KR100567318B1 - Call processing apparatus and method capable of processing multi-service in next generation communication networks - Google Patents

Abstract

Disclosed are a call processing apparatus and method capable of processing a multiservice in a next generation communication network. When receiving a call processing request from the subscriber, the number translation is performed. The first routing process, the second routing process, and the third routing process are selectively performed according to the type of the call identified by the number translation. Next, a call is established by performing one routing process among the first to third routing processes. At this time, the first routing process is performed when a call is made to a different soft switch, the second routing process is performed when a call is made to a same soft switch, and the third routing process is performed when a call is made to a SIP server. . As a result, efficient number translation is possible when various call types are required, and call processing from the same soft switch to a SIP server using an IP network is possible in a next-generation communication network, thereby providing various multiservices.

Soft Switch, Number Translation, Routing, SIPT, MEGACO

Description

Call processing apparatus and method capable of processing multi-service in next generation communication networks

1 is a diagram showing a network structure when a call processing request to the same soft switch in a next generation communication network;

FIG. 2 is a diagram illustrating a process of processing a message when call requests are made to different soft switches in the next-generation communication network shown in FIG. 1;

3 is a diagram illustrating a network structure when a call processing request is made to the same soft switch in a next-generation communication network;

4 is a diagram illustrating a process of processing a message when a call is requested to the same soft switch in the next-generation communication network shown in FIG. 3;

5 is a diagram illustrating a network structure of a call request to a SIP server of an IP network rather than a call request to a PSTN network;

6 is a diagram illustrating a process of processing a message when a call is requested to a SIP server in the next-generation communication network shown in FIG. 5;

7 is a flowchart illustrating a routing process of controlling the number translation of a soft switch capable of multiservice processing and a protocol form between soft switches in a next generation communication network.

The present invention relates to a call processing apparatus and method in a next generation communication network, and more particularly, to a call processing apparatus and method in a next generation communication network based on a call type.

Since the existing communication network only provides a service for call processing between different softswitches, the multi-service processing in the existing communication network was not possible. In addition, in the prior art, it was not possible to select a protocol when handling a protocol between different soft switches. Such a conventional soft switch cannot provide a function suitable for the current situation in which various network operators and service providers using different protocols are increasing. In addition, the conventional soft switch cannot support a call type using a SIP phone rather than a call using a PSTN-IP-PSTN network as the VoIP service increases.

The technical problem to be achieved by the present invention is a call processing apparatus capable of multi-service processing in a next-generation communication network capable of translating and routing number of various call types for each network type during soft switch call processing required by the International Standardization Forum related to open service. And a method.

In order to achieve the above technical problem, an embodiment of a call processing apparatus capable of processing a multiservice in a next-generation communication network according to the present invention includes: a subscriber access unit receiving an outgoing signal from a subscriber station; A number translation unit for performing a number translation on the basis of the originating signal to determine the form of the call and performing a soft switch group routing request if the identified call is a call request to a different soft switch; A routing unit which, upon receiving the soft switch group routing request from the number translation unit, determines the outgoing switch by searching the identification information of the soft switch, and then requests call power for call setup; And a protocol unit for transmitting a response to the call force request input from the routing unit to the subscriber access unit, wherein the subscriber access unit is initially initialized to the protocol unit when receiving the response to the call force request from the protocol unit. It transmits an access message and identification information and message information of the subscriber station, the protocol unit based on the information received from the subscriber access unit resource path from the subscriber terminal to the external device via the incoming switch and the outgoing switch Set.

In order to achieve the above technical problem, another embodiment of a call processing apparatus capable of processing a multiservice in a next-generation communication network according to the present invention includes: a first subscriber connection unit receiving an outgoing signal from a subscriber station; A number translation unit for performing a number translation on the basis of the originating signal to determine the form of the call and performing a trunk group routing request if the identified call is a request to the same soft switch; A routing unit for transmitting trunk group information to the subscriber access unit when receiving the trunk group routing request from the number translation unit; And a second subscriber access unit which transmits a response to the call force request upon receiving the trunk group information from the routing unit, wherein the first subscriber access unit responds to the call force request from the second subscriber access unit. On receiving this, set the resource path to the external device.

In order to achieve the above object, another embodiment of a call processing apparatus capable of processing a multiservice in a next-generation communication network according to the present invention includes: a subscriber access unit receiving an outgoing signal from a subscriber station; A number translation unit for performing a number translation on the basis of the originating signal, identifying a form of a call, and requesting a calling power to the protocol server if the identified call is a request to a protocol server; And a protocol unit configured to output a response signal to the call force request to the subscriber access unit and to set a resource path between the subscriber access unit and an external device when an initial access message is received from the subscriber access unit.

In order to achieve the above technical problem, a call processing method capable of processing a multiservice in a next generation communication network according to the present invention includes: receiving an outgoing signal from a subscriber station; Determining the shape of the call by performing number translation on the basis of the originating signal; Selectively performing a first routing process, a second routing process, and a third routing process according to the form of the call; And setting up a call by performing one routing process among the first to third routing processes, wherein the first routing process is performed when a call is requested to different softswitches, and the second routing process is performed. The process is performed when a call is made to the same soft switch, and the third routing process is performed when a call is made to the protocol server.

According to the present invention, efficient number translation is possible when various call types are required, and call processing to the SIP server using an IP network and call processing in the same soft switch can provide various multiservices in the next-generation communication network.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of a call processing apparatus and method capable of processing a multi-service in a next-generation communication network.

FIG. 1 is a diagram illustrating a network structure when a call processing request is made to a same soft switch in a next generation communication network, and FIG. 2 is a diagram illustrating a process of processing a message when a call is requested to different soft switches in a next generation communication network shown in FIG. 1. One drawing.

Referring to Figure 1, the Internet-based integrated network includes a soft switch (110, 140), local switch (120, 150), and media gateway (130, 160).

Softswitches 110 and 140 provide call control and media gateway control and management functions, such as call access and control, number translation and routing functions. Local exchange (120, 150) provides a function to deliver a message to the subscriber connected to the PSTN network to the PSTN exchange. The media gateways 130 and 160 are in charge of the exchange transmission under the control of the soft switches 110 and 140. The media gateways 130 and 160 may perform a path control function for transmitting user information, and may perform media conversion between the PSTN pulse code conversion stream and the Internet packet. Perform.

In the next-generation communication network, softswitch and media gateway act as a core node directly connecting the Internet network and PSTN network, and a standard interface operated by Megaco protocol is used between the two systems. The SIP-T or BICC protocol may be used between the soft switches.

When the internet network and users are expanded, several softswitches must exist for efficient call processing. In consideration of this, several softswitches are grouped into one softswitch group according to distance characteristics. There may be a plurality of such softswitch groups, so that the softswitch group may be determined when number translation is performed. In addition, when the soft switch is determined, processing is performed by Session Initial Protocol for Telephones (SIP-T) or Bearer Independent Call Control (BICC), respectively, according to the protocol type connected between the soft switches.

Referring to FIG. 2, an outgoing signal input from a subscriber is transferred to an integrated services digital network user part (ISP) 20 through a signal gateway (S200). The ISUP 20 requests the number translation to the number translation unit 22 (S210). The number translation unit 22 performs a number translation to determine the form of the call (S220). If the number translation results in a call request to different soft switches, the number translation unit 22 transmits a soft switch group routing request for selecting one soft switch among the plurality of soft switches 110 and 140 to the routing unit 24. (S230). The routing unit 24 searches for the soft switch ID to determine the outgoing soft switch and requests call power to the SIPT 28 for call setup (S240).

The SIPT 28 transmits a response to the call force requested by the ISUP 20 (S250). The ISUP 20 sends IAM (Initial Address Message) data and PSTNTermID and MGID information for bearer setup to the SIPT 28 (S260). Next, a resource path setting request and response are performed between the calling subscriber and the media server (S270). The incoming soft switch sends an INVITE requesting call setup to the corresponding outgoing soft switch (S280). Finally, the request and response for the path set between the soft switch is transmitted and received (290).

3 is a diagram illustrating a network structure when a call processing request is made to a same soft switch in a next generation communication network, and FIG. 4 is a diagram illustrating a process of processing a message when a call is requested to a same soft switch in a next generation communication network shown in FIG. 3. to be. Since there is only one soft switch 310 in the network structure shown in FIG. 3, since the call does not need to be handed over to the SIP-T or BICC protocol for branching to another soft switch, this process is omitted, and the trunk is immediately connected to the ISUP. To set up the bearer.

Referring to FIG. 4, an outgoing signal input from the subscriber is transmitted to the ISUP 40 through the signal gateway (S400). The ISUP 40 requests the number translation to the number translation unit 42 (S410). The number translation unit 42 determines the call form by number translation (S420). If the number translation results in a call request to the same soft switch, the number translation unit 42 transmits the trunk group routing request to the routing unit 44 (S430). The routing unit 44 transmits trunk group information determined for bearer setup to the ISUP 48 (S440).

Upon receiving the response to the trunk request (S450), the ISUP 48 sets up a resource path between the calling subscriber and the destination media server (S460). If the path is established, the ISUP 40 transmits an IAM message to the ISUP 48 (S470). The ISUP 48 and the MEGACO unit 46 check the set path (S480).

FIG. 5 is a diagram illustrating a network structure of a call request to a SIP server of an IP network rather than a call request to a PSTN network, and FIG. 6 is a message processing message of a call request to a SIP server in a next-generation communication network shown in FIG. A diagram illustrating the process. In the case of call processing to the SIP server 540, the number translation process is unnecessary, so the soft switch 510 assigns a specific value representing the SIP server 540 to the soft switch group field and omits the number translation process.

5 and 6, the outgoing signal input from the subscriber is transmitted to the ISUP 60 through the signal gateway (S600). The ISUP 60 requests the number translation to the number translation unit 62 (S610). If the number translation result is a call request to the SIP server, the number translation unit 62 immediately requests the call power to the SIPT 68 (S620). The SIPT 68 transmits a signal in response to the call force request to the ISUP 60 (S630). The ISUP 60 transmits the IAM message to the SIPT 68 (S640). Upon receiving the IAM message, the SIPT 68 sets up a resource path between the calling subscriber and the called media server (S650). When the resource path is set, the incoming soft switch sends an INVITE requesting call setup to the corresponding outgoing soft switch (S660). Finally, the SIPT 68 and the MEGACO 66 check the established path (S670).

FIG. 7 is a flowchart illustrating a routing process for controlling a number translation of a soft switch capable of multiservice processing and a protocol form between soft switches in a next generation communication network.

Referring to FIG. 7, a protocol is used to receive a number translation request for a calling number and soft switch information (S700). Next, the shape of the call to be processed by performing the number translation is identified (S710). Steps 730 to 750 are selectively performed according to the type of the translated call (S720).

If the call type is a call request to different softswitches, softswitch routing is requested (S730). Next, after confirming the protocol type (S760), the call power is transmitted with different calling powers according to the protocol type (S770, S780). On the contrary, if the call type is a call request to the same soft switch, a bearer setting request is immediately made to the ISUP without the call force request (S740). On the other hand, when the call is a call request to the SIP server, the call power is immediately requested to the SIPT without performing the number translation and routing functions (S750).

The invention can also be embodied as computer readable code on a computer readable recording medium. The computer-readable recording medium includes all kinds of recording devices in which data that can be read by a computer device is stored. Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like, and may also be implemented in the form of a carrier wave (for example, transmission over the Internet). Include. The computer readable recording medium can also be distributed over network coupled computer devices so that the computer readable code is stored and executed in a distributed fashion.

Although the preferred embodiments of the present invention have been shown and described above, the present invention is not limited to the specific preferred embodiments described above, and the present invention belongs to the present invention without departing from the gist of the present invention as claimed in the claims. Various modifications can be made by those skilled in the art, and such changes are within the scope of the claims.

According to a call processing apparatus and method capable of processing multi-services in a next-generation communication network according to the present invention, an effective number translation is possible when various call types are required, and a SIP server using call processing and IP network in the same soft switch in a next-generation communication network Call processing is possible, and various multiservices can be provided.

Claims (13)

A subscriber access unit for receiving an outgoing signal from the subscriber terminal; A number translation unit for performing a number translation on the basis of the originating signal to determine a form of a call, and performing a soft switch group routing request if the identified call form is a call request to a different soft switch; A routing unit which, upon receiving the soft switch group routing request from the number translation unit, determines the outgoing switch by searching the identification information of the soft switch, and then requests call power for call setup; And And a protocol unit configured to transmit a response to the request for call force input from the routing unit to the subscriber access unit. The subscriber access unit transmits an initial access message, identification information and message information of the subscriber station to the protocol unit when receiving a response to the request of the call power from the protocol unit, The protocol unit is capable of processing multi-service in the next generation communication network, characterized in that for setting the resource path from the subscriber terminal to the external device via the incoming switch and the outgoing switch based on the information received from the subscriber access unit. Call processing unit. The method of claim 1, And the incoming call switch transmits a message requesting call setup to the outgoing switch when the resource path is set, and requests call setup. A first subscriber access unit receiving an outgoing signal from a subscriber station; A number translation unit for performing a number translation on the basis of the originating signal to determine the form of the call and performing a trunk group routing request if the identified call is a request to the same soft switch; A routing unit which transmits trunk group information when the trunk group routing request is received from the number translation unit; And And a second subscriber access unit which transmits a response to the call request when receiving the trunk group information from the routing unit. And the first subscriber access unit sets a resource path to an external device when receiving the response to the call request from the second subscriber access unit. The method of claim 3, wherein And the second subscriber access unit checks whether the resource path is set based on the initial access message received from the first subscriber access unit. A subscriber access unit for receiving an outgoing signal from the subscriber terminal; A number translation unit for performing a number translation on the basis of the originating signal, identifying a form of a call, and requesting a calling power to the protocol server if the identified call is a request to a protocol server; And And a protocol unit configured to output a response signal for the call request to the subscriber access unit and to set a resource path between the subscriber access unit and an external device when an initial access message is received from the subscriber access unit. Call processing apparatus capable of processing multiservices in a communication network. The method of claim 5, The incoming call switch existing on the set resource path transmits a message requesting call establishment to the outgoing call switch existing on the set resource path and requests call establishment. Call processing unit available. delete Receiving an outgoing signal from a subscriber station; Determining the shape of the call by performing number translation on the basis of the originating signal; Selectively performing a first routing process, a second routing process, and a third routing process according to the form of the call; And And setting up a call by performing one routing process among the first to third routing processes. The first routing process is performed when a call is made to different softswitches, the second routing process is performed when a call is made to the same softswitch, and the third routing process is performed when a call is made to a protocol server. , The first routing process, Performing a softswitch group routing request; Searching for identification information of the soft switch to determine an outgoing switch and requesting a call force for call setup; Transmitting a response to the request for call force to a subscriber access unit receiving the call signal from the subscriber terminal; Transmitting an initial access message and identification information and message information of the subscriber station when the subscriber access unit receives a response to the request for call power; And Setting a resource path from the subscriber station to an external device via the incoming switch and the outgoing switch based on the information received from the subscriber access unit; multi-process processing in a next-generation communication network, comprising: Possible call processing methods. The method of claim 8, The incoming call switch is a call processing method capable of processing a multi-service in the next generation communication network, characterized in that for requesting call setup by sending a message requesting call setup to the outgoing switch when the resource path is set. Receiving an outgoing signal from a subscriber station; Determining the shape of the call by performing number translation on the basis of the originating signal; Selectively performing a first routing process, a second routing process, and a third routing process according to the form of the call; And And setting up a call by performing one routing process among the first to third routing processes. The first routing process is performed when a call is made to different softswitches, the second routing process is performed when a call is made to the same softswitch, and the third routing process is performed when a call is made to a protocol server. , The second routing process, Performing a trunk group routing request; Transmitting trunk group information to a second subscriber access unit from a subscriber terminal to a first subscriber access unit receiving the outgoing signal; Transmitting a response to the call request when the second subscriber access unit receives the trunk group information; And And setting a resource path to an external device when the first subscriber access unit receives a response to the call request from the second subscriber access unit. Call processing capable of processing a multi-service in a next-generation communication network, comprising: Way. The method of claim 10, And the second subscriber access unit checks whether the resource path is set based on the initial access message received from the first subscriber access unit. Receiving an outgoing signal from a subscriber station; Determining the shape of the call by performing number translation on the basis of the originating signal; Selectively performing a first routing process, a second routing process, and a third routing process according to the form of the call; And And setting up a call by performing one routing process among the first to third routing processes. The first routing process is performed when a call is made to different softswitches, the second routing process is performed when a call is made to the same softswitch, and the third routing process is performed when a call is made to a protocol server. , The third routing process, Outputting a response signal for the call request to a subscriber access unit receiving the originating signal; And And setting a resource path between the subscriber access unit and an external device when receiving an initial access message from the subscriber access unit. The method of claim 12, The incoming call switch existing on the set resource path transmits a message requesting call establishment to the outgoing call switch existing on the set resource path and requests call establishment. Possible call handling methods.

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