INVITE signal, the signal determination / processing unit 103 transmits the INVITE signal via the STM-POI (S305).

When the signal determination / processing unit 103 determines that a new parameter is added to the INVITE signal, the signal determination / processing unit 103 transmits the INVITE signal via the IP-POI (S306).

As described above, the S-CSCF 100 can transmit the INVITE signal via the IP-POI by determining whether or not a new parameter is added to the INVITE signal. Therefore, it is possible to make a communication connection via IP-POI, and it is possible to make a communication connection between the source and the called side via IP-POI. Therefore, it enables high-quality calls by SIP such as VoLTE.

Next, the effects of the S-CSCF 100 of the present embodiment and the communication system 10 including the S-CSCF 100 will be described.

In the S-CSCF 100, when the communication unit 101 receives an incoming call request to a predetermined destination, an INVITE signal is transmitted to the AS 200. The AS200 performs inquiry processing as to whether or not transfer processing is necessary. After that, the signal determination / processing unit 103 sets the transfer of the INVITE signal returned from the AS200 to the predetermined destination, and further adds a new parameter which is information indicating a predetermined communication method (for example, VoLTE). Determine if it has been granted.

When the signal determination / processing unit 103 determines that a new parameter has been added, the signal determination / processing unit 103 controls the communication unit 101 to transfer the INVITE signal from the IP-POI that enables communication by SIP such as VoLTE.

According to this configuration, the S-CSCF 100 can transfer the INVITE signal received via the IP-POI via the IP-POI. As a result, a communication connection can be made between the calling side and the receiving side (transfer destination) via IP-POI, and a high-quality sound call can be realized by a predetermined communication method such as VoLTE.

Further, the signal determination / processing unit 103 further determines whether or not the transfer-set destination is the destination of another operator that provides the VoLTE service, and the communication unit 101 transmits the INVITE signal to the VoLTE signal. It can be transferred from the IP-POI that enables the service.

Therefore, when another operator provides the VoLTE service, it is possible to appropriately switch to the STM-POI by performing the transfer process via the IP-POI. That is, even if the service is transferred by IP-POI to a business operator that does not provide VoLTE, the VoLTE service cannot be provided, so that it is possible to prevent wasteful use of resources.

The block diagram used in the description of the above embodiment shows a block of functional units. These functional blocks (components) are realized by any combination of hardware and / or software. Further, the means for realizing each functional block is not particularly limited. That is, each functional block may be realized by one physically and / or logically coupled device, or directly and / or indirectly by two or more physically and / or logically separated devices. (For example, wired and / or wireless) may be connected and realized by these plurality of devices.

For example, the S-CSCF100, AS200, etc. in one embodiment of the present invention may function as a computer that performs the processing of the present embodiment. FIG. 6 is a diagram showing an example of the hardware configuration of the S-CSCF100 and AS200 according to the present embodiment. The S-CSCF 100 and AS 200 described above may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.

In the following description, the word "device" can be read as a circuit, device, unit, or the like. The hardware configuration of the S-CSCF 100 and AS 200 may be configured to include one or more of the devices shown in the figure, or may be configured not to include some of the devices.

For each function in the S-CSCF100 and AS200, by loading predetermined software (program) on the hardware such as the processor 1001 and the memory 1002, the processor 1001 performs an operation, and the communication device 1004 communicates with the memory 1002 and the memory 1002. It is realized by controlling the reading and / or writing of data in the storage 1003.

Processor 1001 operates, for example, an operating system to control the entire computer. The processor 1001 may be composed of a central processing unit (CPU) including an interface with a peripheral device, a control device, an arithmetic unit, a register, and the like. For example, the signal determination / processing units 103, 202 and the like may be realized by the processor 1001.

Further, the processor 1001 reads a program (program code), a software module, and data from the storage 1003 and / or the communication device 1004 into the memory 1002, and executes various processes according to these. As the program, a program that causes a computer to execute at least a part of the operations described in the above-described embodiment is used. For example, the signal determination / processing units 103 and 202 of the S-CSCF100 and AS200 may be realized by a control program stored in the memory 1002 and operated by the processor 1001, and may be realized in the same manner for other functional blocks. May be done. Although it has been described that the various processes described above are executed by one processor 1001, they may be executed simultaneously or sequentially by two or more processors 1001. Processor 1001 may be mounted on one or more chips. The program may be transmitted from the network via a telecommunication line.

The memory 1002 is a computer-readable recording medium, and is composed of at least one such as a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), an EEPROM (Electrically Erasable Programmable ROM), and a RAM (Random Access Memory). May be done. The memory 1002 may be referred to as a register, a cache, a main memory (main storage device), or the like. The memory 1002 can store a program (program code), a software module, or the like that can be executed to carry out the wireless communication method according to the embodiment of the present invention.

The storage 1003 is a computer-readable recording medium, and is, for example, an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, an optical magnetic disk (for example, a compact disk, a digital versatile disk, or a Blu-ray). It may consist of at least one (registered trademark) disk), smart card, flash memory (eg, card, stick, key drive), floppy (registered trademark) disk, magnetic strip, and the like. The storage 1003 may be referred to as an auxiliary storage device. The storage medium described above may be, for example, a database, server or other suitable medium containing memory 1002 and / or storage 1003.

The communication device 1004 is hardware (transmission / reception device) for performing communication between computers via a wired and / or wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, or the like. For example, the above-mentioned communication unit 101, communication unit 201, and the like may be realized by the communication device 1004.

The input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives an input from the outside. The output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that outputs to the outside. The input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).

Further, each device such as the processor 1001 and the memory 1002 is connected by a bus 1007 for communicating information. The bus 1007 may be composed of a single bus or may be composed of different buses between the devices.

Further, the S-CSCF100 and AS200 use hardware such as a microprocessor, a digital signal processor (DSP: Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), and an FPGA (Field Programmable Gate Array). It may be configured to include, and a part or all of each functional block may be realized by the hardware. For example, processor 1001 may be implemented on at least one of these hardware.

Although the present embodiment has been described in detail above, it is clear to those skilled in the art that the present embodiment is not limited to the embodiment described in the present specification. This embodiment can be implemented as a modified or modified mode without departing from the spirit and scope of the present invention determined by the description of the claims. Therefore, the description of the present specification is for the purpose of exemplification and does not have any limiting meaning to the present embodiment.

The notification of information is not limited to the embodiments / embodiments described herein, and may be made by other methods. For example, information notification includes physical layer signaling (for example, DCI (Downlink Control Information), UCI (Uplink Control Information)), upper layer signaling (for example, RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, etc. It may be carried out by notification information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof. Further, the RRC signaling may be referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.

Each aspect / embodiment described herein includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G, 5G, FRA (Future Radio Access), W-CDMA. (Registered Trademarks), GSM (Registered Trademarks), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, UWB (Ultra-WideBand), It may be applied to Bluetooth®, other systems that utilize suitable systems and / or next-generation systems that are extended based on them.

The order of the processing procedures, sequences, flowcharts, and the like of each aspect / embodiment described in the present specification may be changed as long as there is no contradiction. For example, the methods described herein present elements of various steps in an exemplary order, and are not limited to the particular order presented.

Information and the like can be output from the upper layer (or lower layer) to the lower layer (or upper layer). Input / output may be performed via a plurality of network nodes.

The input / output information and the like may be stored in a specific location (for example, a memory), or may be managed by a management table. Input / output information and the like can be overwritten, updated, or added. The output information and the like may be deleted. The input information or the like may be transmitted to another device.

The determination may be made by a value represented by 1 bit (0 or 1), by a boolean value (Boolean: true or false), or by comparing numerical values (for example, a predetermined value). It may be done by comparison with the value).

Each aspect / embodiment described in the present specification may be used alone, in combination, or may be switched and used according to the execution. Further, the notification of predetermined information (for example, the notification of "being X") is not limited to the explicit one, but is performed implicitly (for example, the notification of the predetermined information is not performed). May be good.

Software is an instruction, instruction set, code, code segment, program code, program, subprogram, software module, whether called software, firmware, middleware, microcode, hardware description language, or another name. , Applications, software applications, software packages, routines, subroutines, objects, executables, execution threads, procedures, features, etc. should be broadly interpreted.

Further, software, instructions, and the like may be transmitted and received via a transmission medium. For example, the software uses wired technology such as coaxial cable, fiber optic cable, twist pair and digital subscriber line (DSL) and / or wireless technology such as infrared, wireless and microwave to websites, servers, or other When transmitted from a remote source, these wired and / or wireless technologies are included within the definition of transmission medium.

The information, signals, etc. described herein may be represented using any of a variety of different techniques. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description are voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may be represented by a combination of.

In addition, the terms described in the present specification and / or the terms necessary for understanding the present specification may be replaced with terms having the same or similar meanings.

The terms "system" and "network" as used herein are used interchangeably.

Further, the information, parameters, etc. described in the present specification may be represented by an absolute value, a relative value from a predetermined value, or another corresponding information. ..

The names used for the above parameters are not limited in any way. Further, mathematical formulas and the like using these parameters may differ from those expressly disclosed herein. Since the various channels (eg, PUCCH, PDCCH, etc.) and information elements (eg, TPC, etc.) can be identified by any suitable name, the various names assigned to these various channels and information elements are in any respect. However, it is not limited.

As used herein, the terms "determining" and "determining" may include a wide variety of actions. "Judgment", "decision" is, for example, calculating, computing, processing, deriving, investigating, looking up (eg, table, database or another). It may include (searching in the data structure) and confirming (ascertaining) as "judgment" and "decision". In addition, "judgment" and "decision" are receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), and access. (Accessing) (for example, accessing data in memory) may be regarded as "judgment" or "decision". In addition, "judgment" and "decision" mean that "resolving", "selecting", "choosing", "establishing", "comparing", etc. are regarded as "judgment" and "decision". Can include. That is, "judgment" and "decision" may include that some action is regarded as "judgment" and "decision".

The terms "connected", "coupled", or any variation thereof, mean any direct or indirect connection or connection between two or more elements, and each other. It can include the presence of one or more intermediate elements between two "connected" or "combined" elements. The connection or connection between the elements may be physical, logical, or a combination thereof. As used herein, the two elements are by using one or more wires, cables and / or printed electrical connections, and, as some non-limiting and non-comprehensive examples, radio frequencies. It can be considered to be "connected" or "coupled" to each other by using electromagnetic energies such as electromagnetic energies having wavelengths in the region, microwave region and light (both visible and invisible) regions.

As used herein, the phrase "based on" does not mean "based on" unless otherwise stated. In other words, the statement "based on" means both "based only" and "at least based on".

When the terms "first", "second", etc. are used herein, any reference to the elements does not generally limit the quantity or order of those elements. These designations can be used herein as a convenient way to distinguish between two or more elements. Thus, references to the first and second elements do not mean that only two elements can be adopted there, or that the first element must somehow precede the second element.

As long as "include", "including", and variations thereof are used within the scope of this specification or claims, these terms are similar to the term "comprising". Is intended to be inclusive. Furthermore, the term "or" as used herein or in the claims is intended not to be an exclusive OR.

In the present specification, a plurality of devices shall be included unless the device has only one device apparently in the context or technically.

In the whole of the present disclosure, if the context clearly does not indicate the singular, it shall include more than one.

101 ... communication unit, 102 ... POI determination unit, 103 ... signal determination / processing unit, 201 ... communication unit, 202 ... signal determination / processing unit, 203 ... parameter information holding unit.

Claims (2)

A receiving means for receiving an incoming call request to a predetermined destination, and
When the transfer setting is made for the predetermined destination, the determination means for determining whether or not the incoming call request is provided with the information indicating the predetermined communication method, and
When it is determined that the information indicating the predetermined communication method is given, the transfer control means that controls the transfer of the incoming call request from the interface that enables the communication by the predetermined communication method, and the transfer control means.
In a communication system including a call processing device including the above, and a communication control device that controls communication that is call-controlled by the call processing device.
The communication control device is
When it is determined that the signal is from an interface that enables communication by a predetermined communication method based on the network identifier given to the incoming call request, the information indicating the predetermined communication method is input to the incoming call request. Equipped with a granting means to grant to
Communications system. The judgment means is
Further, it is determined whether or not the transfer setting destination is the destination of another business operator that provides the predetermined communication method.
The transfer control means
If it is determined that the a predetermined destination of other operators providing the communication method, the incoming request, performs control to transfer from the interface to enable communication by the predetermined communication method, according to claim The communication system according to 1.

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