KR20060027644A - Video telephony service linking system between bcn and internet telephony network and method thereof - Google Patents

Abstract

The present invention relates to a video telephone service interworking system between a BcN and an Internet telephone network. The present invention relates to a system for interfacing a called soft switch or an incoming Internet telephone server by translating a called number transmitted from an outgoing soft switch or an outgoing internet telephone server. Inquires the connection information of the switch or the incoming Internet phone server to transmit a call setup message, receives the IP address and codec information of the called terminal from the incoming soft switch or the incoming Internet phone server, and sends the call to the calling soft switch or the outgoing Internet phone server. A routing unit for transmitting; A signal conversion unit for matching the protocols through signal conversion when it is determined that the connection protocol is inconsistent between the outgoing soft switch or the outgoing Internet phone server and the incoming soft switch or the incoming Internet phone server; And if the IP address and codec information of the called terminal are transmitted from the called soft switch or the called Internet telephone server to the calling soft switch or the calling Internet telephone server, it is determined whether or not the codec negotiation is successful. Codec conversion unit for media conversion between the destination terminal. This enables video phone call interworking between BcN and Internet phone network subscribers with different numbering systems, signaling methods, and codecs.

Description

VIDEO TELEPHONY SERVICE LINKING SYSTEM BETWEEN BcN AND INTERNET TELEPHONY NETWORK AND METHOD THEREOF}

1 is a schematic diagram illustrating a video telephone service interworking system between a BcN and an Internet telephone network according to the present invention;

2 is a detailed block diagram of a video telephone service interworking system between a BcN and an internet telephone network according to the present invention;

Figure 3 is a flow chart illustrating the operation of the video phone service interworking system between the BcN and the Internet phone network according to an embodiment of the present invention.

The present invention relates to a video telephony service interworking system between BcN and Internet telephony network, and more particularly, by establishing an interworking interworking system capable of call routing, signal and media matching, and billing by service providers. And a technology for enabling video telephone call interworking between BcN and Internet telephone network subscribers using a signaling method, codec, and the like, and for performing billing payments between operators.                         

Video telephony and video content services are the most attracting services in the next-generation communication network, and their use is expected to be greatly expanded from the assignment of called numbers to Internet telephones.

Such a video phone service is previously registered with an internet phone service provider, and is assigned to a video phone terminal using a video phone service using an assigned IP address and a subscriber profile of all video phone terminals registered to the subscriber, that is, a real time subscriber. It is composed of internet phone server that provides call connection between video phone terminals registered to itself by managing IP address information.

However, since the Internet phone server does not know the profile of the video phone subscriber registered in another Internet phone server, there is a problem that video phone call connection between different Internet phone providers is impossible. As a solution for this, the interworking method through the PSTN has been proposed, but this is only a measure for the voice session connection, and video session connection is still impossible.

In addition, different signaling methods and codecs for each operator make it difficult to interwork between providers. As a solution to this, there are discussions on applying integrated protocols and standard codecs.However, interworking for coordination among operators in various BcN environments is applied. Introduction of the system is necessary.

The present invention has been made in accordance with the above-described needs, and an object of the present invention is to provide a video telephony service area by connecting a video telephony service call between a BcN service provider and an internet telephony company having a different numbering system, signaling system, codec, and the like. It is to provide technology to expand and enable settlement between operators.

In the video call service interworking system between the BcN and the Internet phone network according to the present invention for solving the above problems, the video through the BcN and the Internet phone server to provide a video call service by performing a call control through a soft switch In a video telephone service interworking system between internet telephone networks providing telephone services, the called soft switch or the called internet telephone server is identified by translating a called number transmitted from a calling soft switch or an outgoing internet telephone server, and the called softening software is identified. Inquires the access information of the switch or the incoming Internet telephone server to transmit a call setup message, and receives the IP address and codec information of the called terminal from the incoming soft switch or the incoming Internet telephone server. Transfer to Outgoing Internet Phone Server A routing unit for transmitting; A signal conversion unit for matching a protocol through signal conversion when it is determined that the signaling protocol between the outgoing soft switch or the outgoing Internet telephone server and the incoming soft switch or the incoming Internet telephony server does not match; And if the IP address and codec information of the called terminal are transmitted from the called soft switch or the called Internet telephone server to the calling soft switch or the calling Internet telephone server, it is determined whether the codec negotiation is successful or not. And a codec conversion unit for media conversion between the calling terminal and the called terminal.                     

In this case, preferably, the interworking system according to the present invention further includes charging means for managing charging information for each voice session and video session for the call set by the routing unit.

And preferably, the interworking system according to the present invention further comprises means for authenticating the outgoing soft switch or outgoing Internet telephony server.

And preferably, the interworking system according to the present invention further comprises a routing DB for storing the access information for a plurality of the soft switch and the Internet phone server, and provides the stored access information to the routing unit.

On the other hand, the video call service interworking method between the BcN providing the video call service by performing the call control through the soft switch according to the present invention and the Internet phone network providing the video call service through the Internet phone server, the outgoing soft switch or A first step of translating the transmitted called number to identify the called soft switch or the called Internet telephone server when the call is originated from the calling Internet telephone server; A second step of inquiring access information of the called soft switch or the called Internet telephone server identified; A third step of determining whether a signaling protocol between the outgoing soft switch or the outgoing Internet telephone server and the incoming soft switch or the incoming Internet telephony server is identical based on the access information, and converting a signal if there is a mismatch; A fourth step of sending a call setup message to the called soft switch or the called Internet telephone server identified; A fifth step of receiving the IP address and codec information of the called terminal from the called soft switch or the called Internet telephone server and transmitting the received IP address and codec information to the calling soft switch or the calling Internet telephone server; Determining whether the codec negotiation between the calling terminal and the called terminal is successful, and if not, performing media conversion between the calling terminal and the called terminal; And a seventh step of connecting a call route between the outgoing video telephone terminal and the incoming video telephone terminal through the outgoing soft switch or the outgoing internet telephone server and the incoming soft switch or the outgoing internet telephone server.

In this case, preferably, when the call path is connected in the seventh step, the call further includes an eighth step of charging for each voice session and video session.

And preferably, a ninth step of authenticating the outgoing soft switch or the outgoing Internet telephony server before identifying the incoming soft switch or the incoming Internet telephony server in the first step.

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

1 is a schematic diagram illustrating a video telephony service interworking system between a BcN and an internet telephone network according to the present invention. The video telephone service interworking system 40 between a BcN and an internet telephony network according to the present invention is a soft switch 20 configured in a BcN. ) Is configured to interwork with the Internet phone server 60 configured in the Internet phone network, and performs a protocol conversion and media conversion for the video phone service, and the video phone between the BcN video phone terminal 10 and the Internet video phone terminal 70. Make the call available.

2 is a detailed block diagram of a video telephone service interworking system 40 between a BcN and an internet telephone network according to the present invention. 1 and 2, the interworking system 40 between the BcN and the Internet telephone network according to the present invention includes an authentication unit 41, a routing unit 42, a routing DB 43, and a signal conversion unit 44. And a charging unit 45 and a codec conversion unit 46.

The authentication unit 41 performs authentication on the calling party soft switch 20 or the Internet telephone server 60 requesting a call setup for a specific called number and transmits the called number to the routing unit 42 upon successful authentication. Perform the function.

The routing unit 42 translates the called number to identify the operator and the corresponding Internet phone server 60 or the soft switch 20 for the called number, and connects to the interworking system from the routing DB 43 described later. The connection information of the telephone server or the soft switch, for example, an IP address, protocol information, or the like is queried to perform a function of requesting a call setup to the called Internet telephone server 60 or the soft switch 20.

In addition, the routing unit 42 transmits the IP address for the called videophone terminal from the called Internet phone server 60 or the soft switch 20, and then sends it to the calling soft switch 20 or the Internet phone server 60. Transfer to, and controls the charging unit 45 to perform the function of charging for the call.

The routing DB 43 stores connection information of the soft switch and the Internet telephone servers connected to the interlocking system 40, for example, IP address, protocol information, and the like.

The signal converting unit 44 performs a function of converting a signal method used in the calling network and the called network when they are different.

The codec converter 46 converts the media between the calling terminal and the called terminal when the codec negotiation is not successful.                     

3 is a flow chart illustrating the operation of the interworking system between the BcN and the Internet phone network according to an embodiment of the present invention, the BcN video phone terminal 10 receiving the video phone service through the soft switch configured in the BcN originating terminal An Internet video phone terminal 70 receiving a video phone service through an Internet phone server configured in the Internet phone network is used as a called terminal.

1 to 3, first, when a video telephone service call to a specific called number is generated from a BcN video telephone terminal 10, which is a calling video telephone terminal (S120), the calling soft switch 20 is a subscriber profile. Inquiring the called number in and determines whether the called number is registered to the self (S140). As a result, if the called number is a registered number, it is determined as the own call, and the called videophone terminal (not shown) is called to connect the call path between the calling videophone terminal and the called videophone terminal (S160). ).

However, in step S140, when the calling party soft switch 20 inquires the called number in the subscriber profile, if the called number is not the number registered to the telephone number of the Internet video telephone terminal 70, It is determined that the other country call, and transmits the call setup message for the IP address query for the called number to the interworking system 40 through the IP network (S180).

The authentication unit 41 of the interworking system 40 receiving the call setup message performs authentication on the calling party soft switch 20, so that the calling party soft switch 20 is determined to be a qualified person. If successful, the called number is transmitted to the routing unit 42.                     

Accordingly, the routing section 42 identifies the called party's Internet telephone server 60 that receives the called number and retrieves connection information (eg, IP address and protocol information) for the called party's Internet telephone server 60. (S210).

As a result of the connection information search result of the called party's Internet telephone server 60, it is determined whether the calling party's soft switch 20 and the protocol are the same (S212), and if they match, the routing unit 42 uses the IP address to make a connection to the called party's Internet. The call setup message is transmitted to the telephone server 60 to query the information on the called Internet video telephone terminal 70 (S214).

However, in step S212, when it is determined that the protocols of the called Internet telephone server 60 and the calling soft switch 20 are not the same, the signal conversion unit 44 is driven to enable message exchange ( S216).

When the called party's Internet phone server 60 transmits the IP address, voice, and video codec information for the incoming video phone terminal 70 to the interworking system 40 in response to the call setup message (S218), the routing unit 42 ) Loads the called IP address, voice and video codec information in the response message to the call setup message transmitted from the calling soft switch 20 and transmits the information to the calling soft switch 20 (S220).

At the same time, the routing unit 42 controls the charging unit 45 to record the charging information for the corresponding call to start charging (S222). The billing information is an outgoing telephone number, outgoing soft switch, called Internet telephone server, incoming telephone number, voice session start time, video session start time, and the like.

The calling party soft switch 20 receiving the destination terminal IP address and the codec information from the interworking system 40 performs codec negotiation to determine success or failure (S224). As a result, if it is determined that the codec negotiation is performed smoothly, the call path between the calling BcN video phone terminal 10 and the called Internet video phone terminal 70 is connected (S226).

However, if the codec negotiation is not successful in step S224, the codec conversion call is notified to the interworking system 40 (S228), the video or audio session is connected via the codec conversion unit 46 (S230).

Meanwhile, the calling soft switch 20 or the called Internet phone server 60 checks whether the video session stop of the call is detected or the termination of the call is detected (S232), and the video session stop of the call or the termination of the call is detected. If so, it transfers to the interlock system 40. The interworking system 40 records the video and audio session end times to the charging unit 45 when the video session stop message or call termination message is transmitted from the calling soft switch 20 or the called Internet phone server 60. Terminates billing for the call (S234), and returns all resources allocated for the call.

By the above-described method, when a subscriber registered to a specific soft switch requests a call connection to a phone number registered to another Internet telephone server, a call path between the incoming and outgoing video telephone terminals is connected.

Therefore, according to the present invention, regardless of the operator and the video telephony system, it is possible to connect a call to the requested called number from the calling video telephony terminal, thereby providing a wide range of services to the user using the video telephony service. .                     

In addition, the present invention has the effect of protecting the interests of the user by providing separate charges for video calls and voice calls and enable settlement between operators.

In addition, a preferred embodiment of the present invention is for the purpose of illustration, those skilled in the art will be able to various modifications, changes, substitutions and additions through the spirit and scope of the appended claims, such modifications and changes are the following claims It should be seen as belonging to a range.

Claims (7)

In the video call service interworking system between the BcN for providing the video call service through the soft switch and the internet phone network for providing the video call service through the internet phone server, Translates a called number transmitted from an outgoing soft switch or an outgoing internet telephone server to identify an incoming soft switch or an incoming internet telephone server, and inquires the connection information of the identified incoming soft switch or the incoming internet telephone server to call setup message. A routing unit configured to transmit and receive IP address and codec information of a called terminal from the called soft switch or the called Internet telephone server and transmit the received IP address and codec information to the calling soft switch or the calling Internet telephone server; A signal conversion unit for matching a protocol through signal conversion when it is determined that the signaling protocol between the outgoing soft switch or the outgoing Internet telephone server and the incoming soft switch or the incoming Internet telephony server does not match; And If the IP address and codec information of the called terminal from the called soft switch or the called Internet telephone server are transmitted to the calling soft switch or the calling Internet telephone server, it is determined whether the codec negotiation performed in succession is successful. A video call service interworking system between a BcN and an Internet telephone network, comprising a codec converting unit for converting media between a calling terminal and a called terminal. The method of claim 1, And a charging means for managing charging information for each voice session and video session for the call set by the routing unit. The method of claim 1, And a means for authenticating the outgoing soft switch or outgoing internet telephony server. The method of claim 1, A video communication service interworking system between the BcN and the Internet telephone network further comprising a routing DB storing the access information for the plurality of soft switches and the Internet telephone server and providing the stored access information to the routing unit. . In the video telephone service interworking method between the BcN for providing a video telephone service by performing a call control through a soft switch and the internet telephone network for providing the video telephone service through an internet telephone server, When the call is originated from the originating soft switch or the originating internet telephone server, translating the transmitted called number to identify the incoming soft switch or the incoming internet telephone server; A second step of inquiring access information of the called soft switch or the called Internet telephone server identified; A third step of determining whether a signaling protocol between the outgoing soft switch or the outgoing Internet telephone server and the incoming soft switch or the incoming Internet telephony server is identical based on the access information, and converting a signal if there is a mismatch; A fourth step of sending a call setup message to the called soft switch or the called Internet telephone server identified; A fifth step of receiving the IP address and codec information of the called terminal from the called soft switch or the called Internet telephone server and transmitting it to the calling soft switch or the calling Internet telephone server; Determining whether the codec negotiation between the calling terminal and the called terminal is successful, and if not, performing media conversion between the calling terminal and the called terminal; And And a seventh step of connecting a call route between the calling terminal and the called terminal through the calling soft switch or the calling internet telephone server and the called soft switch or the called internet telephone server. How to link video call service. The method of claim 5, If the call path is connected in the seventh step, the video call service interworking method between the BcN and the Internet telephone network further comprises the eighth step of charging for each call, voice session and video session. The method of claim 5, And the ninth step of authenticating the outgoing soft switch or the outgoing internet phone server before identifying the incoming soft switch or the incoming internet phone server in the first step. How to link video call service.

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