JP2004228616A - Call establishment on intranet and external network through dmz - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To establish a call between an intranet terminal and an external network terminal through a DMZ. <P>SOLUTION: An information processor 110 in a DMZ is connectable to a separate apparatus 120 connectable to an intranet and an external network. The processor comprises a first means constituted to establish first links 640, 642 with the separate apparatus in response to a signal received from the external network and transmit the signal over the first links established, based a non-internet protocol, to establish a call with the separate apparatus; and a second means for establishing second links 640, 642 for data communications with the separate apparatus on the established call to transmit or receive data, based on the non-internet protocol. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to communication between an intranet and an external network, and more particularly, to establishing a call between the intranet having a firewall and the external network.
[0002]
BACKGROUND OF THE INVENTION
Telephony between two personal computers (PCs) over a local area network (LAN) is known. Also known is VoIP (Voice over IP) communication that provides Internet telephone communication between two PCs via the Internet.
[0003]
In response to a connection request from the Internet, a server in a DMZ (DeMilitarized Zone) sends a connection request to a terminal on an intranet through a firewall, according to INTEC Web and Genome Informatics Co., Ltd. and Genome Informatics Corporation), "H323ProxyServer", [searched October 23, 2002] Internet <URL: http: www. noc. intec. co. jp / products / H323Proxy / >> (Non-Patent Document 1). However, if such a server permits access to a terminal on the intranet, a malicious user may illegally access a device on the intranet.
[Non-patent document 1]
Document "H323ProxyServer" of INTEC Web and Information Informatics Co., Ltd., [Searched on October 23, 2002] Internet <URL: http: www3. noc. intec. co. jp / products / H323Proxy / >>
[0004]
There is a need for realizing VoIP communication between a terminal connected to an intranet having a firewall and a terminal connected to the Internet. However, it is not known how to realize VoIP communication between such two terminals while effectively functioning a firewall necessary for security.
[0005]
The inventors have recognized that in a DMZ between the intranet and the Internet, VoIP communication can be realized between the intranet terminal and the Internet terminal by terminating the call and associating both calls with each other. did.
[0006]
One object of the present invention is to realize the establishment of a call between a terminal connected to an intranet and a terminal connected to an external network.
[0007]
Another object of the present invention is to realize multimedia communication between a terminal connected to an intranet and a terminal connected to an external network.
[0008]
Yet another object of the present invention is to realize in a secure manner the establishment of a call between a terminal connected to an intranet and a terminal connected to an external network.
[0009]
Summary of the Invention
According to one feature of the present invention, an information processing device in the DMZ is connectable to an external network and another device connectable to an intranet. The information processing device establishes a first link with the other device in response to a signal received from the external network, and on the established first link based on a non-Internet protocol. A first means configured to send a signal at the second device to establish a call with the other device, and a second device for data communication between the another device over the established call. Second means for establishing a second link to send or receive data based on a non-Internet protocol.
[0010]
According to another feature of the invention, the information processing device in the DMZ is connectable to an external network and another device connectable to an intranet. The information processing device establishes a connection on the external network, and establishes a link between the means for transmitting or receiving data on the established connection based on the Internet protocol and the other device. , Means for transmitting or receiving data over the established link based on a non-Internet protocol.
[0011]
According to yet another feature of the invention, the information processing device is connectable to another device in the DMZ and an intranet. The information processing device establishes a link with the other device in response to a signal received from the intranet and transmits a signal on the established first link based on a non-Internet protocol. And establishing a first means for establishing a call with the other device and a second link for data communication between the another device and the other device on the established call. Second means for establishing and transmitting or receiving data based on a non-Internet protocol.
[0012]
According to yet another feature of the invention, the information processing device is connectable to another device in the DMZ and an intranet. The information processing device establishes a connection on the intranet, establishes a link between the means for transmitting or receiving data on the established connection based on an Internet protocol, and the other device, Means for transmitting or receiving data over the established link based on a non-Internet protocol.
[0013]
According to yet another feature of the invention, a program (which may be stored on a storage medium) is used for an information processing device in a DMZ connectable to an external network and another device connectable to an intranet. Can be The program, in response to a signal received from the external network, establishes a first link with the other device, and on the established first link based on a non-Internet protocol. Sending a signal to establish a call with the other device, and establishing a second link for data communication with the other device on the established call. And transmitting or receiving data based on the non-Internet protocol over the established second link.
[0014]
According to yet another feature of the invention, a program (which may be stored on a storage medium) is used for an information processing device in a DMZ connectable to an external network and another device connectable to an intranet. Can be The program establishes a connection over the external network, establishes a link with the other device, and sends or receives data over the established connection based on an Internet protocol. Operable to perform the steps of: transmitting and receiving data over the established link based on a non-Internet protocol.
[0015]
According to yet another aspect of the present invention, a program (which may be stored on a storage medium) is used in an information processing device connectable to another device in the DMZ and an intranet. The program, in response to a signal received from the intranet, establishes a link with the other device, and sends the signal over the established first link based on a non-Internet protocol. Establishing a call with the other device; establishing a second link for data communication with the other device on the established call; Transmitting or receiving data based on a non-Internet protocol over the second link provided.
[0016]
According to yet another aspect of the present invention, a program (which may be stored on a storage medium) is used in an information processing device connectable to another device in the DMZ and an intranet. The program establishes a connection on the intranet, establishes a link with the other device, and sends or receives data on the established connection based on an Internet protocol. And transmitting or receiving data over the established link based on a non-Internet protocol.
[0017]
According to yet another aspect of the present invention, a communication method in a DMZ connectable to an intranet and an external network comprises a first link between the intranet and the external device in response to a signal received from the external network. Establishing a call with the other device by sending a signal over the established first link based on a non-Internet protocol; and establishing a call with the other device. Establishing a second link for data communication with the another device above, and transmitting or receiving data over the established second link based on a non-Internet protocol; Includes
[0018]
According to still another feature of the present invention, a communication method in an information processing device connectable to another device in a DMZ and an intranet includes a method for communicating with another device in response to a signal received from the intranet. Establishing a link, sending a signal over the established first link based on a non-Internet protocol to establish a call with the other device, and establishing the established call Establishing a second link for data communication with the other device over the network, and transmitting or receiving data over the established second link based on a non-Internet protocol; , Including.
[0019]
ADVANTAGE OF THE INVENTION According to this invention, the establishment of a call and the multimedia communication between the terminal connected to the intranet and the terminal connected to the external network can be realized, while ensuring the security of the intranet.
[0020]
In the drawings, like reference numbers indicate like or similar elements.
[0021]
[0022]
Preferred Embodiment of the Invention
FIG. 1 shows a system configuration including an intranet 140 connected to servers and terminals and an external network 40 connected to external terminals according to the present invention. The intranet 140 is a local area network (LAN) in the call center 10. External network 40 is typically the Internet, and may include ISDN, PSTN, ADSL or cable television networks and the like.
[0023]
In the call center 10, a firewall (FW) 80 is connected between the DMZ 100 and the external network 40. The intranet 140 is connected to an external network via a multimedia communication (MM.C.) relay server 120, a multimedia communication (MM.C.) server 110 in the DMZ 100, a hub 83 on a communication line, and a firewall (FW) 80. 40. MM. C. Relay server 120 and MM. C. The server 110 may use the cable 640 according to the non-IP (non-Internet protocol) based on the USB standard or the IEEE 1394 standard, or based on the wireless LAN standard such as the Bluetooth standard or the IEEE 802.11 standard. They communicate with each other using RF signals 642 according to non-IP.
[0024]
To the intranet 140, a call control device 150, a plurality of terminals 162 to 166, and a customer database 170 for authentication and the like are connected. Customer database 170 is referenced by server 110 and by an operator or agent on terminals 162 to 166 during a call with a customer. A plurality of terminals 240 and 250 on the premises are connected to the external network 40 via a NAT (Network Address Translation) router 210, and a single terminal 270 is connected to the external network 40.
[0025]
The firewall 80 in FIG. 1 filters connection requests received via the external network 40 in accordance with the filtering rules, and filters MM. C. The connection to the server 110 is permitted, and a connection request that does not conform to the rule is rejected. Firewall 80 further includes intranet 140, MM. C. Relay server 120 and MM. C. The packet received via the server 110 is filtered according to a predetermined filtering rule, only the packet conforming to the rule is passed to the external network 40, and the packet not conforming to the rule is discarded.
[0026]
FIG. 2 shows another system configuration including an intranet 140 and an external network 40 according to the present invention. In this figure, in the call center 10, the intranet 140 and the external network 40 communicate with each other via the communication path according to the non-IP as shown in FIG. C. Relay server 120 and MM. C. They are connected to each other via a server 110, and connected to the other servers 130 to 131 in the DMZ 100 via communication lines according to the IP in a usual manner. In the call center 10, a firewall (FW) 80 is connected between the DMZ 100 and the external network 40, and another firewall 85 is connected between the DMZ 100 and the intranet 140.
[0027]
Other servers 130 to 131 are connected to a hub 82 on a communication line in the DMZ 100 between the firewalls 80 and 85. MM. C. A relay server 120 is connected to the intranet 140.
[0028]
MM. C. An L3 switch 81 is provided between the firewall 80 and the hub 83 to which the server 110 is connected and the hub 82 to which the other servers 130 to 131 are connected. The switch 81 is connected to the MM. C. The connection is switched between the server 110 and the other servers 130 to 131. The switch 81 supplies a normal packet from the external terminal 240 or 270 to the other servers 130 to 131, and transmits a packet from the external terminal 240 or 270 to a device other than the other servers 130 to 131 to the MM. C. It operates to supply to the server 110. The switch 81 is connected to the MM. C. Packets from the server 110 and the other servers 130 to 131 to an external device on the external network 40 are sent to the external network 40.
[0029]
FIG. C. 2 shows a configuration of a server 110. MM. C. The server 110 includes a processor 1110 and a storage device 1112, is physically connected to the hub 83 via a network interface (NW I / F) according to IP, and further includes a non-IP interface (non-IP I / F). Via MM. C. Connected to relay server 120. The storage device 1112 stores a program for handling (processing) signaling communication and multimedia communication, and thereby coupling a call or connection via the intranet 140 with a call or connection via the external network 40. I have. According to the program, the processing generator 112 is mounted (implemented) on the processor 1110, and the processing generator 112 serves as a signaling communication (SIG.C.) component 1141, 1142,. , And 1144, and multimedia communication (MM.C.) components 1161, 1162,... And 1164 each having the same configuration as the multimedia communication unit 116. The management component 118 is further mounted on the processor 1110 according to the program. Therefore, the ports of that component described below are virtual.
[0030]
SIG. C. The components 1141 to 1144 conform to the standard H.264 standard for extended VoIP recommended by the ITU-T over TCP created by the IETF (Internet Engineering Task Force). 323 or SIP (Session Initiation Protocol) to handle signaling communication with the external network terminals 240 to 270, and MM. C. Handles signaling communication with the relay server 120. SIG. C. The components 1141 to 1144 conform to the H.264 standard of the IP standard. It converts between H.323-based signaling protocols and non-IP standard signaling protocols used for cable 640 or RF signal 642.
[0031]
MM. C. The components 1161 to 1164 are connected to external network terminals 240 to 270 based on a standard protocol RTP (Real Time Protocol) / RTCP (Real Time Control Protocol) specified in RFC1889 on TCP or UDP (User Datagram Protocol). MM. C. It handles multimedia communications with the relay server 120 for audio, video and / or text, etc. MM. C. The components 1161 to 1164 perform conversion between the IP standard RTP / RTCP and the non-IP standard multimedia communication protocol.
[0032]
FIG. 4 shows the MM. C. The MM. C. 2 shows a configuration of a relay server 120. MM. C. The relay server 120 includes a processor 1210 and a storage device 1212, is physically connected to the intranet 140 via a network interface (NW I / F), and further includes a non-IP interface (non-IP I / F). Via MM. C. Connected to server 110. The storage device 1212 stores a program for appropriately relaying the signaling communication and the multimedia communication. A processing generator 122 is mounted on the processor 1210 according to the program, and the processing generator 122 serves as a signaling communication relay unit 124 and signaling communication (SIG.C.) relay components 1241, 1242,. And 1244 as well as multimedia communication (MM.C.) relay components 1261, 1262,... And 1264 having the same configuration as the multimedia communication relay unit 126.
[0033]
SIG. C. The relay components 1241-1244 conform to the standard H.264 standard used by the terminals 162-166 on the intranet 140. 323 and MM. C. H. used by the server 110 It converts between H.323-based signaling protocols and further converts between the IP standard and the non-IP standard used for cable 640 or RF signal 642.
[0034]
MM. C. The relay components 1261-1264 include the multimedia communication protocol RTP / RTCP over UDP used by the terminals 162-166 on the intranet 140, and the MM. C. It performs conversion between the multimedia communication protocol RTP / RTCP over UDP implemented on the TCP used by the server 110, and further converts the multimedia communication protocol of the IP standard and the non-standard communication protocol used for the cable 640 or the RF signal 642. Converts between IP standard multimedia communication protocols.
[0035]
Referring to FIG. C. The SIG. C. The component 1141 includes an IP-non-IP signaling protocol conversion unit 11409, a protocol check (determination) unit 11410, a receiver / transmitter unit 11412 connected to the terminals 240 to 270 via the network 40, and FIG. MM. C. The corresponding SIG. C. It includes a transmitter / receiver section 11414 connected to the receiver / transmitter section (12412) of the relay component 1241, and a connection management information transmitting / receiving section 11418. The receiver / transmitter unit 11412, the protocol check unit 11410, the IP-non-IP signaling protocol conversion unit 11409, and the transmitter / receiver unit 11414 are cascaded. The IP-non-IP protocol conversion unit 11409 performs conversion between an IP signaling protocol for the external network 40 and a non-IP standard signaling protocol for the cable 640 or the RF signal 642. The protocol check unit 11410 checks a TCP connection request and a signaling message according to a predetermined communication protocol, and sends a connection response or a connection request in response to the check.
[0036]
MM. C. Similarly, the component 1161 includes an IP-non-IP multimedia communication protocol converter 11609, a protocol checker 11610, a receiver / transmitter 11612 connected to the terminals 240 to 270 via the network 40, and FIG. MM. C. The corresponding MM. C. It includes a transmitter / receiver section 11614 connected to the receiver / transmitter section (12612) of the relay component 1261 and a connection management information transmitting / receiving section 11618. The receiver / transmitter unit 11612, the protocol check unit 11610, the IP-non-IP multimedia communication protocol conversion unit 11609, and the transmitter / receiver unit 11614 are cascaded. The IP-non-IP protocol converter 11609 performs conversion between an IP standard multimedia communication protocol for the external network 40 and a non-IP standard multimedia communication protocol for the cable 640 or the RF signal 642. The protocol check unit 11610 checks the TCP connection request and the received packet of the multimedia data stream according to a predetermined protocol, sends a connection response in response to the packet, passes a conforming packet, and discards a nonconforming packet. Or
[0037]
Referring to FIG. C. The SIG. C. The relay component 1241 includes a protocol conversion unit 12410 and the MM. C. The corresponding SIG. C. A receiver / transmitter section 12412 connected to the transmitter / receiver section 11414 of the component 1141, a transmitter / receiver section 12414 connected to the terminals 162 to 166 via the intranet 140, and a connection management information transmitting / receiving section 12418. The receiver / transmitter section 12412, the protocol conversion section 12410, and the transmitter / receiver section 12414 are cascaded. Protocol conversion section 12410 performs MM. C. The protocol conversion between the server 110 and the intranet 140 is performed, and the conversion between the IP standard signaling protocol for the external network 40 and the non-IP standard signaling protocol for the cable 640 or the RF signal 642 is performed.
[0038]
MM. C. Similarly, the relay component 1261 includes the protocol conversion unit 12610 and the MM. C. The corresponding MM. C. A receiver / transmitter unit 12612 connected to the transmitter / receiver unit 11614 of the component 1161, a transmitter / receiver unit 12614 connected to the terminals 162 to 166 via the intranet 140, and a connection management information transmitting / receiving unit 12618. The receiver / transmitter unit 12612, the protocol conversion unit 12610, and the transmitter / receiver unit 12614 are cascaded. The protocol conversion unit 12610 converts the connection request and the received packet of the multimedia data stream into the MM. C. It performs protocol conversion between the server 110 and the intranet 140, and further converts between an IP standard multimedia communication protocol for the external network 40 and a non-IP standard multimedia communication protocol for the cable 640 or the RF signal 642. .
[0039]
The management component 118 includes the MM. C. Server 110 and MM. C. Manages calls in relay server 120. The management component 118 stores management information, such as logical numbers of links in each session, for calls and multimedia communications handled by the other components 1141-1144, 1161-1164, 1241-1244 and 1261-1264. It is stored in its database 1182 and supplies management information to those components on demand.
[0040]
The management component 118 is connected to one of the MM. C. The SIG. C. Component 1141 of the connection management information transmitting / receiving section 11418 and the MM. C. The communication with the connection management information transmission / reception unit 11618 of the component 1161 and the SIG. C. Component 1141 and the MM. C. The correspondence relationship with the component 1161 is controlled.
[0041]
The management component 118 transmits, for example, the MM. C. The SIG. C. Relay management component transmission / reception unit 12418 of MM. C. It communicates with the connection management information transmission / reception unit 12618 of the relay component 1261 and refers to the database 1182 to obtain the SIG. C. Relay component 1241 and MM. C. It controls the correspondence with the relay component 1261.
[0042]
The management component 118 communicates with the connection management information transmission / reception units 11418, 11618, 12418, and 12618, so that the MM. C. The SIG. C. Each of the components 1141 to 1144 is assigned to the MM. C. The SIG. C. Relay components 1241 through 1244, and the MM. C. The MM. C. Each of the components 1161-1164 is referred to as an MM. C. The MM. C. Associated with each of the relay components 1261-1264.
[0043]
The call control device 150 includes the MM. C. The SIG. C. A call is established between one of components 1141-1144 and one of terminals 162-166 on intranet 140.
[0044]
FIG. 5 shows a modification of the multimedia communication server 110 of FIG. FIG. 6 shows a variation of the multimedia communication relay server 120 of FIG. In FIG. 5, a protocol conversion unit 11409 and a protocol check unit 11410 in FIG. 3 have a protocol having an IP-non-IP conversion function of the protocol conversion unit 11409 and an IP-IP conversion function of the protocol conversion unit 12410 in FIG. The conversion unit 11411 has been replaced. 6, a protocol conversion unit 12410 in FIG. 4 includes a protocol check unit 12411 similar to the protocol check unit 11410 in FIG. 3, and a protocol conversion unit 12413 having an IP-non-IP conversion function of the protocol conversion unit 12410. Has been replaced by
[0045]
FIG. 7 shows another modification of the multimedia communication server 110 of FIG. FIG. 8 shows another variation of the multimedia communication relay server 120 of FIG. The multimedia communication server 110 of FIG. 7 does not include a component such as the management component 118 of FIG. Accordingly, the connection management information transmission / reception unit 11418 in FIG. C. It has been replaced by a management unit 11419 that shares some functions of a management component 118 related to the server 110. Also, the connection management information transmitting / receiving section 12418 in FIG. C. It has been replaced by a management unit 12419 that shares some functions of the management component 118 related to the relay server 120. The management unit 11419 stores management information such as a logical number of a link of each session in the database 1183 relating to calls and multimedia communication handled by the other components 1142 to 1144 and 1161 to 1164. Supply management information to those components on demand. The management unit 12419 stores management information, such as a logical number of a link of each session, related to calls and multimedia communication handled by the other components 1242-1244 and 1261-1264 in its database 1284 and requests the management information. To provide management information to those components accordingly. The management unit 11419 and the management unit 12419 communicate with each other via the receiver / transmitter unit 11412 and the transmitter / receiver unit 12414 to acquire the other management information in the databases 1284 and 1183.
[0046]
FIG. 9 shows a modification of the multimedia communication server 110 of FIG. FIG. 10 shows a variation of the multimedia communication relay server 120 of FIG. 9, a protocol conversion unit 11409 and a protocol check unit 11410 in FIG. 7 include a protocol having an IP-non-IP conversion function of the protocol conversion unit 11409 and an IP-IP conversion function of the protocol conversion unit 12410 in FIG. The conversion unit 11411 has been replaced. 10, the protocol conversion unit 12410 in FIG. 8 includes a protocol check unit 12411 similar to the protocol check unit 11410 in FIG. 7, a protocol conversion unit 12413 having an IP-non-IP conversion function of the protocol conversion unit 12410. Has been replaced by
[0047]
FIG. 11 shows a basic configuration of the intranet terminals 162 to 166 and the external network terminals 240 to 270 in FIGS. Each terminal includes a processor 1621, a storage device 1622, an audio circuit 1623, a display device 1624, and an input device 1625. The storage device 1622 stores a program for signaling communication and multimedia communication used in an inter-terminal communication application such as an IP telephone application executed by the processor 1621. Audio circuit 1623 is coupled to microphone 1632 and speaker 1634. The terminals 162 to 166 and 240 to 270 have a signaling unit and a multimedia communication unit mounted on the processor 1621 according to a program. External network terminals 240 and 250 or NAT router 210 and terminal 270 may be assigned a fixed IP address or IP telephone number.
[0048]
The NAT router 210 has a global address and is connected to terminals 240 and 250 having respective private addresses. The NAT router 210 may have a specific port connected only to a specific terminal 240 or 250 to the NAT router 210.
[0049]
MM. C. Server 110 and the MM. C. Since a link is established between the relay servers 120 according to the non-IP via the communication path 640 or 642, a malicious user can use the MM. C. Even if an illegal access is made to the server 110, the MM. C. Discarded at server 110. Therefore, such an illegal access can be prevented.
[0050]
Next, as an example, the terminals 240 and 270, SIG. C. Component 1141, SIG. C. Relay component 1241, MM. C. Component 1161, MM. C. The protocol and communication procedure used in the relay component 1261 and the terminal 162 will be described. However, similar protocols and communication procedures are used in the other equivalent terminals and components described above. The communication procedure is MM. C. Server 110 and MM. C. It is divided into a phase for establishing a call between the terminal 240 or 270 and the terminal 162 via the relay server 120, and a subsequent phase for multimedia communication between the terminal 240 or 270 and the terminal 162.
[0051]
FIG. 12 shows a signaling section 2402 of the external network terminal 240 or 270, MM. C. The SIG. C. Component 1141, MM. C. The SIG. C. Between the relay component 1241 and the signaling part 1642 of the intranet terminal 162, combinations of connection and link directions and signaling communication protocols used in one form of call establishment are shown. FIG. 13 shows another combination of connection and link directions and signaling communication protocols used in another form of call establishment between them according to the present invention. In the drawing, a wide arrow in one direction indicates the direction of a connection and a link. The MM. C. Server 110 and MM. C. Relay server 120 has the configuration of FIGS. 3 and 4 and FIGS.
[0052]
Referring to FIG. 12, signaling section 2402 of terminal 240 or 270 transmits SIG. C. Establishes a TCP connection with the signaling component SIP 114 or Q.624. 931 and H.E. 245 based on SIG. C. It sends and receives signaling messages to and from component 1141. Therefore, SIG. C. The component 1141 may use one port for SIP, or 931 and H.E. Two ports for H.245 are used.
[0053]
SIG. C. The component 1141 includes the SIG. C. A link with the relay component 1241 based on a non-IP standard such as the USB standard or the IEEE 1394 standard, or a signaling protocol 612 based on a non-IP standard such as the Bluetooth standard or the IEEE 802.11 standard. To send and receive signaling messages.
[0054]
SIG. C. The relay component 1241 establishes a TCP connection with the signaling unit 1642 of the terminal 162, and establishes the signaling protocol Q.632 indicated by 632. 931 and the signaling protocol H.634 indicated at 634. Based on H.245, a signaling message is transmitted / received to / from the signaling unit 1642.
[0055]
Next, with reference to FIG. C. A TCP connection is established with the relay component 1241 and the signaling protocol Q.63 indicated by 633 is established. 931 and the signaling protocol H.635 indicated at 635. 245 based on SIG. C. It sends and receives signaling messages to and from the relay component 1241.
[0056]
SIG. C. The relay component 1241 has the SIG. C. A link is established between the component 1141 based on a non-IP standard such as a USB standard or an IEEE 1394 standard, or a signaling protocol 613 based on a non-IP standard such as a Bluetooth standard or an IEEE 802.11 standard. Send and receive signaling messages.
[0057]
SIG. C. The component 1141 establishes a TCP connection with the signaling unit 2402, and either the signaling protocol SIP indicated by 625 or the Q.264 protocol. 931 and H.E. Based on H.245, a signaling message is transmitted / received to / from the signaling unit 2402.
[0058]
FIG. 14 shows a multimedia communication unit 2404 of the external network terminal 240 or 270, MM. C. The MM. C. Component 1161, MM. C. The MM. C. Between the relay component 1261 and the multimedia communication unit 1644 of the intranet terminal 162, the combination of connection and link directions used on the call and the multimedia communication protocol are shown. Figures 15-19 show the connection and link directions used on the call and other combinations of multimedia communication protocols between them. In the drawing, a wide arrow in one direction indicates the direction of a connection and a link. A bidirectional wide arrow indicates a bidirectional UDP connection. The MM. C. Server 110 and MM. C. Relay server 120 has the configuration of FIGS. 3 and 4 and FIGS.
[0059]
Referring to FIGS. 14, 15 and 16, the MM. C. The component 1161 includes the MM. C. A link is established with the relay component 1261 based on the non-IP signaling protocol, and based on the non-IP multimedia communication protocol indicated by 652, the MM. C. It sends and receives multimedia data streams to and from the relay component 1261. Therefore, the MM. C. Relay component 1261 and MM. C. Each of the components 1161 uses two or more ports depending on the type of media communication, eg, voice, image, text, etc.
[0060]
Referring to FIGS. 17, 18 and 19, the MM. C. The relay component 1261 includes the MM. C. A link is established with the component 1161 based on the non-IP signaling protocol 613, and based on the non-IP multimedia communication protocol indicated by 655, the MM. C. A multimedia data stream is transmitted to and received from the component 1161. Therefore, the MM. C. Relay component 1261 and MM. C. Each of the components 1161 uses two or more ports depending on the type of media communication, eg, voice, image, text, etc.
[0061]
14 to 19, the MM. C. The relay component 1261 and the multimedia communication unit 1644 communicate with the H.264 indicated by 672 over the UDP connection. A multimedia communication protocol RTP for data streams on H.323 and H.264 indicated by 674. Based on the multimedia communication protocol RTCP for controlling the data stream on the H.323, data streams are transmitted and received between the respective UDP ports.
[0062]
Referring to FIGS. 14 and 17, the multimedia communication unit 2404 has the MM. C. A TCP connection is established with the component 1161, and SIP or H.264 indicated at 662 is established. The multimedia communication protocol RTP for the data stream on the H.323 and the SIP or H.264 indicated by 664. MM.323 based on the multimedia communication protocol RTCP for data stream control on the H.323. C. A data stream is transmitted to and received from the component 1161.
[0063]
15 and 18, referring to FIG. C. The component 1161 establishes a TCP connection with the multimedia communication unit 2404, and establishes a SIP or H.263 connection indicated by 663. The multimedia communication protocol RTP for data streams on H.323 and the SIP or H.264 described in 665. A data stream is transmitted / received to / from the multimedia communication unit 2404 based on the multimedia communication protocol RTCP for data stream control on the H.323.
[0064]
16 and 19, the multimedia communication unit 2404 and the MM. C. The component 1161 is a SIP or H.264 component indicated by 666 on a UDP connection. The multimedia communication protocol RTP for data streams on the H.323 and SIP or H.264 indicated at 668. Based on the multimedia communication protocol RTCP for data stream control on H.323, data streams are transmitted and received with each other.
[0065]
FIG. 20 shows the MM. C. The SIG. C. Component 1141 of the connection management information transmitting / receiving section 11418 and the MM. C. The connection management information transmission / reception unit 11618 of the component 1161 and the MM. C. SIG. C. Relay component 1241 of connection management information transmitting / receiving section 12418 and MM. C. The management protocol used in communication between the connection management information transmission / reception unit 12618 of the relay component 1261 and the management component 118 is shown. A wide arrow in one direction indicates the direction of the connection.
[0066]
In FIG. 20, each of the connection management information transmission / reception units 11418, 11618, 12418, and 12618 is connected to the management component 118 by one of its To establish and transmit a connection management message, and then release the link.
[0067]
FIG. 21 shows the MM. C. Server 110 and MM. C. When the relay server 120 has the configuration of FIGS. 7 and 8 and FIGS. 9 and 10, the signaling unit 2402 of the external network terminal 240 or 270, MM. C. The SIG. C. Component 1141, MM. C. The SIG. C. Between the relay component 1241 and the signaling section 1642 of the intranet terminal 162, the combination of the connection and link directions and the protocol of the signaling communication used in the form of call establishment shown in FIG. MM. C. The SIG. C. Component 1141 and the MM. C. The connection management information transmission / reception unit 11618 of the component 1161 and the MM. C. SIG. C. The management unit 12419 of the relay component 1241 and the MM. C. The management protocol used in communication between the connection management information transmission / reception unit 12618 of the relay component 1261 is shown. A wide arrow in one direction indicates the direction of the connection. The management unit 11419 and the management unit 12419 transmit and receive connection management information in a signaling message, as indicated by 618, based on the non-IP protocol 612.
[0068]
FIG. 22 shows the MM. C. Server 110 and MM. C. When the relay server 120 has the configuration of FIGS. 7 and 8 and FIGS. 9 and 10, the signaling unit 2402 of the external network terminal 240 or 270, MM. C. The SIG. C. Component 1141, MM. C. The SIG. C. Between the relay component 1241 and the signaling section 1642 of the intranet terminal 162, the combination of the connection and link directions and the signaling communication protocol used in the form of call establishment shown in FIG. MM. C. The SIG. C. Component 1141 and the MM. C. The connection management information transmission / reception unit 11618 of the component 1161 and the MM. C. SIG. C. The management unit 12419 of the relay component 1241 and the MM. C. The management protocol used in communication between the connection management information transmission / reception unit 12618 of the relay component 1261 is shown. The management unit 11419 and the management unit 12419 transmit and receive connection management information in a signaling message as indicated by 618 based on the non-IP signaling protocol 614.
[0069]
FIG. 23 is a diagram showing the signaling unit 2402 of the external network terminal 240 or 270, MM., Based on the protocol shown in FIG. 12 or 21 when a user of the external network terminal 240 or 270 calls the call center 10. C. The SIG. C. Component 1141, MM. C. The SIG. C. The signaling procedure executed between the relay component 1241 and the signaling unit 1642 of the intranet terminal 162 is shown.
[0070]
Terminal 240 or 270 (signaling section 2402) transmits MM. C. The TCP connection 702 with the server 110 (SIG.C. component 1141) is first established, and then the MM. C. The server 110 (the component 1141) has a SIP or H.264 server. Based on H.323, send a signaling message 704 indicating a call or call connection request or call initiation request. The signaling message 704 includes the terminal 240 or 270 and the MM. C. The information required to perform media communication between servers 110, i.e., the IP address and port number used for media communication by terminal 240 or 270, and the type of media for the call or communication requested by that terminal (e.g., Audio only, audio and video, etc.).
[0071]
MM. C. The server 110 (component 1141) checks the received signaling message 708 for a protocol and, if appropriate, the MM. C. A link 706 is established with the relay server 120 (SIG.C. relay component 1241) to send a call request or signaling request message 710 based on non-IP. The signaling message 710 includes the MM. C. Server 110 and the MM. C. Information required for performing media communication between the relay servers 120, that is, MM. C. Includes the logical number of the link used by server 110 for media communication and the type of media for the call or communication requested by server 110 (eg, audio only, audio and video, etc.).
[0072]
MM. C. In response to receiving the call request message 710, the relay server 120 (the component 1241) first establishes a TCP connection 712 with the intranet terminal 162 (the signaling unit 1642) via the call control device 150, and then the terminal H. 162 (signaling unit 1642). Send a signaling message 714 indicating an incoming call or a call connection request according to H.323. The signaling message 714 includes the MM. C. Information necessary for performing media communication between relay server 120 and terminal 162, that is, MM. C. Includes the IP address and port number used for media communication by relay server 120 and the type of call or communication media requested by the relay server (eg, audio only, audio and video, etc.). .
[0073]
The call control device 150 determines which of the terminals 162 to 166 receives the call, and sets the MM. C. What is necessary is just to establish between the relay server 120 and the determined terminal 162. The call control function of the call control device 150 is MM. C. It may be incorporated in the relay server 120.
[0074]
Terminal 162 (signaling unit 1642) responds to signaling message 714 and, when a call can be established, MM. C. The relay server 120 sends a signaling complete message 716 indicating completion of the call or completion of the call connection to allow the call to be established. The completion message 716 includes the terminal 162 and the MM. C. The information required to perform media communication between relay servers 120, i.e., the IP address and port number used for media communication by terminal 162, and the type of media for the call or communication requested by that terminal (e.g., , Audio only, audio and video, etc.).
[0075]
MM. C. In response to receiving the signaling completion message 716, the relay server 120 (the component 1241) sends the call completion message 718 to the MM. C. Send to server 110 (component 1141). The completion message 718 includes the MM. C. Relay server 120 and MM. C. Information necessary for performing media communication between the servers 110, that is, MM. C. Includes the logical number of the link used for media communication by the relay server 120 and the type of call or communication media accepted by the relay server.
[0076]
MM. C. In response to receiving the call completion message 718, the server 110 (component 1141) sends a signaling completion message 720 indicating the completion of the call connection to the terminal 240 or 270 (signaling unit 2402). The completion message 720 includes, in addition to the completion of the signaling, the terminal 240 or 270 and the MM. C. Information necessary for performing media communication between the servers 110, that is, MM. C. It includes the logical number of the link used for media communication by the server 110 and the type of call or communication media accepted by the server 110.
[0077]
Terminal 240 or 270 causes the call to be established in response to receiving signaling completion message 720. In this way, the user of terminal 240 or 270 and the operator or agent of terminal 162 of call center 10 can perform multimedia communication (for example, IP telephone). Thereafter, the communication procedure continues to FIGS.
[0078]
When all of the terminals 162 to 166 are busy, the call control device 150 or any of the determined terminals 162 to 166 sends a signaling message indicating busy or release completion to the MM. C. Send to relay server 120. MM. C. Relay server 120 responds to the receipt of the message by sending MM. C. Send a busy or release message to server 110. MM. C. Server 110 sends a signaling message indicating busy or release complete to terminal 240 or 270 in response to receiving the message.
[0079]
FIG. 24 shows the signaling section 1642 of the intranet terminal 162 when the operator or agent of the call center 10 calls the external network terminal 240 or 270 based on the protocol shown in FIG. C. The SIG. C. Relay component 1241, MM. C. The SIG. C. The signaling procedure executed between the component 1141 and the signaling unit 2402 of the external network terminal 240 or 270 is shown.
[0080]
Referring to FIG. 24, when the operator or the agent of the terminal 162 of the call center 10 activates the multimedia communication application on the terminal and makes a call to the external network terminal 240 or 270, the terminal 162 (signaling unit 1642) . C. A TCP connection 752 with the relay server 120 (component 1241) is first established, and then the MM. C. It sends a signaling message 754 to the relay server 120 (component 1241) indicating a call or call connection request. MM. C. Relay server 120 (component 1241), in response to the signaling message 754, establishes link 756 and establishes MM. C. A call request message 758 is sent to the server 110 (component 1141).
[0081]
In FIG. C. In order for the server 110 to establish a TCP connection 760 with a specific terminal 240, 250 or 270 connected to the network 40, a specific fixed IP address or IP telephone number is assigned to the specific terminal 240, 250 or 270. Need to be
[0082]
MM. C. When the server 110 establishes a TCP connection with a specific terminal 240 connected to the network 40 via the NAT router 210, the server 110 specifies a specific port connected to the specific terminal 240 to the NAT router 210, Establish a TCP connection with that particular terminal 240 via that port.
[0083]
MM. C. In response to receiving the call request message 758, the server 110 (component 1141) first establishes a TCP connection 760 with the external network terminal 240 or 270 (signaling unit 2402), and then establishes a terminal 240 or 270 (signaling unit). 2402) send a signaling message 762 indicating an incoming call or call connection request. Terminal 240 or 270 (signaling section 2402) responds to signaling message 762 and, when a call can be established, MM. C. Send a signaling complete message 764 to server 110 (component 1141) to allow the call to be established. When busy, terminal 240 or 270 (signaling section 2402) transmits a signaling message indicating busy or release completion to MM. C. Send to server 110 (component 1141).
[0084]
MM. C. In response to receiving the signaling completion message 764, the server 110 (the component 1141) responds by receiving the MM. C. A call completion message 766 is sent to the relay server 120 (component 1241). MM. C. Relay server 120 (component 1241) sends a signaling complete message 768 to terminal 162 (signaling unit 1642) in response to receiving the incoming call complete message 766. The terminal 162 (signaling unit 1642) establishes a call in response to receiving the signaling completion message 768. Thus, the operator or the agent of the terminal 162 of the call center 10 and the user of the terminal 240 or 270 can talk. Thereafter, the communication procedure continues to FIGS.
[0085]
FIG. 25 shows the multimedia communication unit 2404 of the external network terminal 240 or 270, MM. C. The MM. C. Component 1161, MM. C. The MM. C. A multimedia communication procedure executed between the relay component 1261 and the multimedia communication unit 1644 of the intranet terminal 162 is shown.
[0086]
FIG. 26 shows an alternative multimedia communication procedure performed between them based on the protocol of FIG. 15 according to the present invention.
[0087]
FIG. 27 illustrates another alternative multimedia communication procedure performed between them based on the protocol of FIG. 16 according to the present invention.
[0088]
FIG. 28 shows yet another alternative multimedia communication procedure performed between them based on the protocol of FIG. 17 according to the present invention.
[0089]
FIG. 29 shows yet another alternative multimedia communication procedure performed between them based on the protocol of FIG. 18 according to the present invention.
[0090]
FIG. 30 shows yet another alternative multimedia communication procedure performed between them based on the protocol of FIG. 19 according to the present invention.
[0091]
25 to 27, the MM. C. The SIG. If the component 1141 has the MM. C. The SIG. When the link with the component 1241 is established, the MM. C. The MM. C. The component 1161 includes the MM. C. The MM. C. Establish a link 802 with the relay component 1261.
[0092]
28 to 30, the MM. C. The SIG. If the component 1241 is the MM. C. The SIG. When the link with the component 1141 is established, the MM. C. The MM. C. The relay component 1261 includes the MM. C. The MM. C. Establish a link 804 with the relay component 1161.
[0093]
25 to 30, terminals 162 (multimedia communication unit 1644) and MM. C. After transmitting and receiving signaling messages 714 and 716 in FIG. 23 and transmitting and receiving signaling messages 754 and 768 in FIG. 24, relay server 120 (component 1261) communicates with each other using the respective UDP ports determined by the signaling. The UDP connection 812 is established. Terminal 162 (communication unit 1644) and MM. C. A multimedia data stream 818 is transmitted and received between the relay server 120 (component 1261) according to the RTP. MM. C. Relay server 120 (component 1261) and MM. C. Multimedia data stream 816 is transmitted and received between server 110 (component 1161) over established link 804 according to non-IP.
[0094]
25 and 28, when the terminal 240 or 270 (signaling unit 2402) receives the signaling completion message 720 in FIG. 23 and transmits the signaling completion message 764 in FIG. 24, the server 110 ( MM.C. component 1161) using the IP address and port number of the MM.C. C. A TCP connection 810 with the server 110 (MM.C. component 1161) is established. Terminal 240 or 270 (multimedia communication unit 2404) then communicates with terminal 240 or 270 (communication unit 2404) and MM. C. The multimedia data stream 814 is transmitted and received between the server 110 (the component 1161) according to the non-IP.
[0095]
26 and 29, the MM. C. When the server 110 (the component 1161) receives the call completion message 718 in FIG. 23 and the signaling completion message 764 in FIG. 24, the TCP connection 812 between the terminal 110 and the terminal 240 or 270 (the signaling unit 2402). To establish. The terminal 240 or 270 (the multimedia communication unit 2404) then sends the MM. C. A multimedia data stream 814 is transmitted and received between the server 110 (the component 1161).
[0096]
27 and 30, MM. C. The server 110 (the component 1161) and the terminal 240 or 270 (the signaling unit 2402) transmit and receive the signaling messages 704 and 720 in FIG. 23 and transmit and receive the signaling 762 and 764 in FIG. A UDP connection 814 is mutually established using a UDP port. MM. C. A multimedia data stream 824 is transmitted and received between the server 110 (component 1161) and the terminal 240 or 270 (signaling unit 2402) according to RTP.
[0097]
FIG. 31 helps illustrate the relationship between the signaling procedure of FIG. 23 and the multimedia communication procedures of FIGS. 25-27 according to the present invention.
[0098]
In FIG. 31, MM. C. The SIG. C. SIG. C. The component 1141 is transmitted by the signaling unit 2402 as shown in FIG. In response to the connection 702 and the signaling message 704 established with the SIG. C. A link 706 is established between the MM. C. MM. C. A multimedia communication start request 952 is supplied to the component 1161. SIG. C. The relay component 1241 establishes a connection 712 with the signaling unit 1642. As described above, signaling messages are sent and received on the established link 706 and connection 712.
[0099]
MM. C. Component 1161 responds to the multimedia communication start request 952 by the MM. C. MM. C. A link 802 is established with the relay component 1261. MM. C. Component 1161 and MM. C. Connections 810 to 814 shown in FIGS. 25 to 27 are established between the units 2404. MM. C. Relay component 1261 and the MM. C. A connection 812 is established between the units 1644. As described above, multimedia data streams are transmitted and received over established link 802 and connection 812.
[0100]
Then, SIG. C. SIG. C. The component 1142 responds to the connection 703 established by the signaling unit of another external terminal, and the MM. C server 120, another SIG. C. A link 707 is established between the MM. C. It provides another multimedia communication start request 953 to the component 1162. SIG. C. The relay component 1242 establishes a connection 713 with the signaling unit of another intranet terminal. As described above, signaling messages are sent and received on established connections and links.
[0101]
MM. C. Component 1162 responds to the multimedia communication initiation request 953 with another MM. C. A link 803 is established with the relay component 1262. MM. C. Component 1162 and the MM. C. Connections 815 are established between the units in the same manner as the connections 810 to 814 in FIGS. MM. C. Relay component 1262 and its other intranet terminal MM. C. A connection 813 is established between the units. As described above, multimedia data streams are transmitted and received over established connections and links.
[0102]
FIG. 32 helps illustrate the relationship between the signaling procedure of FIG. 24 and the multimedia communication procedures of FIGS. 28-30 in accordance with the present invention.
[0103]
In FIG. C. The SIG. C. SIG. C. The relay component 1241 is transmitted by the signaling unit 1642 as shown in FIG. C. In response to connection 752 and signaling message 754 established with relay component 1241, SIG. C. A link 756 is established between the MM. C. It supplies a start multimedia communication request 955 to the relay component 1261. SIG. C. The component 1141 establishes a connection 760 with the signaling unit 2402 of the external terminal 240 or 270. As described above, signaling messages are sent and received on the established link 756 and connection 760.
[0104]
MM. C. The relay component 1261 responds to the multimedia communication start request 955 by the MM. C. A link 804 is established with the component 1161. MM. C. Relay component 1261 and the MM. C. The connection 812 shown in FIGS. 28 to 30 is established between the units 1644. MM. C. Component 1161 and the MM. C. Connections 810 to 814 are established between the units 2404. As described above, multimedia data streams are transmitted and received over established connections and links.
[0105]
Then, SIG. C. The SIG. C. The relay component 1242 responds to the connection 753 established by the signaling unit of another intranet terminal and responds to the MM. C. Another SIG. C. A link 757 is established between the MM. C. It provides another start communication request 956 to the relay component 1262. SIG. C. The component 1142 establishes a connection 761 with another external terminal signaling unit. As described above, signaling messages are sent and received on established connections and links.
[0106]
MM. C. The relay component 1262 responds to the multimedia communication initiation request 956 with another MM. C. A link 805 is established with the component 1162. MM. C. Relay component 1262 and its intranet terminal MM. C. A connection 813 similar to the connection 812 shown in FIGS. 28 to 30 is established between the units. MM. C. Component 1162 and the MM. C. A connection 815 similar to the connections 810 to 814 is established between the units. As described above, multimedia data streams are transmitted and received over established connections and links.
[0107]
The embodiments described above are given only as typical examples, modifications and variations thereof will be apparent to those skilled in the art, and those skilled in the art may depart from the principle of the present invention and the scope of the invention described in the claims. Obviously, various modifications of the above-described embodiment can be made.
[0108]
(Supplementary Note 1) An information processing device in a DMZ connectable to an external network and another device connectable to an intranet,
Responsive to a signal received from the external network, establishing a first link with the another device and transmitting a signal over the established first link based on a non-Internet protocol; First means configured to establish a call with said another device;
Second means for establishing a second link for data communication with the another device on the established call to send or receive data based on a non-Internet protocol;
An information processing device comprising:
(Supplementary note 2) The information processing apparatus according to supplementary note 1, wherein the first means receives a signal from the external network on a connection established with the external network based on an Internet protocol. .
(Supplementary Note 3) The first unit supplies a communication start request to the second unit in response to the signal received from the external network, and the second device responds to the communication start request. 2. The information processing apparatus according to claim 1, wherein the information processing apparatus establishes the second link.
(Supplementary Note 4) An information processing device in a DMZ connectable to an external network and another device connectable to an intranet,
Means for establishing a connection on the external network and transmitting or receiving data on the established connection based on an Internet protocol;
An information processing device comprising means for establishing a link with said another device and transmitting or receiving data over said established link based on a non-Internet protocol.
(Supplementary Note 5) An information processing device connectable to another device in the DMZ and an intranet,
Responsive to the signal received from the intranet, establishing a link with the another device, transmitting a signal over the established first link based on a non-Internet protocol, First means configured to establish a call with the device;
Second means for establishing a second link for data communication with the another device on the established call to send or receive data based on a non-Internet protocol;
An information processing device comprising:
(Supplementary note 6) The information according to Supplementary note 5, wherein the first means receives a signal from the another device over a connection established with the another device based on an Internet protocol. Processing equipment.
(Supplementary Note 7) The first means supplies a communication start request to the second means in response to the signal received from the external network, and the second device responds to the communication start request. 6. The information processing device according to claim 5, wherein the information processing apparatus establishes the second link.
(Supplementary Note 8) An information processing device connectable to another device in the DMZ and an intranet,
Means for establishing a connection on the intranet and transmitting or receiving data on the established connection based on an internet protocol;
Means for establishing a link with the another device and transmitting or receiving data over the established link based on a non-Internet protocol;
An information processing device comprising:
(Supplementary Note 9) A program stored in a storage medium for an information processing device in a DMZ connectable to an external network and another device connectable to an intranet,
Establishing a first link with the another device in response to a signal received from the external network;
Sending a signal over the established first link based on a non-Internet protocol to establish a call with the another device;
Establishing a second link for data communication with the another device on the established call;
Sending or receiving data over the established second link based on a non-Internet protocol;
A program operable to execute a program.
(Supplementary note 10) The program according to supplementary note 9, operable to execute a step of establishing a connection with the external network based on an Internet protocol.
(Supplementary Note 11) A program stored in a storage medium for an information processing device in a DMZ connectable to an external network and another device connectable to an intranet,
Establishing a connection on the external network;
Establishing a link with said another device;
Sending or receiving data over the established connection based on an Internet protocol;
Sending or receiving data on the established link based on a non-Internet protocol;
A program operable to execute a program.
(Supplementary Note 12) A program stored in a storage medium for an information processing device connectable to another device in a DMZ and an intranet,
Establishing a link with the another device in response to a signal received from the intranet;
Sending a signal over the established first link based on a non-Internet protocol to establish a call with the another device;
Establishing a second link for data communication with the another device on the established call;
Sending or receiving data over the established second link based on a non-Internet protocol;
A program operable to execute a program.
(Supplementary note 13) The program according to supplementary note 12, operable to execute a step of establishing a connection with the another device based on an Internet protocol.
(Supplementary Note 14) A program stored in a storage medium for an information processing device connectable to another device in the DMZ and an intranet,
Establishing a connection on the intranet;
Establishing a link with said another device;
Sending or receiving data over the established connection based on an Internet protocol;
Sending or receiving data on the established link based on a non-Internet protocol;
A program operable to execute a program.
(Supplementary Note 15) A communication method in a DMZ connectable to an intranet and an external network,
Establishing a first link with the another device in response to a signal received from the external network;
Sending a signal over the established first link based on a non-Internet protocol to establish a call with the another device;
Establishing a second link for data communication with the another device on the established call;
Sending or receiving data over the established second link based on a non-Internet protocol;
A communication method, including:
(Supplementary Note 16) A communication method in a DMZ connectable to an intranet and an external network,
Establishing a connection on the external network;
Establishing a link with said another device;
Sending or receiving data over the established connection based on an Internet protocol;
Sending or receiving data on the established link based on a non-Internet protocol;
A communication method, including:
(Supplementary Note 17) A communication method in an information processing device connectable to another device in the DMZ and an intranet,
Establishing a link with the another device in response to a signal received from the intranet;
Sending a signal over the established first link based on a non-Internet protocol to establish a call with the another device;
Establishing a second link for data communication with the another device on the established call;
Sending or receiving data over the established second link based on a non-Internet protocol;
A communication method, including:
(Supplementary Note 18) A communication method in an information processing device connectable to another device in the DMZ and an intranet,
Establishing a connection on the intranet;
Establishing a link with said another device;
Sending or receiving data over the established connection based on an Internet protocol;
Sending or receiving data on the established link based on a non-Internet protocol;
A communication method, including:
[0109]
【The invention's effect】
According to the present invention, it is possible to achieve the establishment of a call and the multimedia communication between a terminal connected to the intranet and a terminal connected to the external network while securing the security of the intranet by the above-described features.
[Brief description of the drawings]
FIG. 1 shows a system configuration including an intranet connected to a server and a terminal and an external network connected to a terminal according to the present invention.
FIG. 2 shows another system configuration including an intranet and an external network according to the present invention.
FIG. 3 shows a configuration of a multimedia communication server.
FIG. 4 shows a configuration of a multimedia communication relay server coupled to the multimedia communication server of FIG. 3;
FIG. 5 shows a variation of the multimedia communication server of FIG.
FIG. 6 shows a variation of the multimedia communication relay server of FIG.
FIG. 7 illustrates another variation of the multimedia communication server of FIG.
FIG. 8 illustrates another variation of the multimedia communication relay server of FIG.
FIG. 9 shows a modification of the multimedia communication server of FIG. 7;
FIG. 10 shows a variation of the multimedia communication relay server of FIG.
FIG. 11 shows a basic configuration of the intranet terminal and the external network terminal in FIGS. 1 and 2.
FIG. 12 shows between a signaling part of an external network terminal, a signaling communication component of a multimedia communication server, a signaling communication relay component of a multimedia communication relay server, and a signaling part of an intranet terminal according to the present invention; 2 shows the combination of connection and link directions and signaling communication protocols used in one form of call establishment.
FIG. 13 illustrates another combination of connection and link directions and signaling communication protocols used in other different forms of call establishment between them, according to the present invention.
FIG. 14 shows a multimedia communication unit of an external network terminal, MM. C. Server MM. C. Component, MM. C. Relay server MM. C. FIG. 4 shows the combination of connection and link directions and multimedia communication protocols used on the call between the relay component and the multimedia communication part of the intranet terminal.
FIG. 15 shows another combination of connection and link directions and multimedia communication protocols used on a call between them.
FIG. 16 shows yet another combination of connection and link directions and multimedia communication protocols used on a call between them.
FIG. 17 shows yet another combination of connection and link directions and multimedia communication protocols used on a call between them.
FIG. 18 shows yet another combination of connection and link directions and multimedia communication protocols used over calls between them.
FIG. 19 illustrates yet another combination of connection and link directions and multimedia communication protocols used over calls between them.
FIG. 20 shows the MM. Of FIGS. 3 and 5 according to the present invention. C. SIG. C. Component connection management information transmission / reception unit and MM. C. Component connection management information transmitting and receiving unit, and the MM. C. SIG. In the relay server. C. Relay component connection management information transmission / reception unit and MM. C. 3 shows a management protocol used in communication between a connection management information transmitting / receiving unit of a relay component and a management component.
FIG. 21 is a diagram showing the MM. C. Server and MM. C. When the relay server has the configuration of FIGS. 7 and 8 and FIGS. 9 and 10, the signaling part of the external network terminal, MM. C. Server SIG. C. Component, MM. C. SIG. Of the relay server. C. Between the relay component and the signaling part of the intranet terminal, the combination of connection and link directions and signaling communication protocols used in the form of call establishment shown in FIG. 12 and the MM. C. SIG. C. Component management unit and MM. C. The connection management information transmission / reception section of the component and the MM. C. SIG. In the relay server. C. The management part of the relay component and the MM. C. 4 shows a management protocol used in communication between the relay component connection management information transmitting / receiving unit.
FIG. 22 is a diagram showing the MM. C. Server and MM. C. When the relay server has the configuration of FIGS. 7 and 8 and FIGS. 9 and 10, the signaling part of the external network terminal, MM. C. Server SIG. C. Component, MM. C. SIG. Of the relay server. C. Between the relay component and the signaling part of the intranet terminal, the combination of the connection and link directions and the protocol of the signaling communication used in the form of call establishment shown in FIG. 13 and the MM. C. SIG. C. Component management unit and MM. C. The connection management information transmission / reception section of the component and the MM. C. SIG. In the relay server. C. The management part of the relay component and the MM. C. 4 shows a management protocol used in communication between the relay component connection management information transmitting / receiving unit.
FIG. 23 is a diagram showing a signaling part of the external network terminal, MM., Based on the protocol shown in FIG. 12 or 21 when a user of the external network terminal calls the call center; C. Server SIG. C. Component, MM. C. SIG. Of the relay server. C. Fig. 2 shows a signaling procedure performed between a relay component and a signaling part of an intranet terminal.
FIG. 24 is a diagram showing a signaling part of an intranet terminal, MM., Based on the protocol shown in FIG. 13 or 22, when a call center operator or agent makes a call to an external network terminal; C. SIG. Of the relay server. C. Relay component, MM. C. Server SIG. C. Fig. 2 shows components and signaling procedures performed between the signaling units of the external network terminals.
FIG. 25 shows a multimedia communication unit of an external network terminal based on the protocol of FIG. 14, MM. C. Server MM. C. Component, MM. C. Relay server MM. C. Fig. 2 shows a multimedia communication procedure performed between a relay component and a multimedia communication unit of an intranet terminal.
FIG. 26 shows an alternative multimedia communication procedure performed between them based on the protocol of FIG. 15 according to the present invention;
FIG. 27 illustrates another alternative multimedia communication procedure performed between them based on the protocol of FIG. 16 according to the present invention.
FIG. 28 illustrates yet another alternative multimedia communication procedure performed between them based on the protocol of FIG. 17 according to the present invention.
FIG. 29 illustrates yet another alternative multimedia communication procedure performed between them based on the protocol of FIG. 18 according to the present invention.
FIG. 30 shows yet another alternative multimedia communication procedure performed between them based on the protocol of FIG. 19 according to the present invention.
FIG. 31 serves to illustrate the relationship between the signaling procedure of FIG. 23 and the multimedia communication procedures of FIGS. 25-27 according to the present invention.
FIG. 32 helps illustrate the relationship between the signaling procedure of FIG. 24 and the multimedia communication procedures of FIGS. 28-30, in accordance with the present invention.
[Explanation of symbols]
40 External network
80, 85, 90 firewall
100 DMZ
110 Multimedia Communication Server
120 Multimedia Communication Relay Server
140 Intranet
150 call controller
162 to 166, 240 to 270 terminals
210 NAT router

Claims (10)

An information processing device in a DMZ connectable to an external network and another device connectable to an intranet,
Responsive to a signal received from the external network, establishing a first link with the another device and transmitting a signal over the established first link based on a non-Internet protocol; First means configured to establish a call with said another device;
Second means for establishing a second link for data communication with the another device on the established call to send or receive data based on a non-Internet protocol;
An information processing device comprising: An information processing device in a DMZ connectable to an external network and another device connectable to an intranet,
Means for establishing a connection on the external network and transmitting or receiving data on the established connection based on an Internet protocol;
An information processing device comprising means for establishing a link with said another device and transmitting or receiving data over said established link based on a non-Internet protocol. An information processing device connectable to another device in a DMZ and an intranet,
Responsive to the signal received from the intranet, establishing a link with the another device, transmitting a signal over the established first link based on a non-Internet protocol, First means configured to establish a call with the device;
Second means for establishing a second link for data communication with the another device on the established call to send or receive data based on a non-Internet protocol;
An information processing device comprising: An information processing device connectable to another device in a DMZ and an intranet,
Means for establishing a connection on the intranet and transmitting or receiving data on the established connection based on an internet protocol;
Means for establishing a link with the another device and transmitting or receiving data over the established link based on a non-Internet protocol;
An information processing device comprising: A program for an information processing device in a DMZ connectable to an external network and another device connectable to an intranet,
Establishing a first link with the another device in response to a signal received from the external network;
Sending a signal over the established first link based on a non-Internet protocol to establish a call with the another device;
Establishing a second link for data communication with the another device on the established call;
Sending or receiving data over the established second link based on a non-Internet protocol;
A program operable to execute a program. A program for an information processing device in a DMZ connectable to an external network and another device connectable to an intranet,
Establishing a connection on the external network;
Establishing a link with said another device;
Sending or receiving data over the established connection based on an Internet protocol;
Sending or receiving data on the established link based on a non-Internet protocol;
A program operable to execute a program. A program for an information processing device connectable to another device in a DMZ and an intranet,
Establishing a link with the another device in response to a signal received from the intranet;
Sending a signal over the established first link based on a non-Internet protocol to establish a call with the another device;
Establishing a second link for data communication with the another device on the established call;
Sending or receiving data over the established second link based on a non-Internet protocol;
A program operable to execute a program. A program for an information processing device connectable to another device in a DMZ and an intranet,
Establishing a connection on the intranet;
Establishing a link with said another device;
Sending or receiving data over the established connection based on an Internet protocol;
Sending or receiving data on the established link based on a non-Internet protocol;
A program operable to execute a program. A communication method in a DMZ connectable to an intranet and an external network,
Establishing a first link with the another device in response to a signal received from the external network;
Sending a signal over the established first link based on a non-Internet protocol to establish a call with the another device;
Establishing a second link for data communication with the another device on the established call;
Sending or receiving data over the established second link based on a non-Internet protocol;
A communication method, including: A communication method in an information processing device connectable to another device in a DMZ and an intranet,
Establishing a link with the another device in response to a signal received from the intranet;
Sending a signal over the established first link based on a non-Internet protocol to establish a call with the another device;
Establishing a second link for data communication with the another device on the established call;
Sending or receiving data over the established second link based on a non-Internet protocol;
A communication method, including:

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