KR100888354B1 - Equipment and method for automatic clear abnormal call - Google Patents

Abstract

An apparatus for automatically releasing an abnormal call of the present invention includes a media channel allocator configured to set a call with a predetermined caller terminal in a predetermined user area and allocate a media channel for the call, and a predetermined kernel area. A media channel opening unit which opens the allocated media channel in the terminal, a terminal call communication unit which maintains a call with the caller terminal through the open media channel in the user area, and a media packet according to the open media channel in the kernel area. A media packet measurement unit for measuring a media packet reception determination unit for determining whether the measured media packet is received within a predetermined media packet reception confirmation time in the user area, and confirming the reception of the media packet as a result of the determination in the user area If the media packet is not received in time, the media When the closure the media channel from the media channel and the closing portion for closing the seat area, and comprises a release device for releasing the call in the call with the calling terminal.

Terminal Management System, SIP, RTP

Description

Apparatus and method for automatically releasing abnormal calls. {EQUIPMENT AND METHOD FOR AUTOMATIC CLEAR ABNORMAL CALL}

1 is a block diagram showing the configuration of an apparatus for automatically releasing an abnormal call according to an embodiment of the present invention.

2 is a flowchart illustrating a method for automatically releasing an abnormal call according to an embodiment of the present invention.

3 is a block diagram illustrating a structure of measuring media information in a kernel region of an apparatus for automatically releasing an abnormal call according to an embodiment of the present invention.

4 is a block diagram showing a configuration of an apparatus for automatically releasing an abnormal call according to another embodiment of the present invention.

5 is a flowchart illustrating a method for automatically releasing an abnormal call according to another embodiment of the present invention.

6 is a block diagram showing the configuration of an apparatus for automatically releasing an abnormal call according to another embodiment of the present invention.

7 is a flowchart illustrating a method for automatically releasing an abnormal call according to another embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

100: caller terminal

200: device for automatically releasing abnormal calls

201: Media packet reception confirmation time setting unit

202: media channel allocation unit

203: media channel opening

204: terminal call communication unit

205: media packet measurement unit

206: media packet reception determination unit

207: media channel closure

208: terminal call release unit

The present invention relates to an apparatus and method for automatically releasing an abnormal call, and more particularly, to automatically cancel an abnormal call for automatically terminating a call when there is no data reception within a reception time of signal data or media data in a media system. An apparatus and method are provided.

Today, due to the rapid spread of the Internet and the demand for various services, the IP (Internet Protocol) network is dramatically developed in terms of performance and service, and accordingly, the demand for more various services is continuously emerging. An example of such a requirement is the delivery of voice signals over an IP network. The transmission of voice signals through the IP network is supported by Voice over Internet Protocol (VoIP), which is now becoming a big part of the IP network along with the transmission of data, thereby increasing the demand for various voice signal transmission functions. .

The basic function of the Session Initiation Protocol (SIP), which has recently attracted the attention of the multimedia service, is that the voice over Internet Protocol (VoIP) terminals such as computers, IP phones, PDAs, and mobile phones are capable of voice communication. Is to set up an arc.

In addition, a media system providing a multimedia service provides media content in real time with the development of a mobile communication network. The real-time media content is a real-time transport protocol (RTP), which is a real-time transport protocol. Although it does not guarantee the real-time transmission of data itself, transceiving applications provide an apparatus for supporting streaming data.

Such a media system may be configured by a caller using the media system to establish a call with the media system using a caller terminal, receive media information of a media system that is periodically transmitted, or call another caller terminal through the media system. You can set up and talk.

However, in the past, since the media system does not always provide a stable call, there is a disadvantage in that the media system needs to be checked for a predetermined time call setting or to monitor an abnormal call (undecoded signal).

The present invention has been made to solve the above-described problems of the prior art, and aims to automatically release an abnormal call of a media system providing a call through a session establishment protocol (SIP).

It is also an object of the present invention to automatically release an abnormal call of a media system providing a call through a real time transport protocol (RTP).

In addition, an object of the present invention is to release the call of the media system even if any of the devices using the session establishment protocol and the real-time transmission protocol of the media system determines the abnormal call.

In addition, an object of the present invention is to detect an abnormal call in a network layer, which is a kernel area of a media system, to release an abnormal call more quickly.

In order to achieve the above object and solve the above-mentioned problems of the prior art, the apparatus for automatically releasing an abnormal call according to an embodiment of the present invention, the media for setting the media packet reception confirmation time in a predetermined user area A packet acknowledgment time setting unit, a media channel allocator for setting a call with a predetermined caller terminal in the user area and allocating a media channel for the call, and the allocated media channel in a predetermined kernel area. A media channel opening unit for opening a terminal, a terminal call communication unit for holding a call with the caller terminal through the open media channel in the user area, and a media packet for measuring a media packet according to the open media channel in the kernel area Measurement unit, the media packet received confirmation time of the media packet measured in the user area A media packet reception determining unit that determines whether or not it is received within the media channel; and a media channel closing unit that closes the media channel when the media packet is not received within the media packet reception confirmation time as a result of the determination in the user area. In the case of closing the media channel, the terminal call release unit for releasing the call with the caller terminal.

The method for automatically releasing an abnormal call according to an embodiment of the present invention may include setting a media packet reception confirmation time in a predetermined user area, and setting a call with a predetermined caller terminal in the user area. Allocating a media channel for the call, opening the allocated media channel in a predetermined kernel region, and maintaining a call with the caller terminal through the open media channel in the user region. Measuring a media packet according to the opened media channel in the kernel region; determining whether the measured media packet is received within a predetermined media packet reception confirmation time in the user region; If it is determined that the media packet is not received within the media packet reception confirmation time, Closing the media channel and releasing the call with the caller terminal when closing the media channel in the user area.

In addition, the apparatus for automatically releasing an abnormal call according to another embodiment of the present invention, the signal update message reception confirmation time setting unit for setting a predetermined signal update message reception confirmation time, INVITE receiving an INVITE signal from a predetermined caller terminal; A signal receiving unit, a second status code transmitter for transmitting a predetermined second status code for an INVITE signal to the caller terminal, and when receiving the second status code to the caller terminal, receiving an ACK signal from the caller terminal. ACK signal receiving unit, a terminal call setting unit for setting up a call through a predetermined caller terminal and a predetermined signal channel, a signal update message receiving unit for receiving a predetermined signal update message from the caller terminal when the call is established with the caller terminal, If you receive a signal update message, A first status code transmitter for transmitting a first status code to the caller terminal, a signal update message reception determining unit determining whether the signal update message is received within the signal update message reception confirmation time, and as a result of the determination, the signal update If the media packet is not received within the message reception confirmation time, the BYE signal transmission unit for transmitting a predetermined BYE signal to the caller terminal and the terminal call release unit for releasing the call with the caller terminal when the BYE signal is transmitted. Include.

The method for automatically releasing an abnormal call according to another embodiment of the present invention may include: setting a predetermined signal update message reception confirmation time, receiving an INVITE signal from a predetermined caller terminal, and receiving an INVITE signal from the caller terminal. Transmitting a predetermined second status code for, receiving an ACK signal from the calling terminal, when the second status code is transmitted to the calling terminal, calling a call through the predetermined signal channel with the calling terminal. Setting, receiving a signal update message from the caller terminal when a call is established with the caller terminal, transmitting a first status code to the caller terminal when receiving the signal update message, the signal Update message receives a predetermined signal update message Determining whether it is received within a confirmation time, if the media packet is not received within the signal update message reception confirmation time, transmitting a predetermined BYE signal to the caller terminal and transmitting the BYE signal. And if the call is released from the caller terminal.

In addition, the apparatus for automatically releasing an abnormal call according to another embodiment of the present invention, the signal update message reception confirmation time setting unit for setting a predetermined signal update message reception confirmation time, receiving an INVITE signal from a predetermined caller terminal An INVITE signal receiver, a second status code transmitter for transmitting a predetermined second status code for the INVITE signal to the caller terminal, and an ACK signal from the caller terminal when the second status code is transmitted to the caller terminal An ACK signal receiving unit, a terminal call setting unit for setting up a call through the caller terminal through a predetermined signal channel, a signal update message receiving unit for receiving a predetermined signal update message from the caller terminal when the call is established with the caller terminal, When a signal update message is received A first status code transmitter for transmitting a first status code to the caller terminal, a signal update message reception determination unit determining whether the signal update message is received within a predetermined signal update message reception confirmation time, and the determination result If the media packet is not received within the signal update message reception confirmation time, the BYE signal transmission unit for transmitting a predetermined BYE signal to the caller terminal, a media packet reception confirmation time setting unit for setting a predetermined media packet reception confirmation time, A media channel allocator for establishing a call with the caller terminal and allocating a media channel for the call, a media channel opener for opening the assigned media channel, and maintaining a call with the caller terminal through the open media channel Terminal call communication unit, the opened A media packet measurement unit measuring a media packet according to a media channel, a media packet reception determination unit determining whether the measured media packet is received within a predetermined media packet reception confirmation time, and as a result of the determination, within the media packet reception confirmation time A terminal for releasing a call with the caller terminal when the media packet is not received, when the media channel closure unit for closing the media channel and the BYE signal are transmitted, or when the media packet is closed. A call release.

In addition, the method for automatically releasing an abnormal call according to another embodiment of the present invention, the step of setting a predetermined signal update message reception confirmation time, receiving an INVITE signal from a predetermined caller terminal, INVITE to the caller terminal Transmitting a predetermined second status code for a signal, if the first status code is transmitted to the calling terminal, receiving an ACK signal from the calling terminal, calling a call through the predetermined signal channel with the calling terminal. Setting, receiving a signal update message from the caller terminal when a call is established with the caller terminal, transmitting a first status code to the caller terminal when receiving the signal update message, the signal Update message is a predetermined number of signal update messages Determining whether it is received within a new acknowledgment time, if the media packet is not received within the signal update message reception acknowledgment time, transmitting a predetermined BYE signal to the caller terminal; acknowledging the media packet acknowledgment Setting a time, establishing a call with the caller terminal and allocating a media channel for the call, opening the assigned media channel, maintaining a call with the caller terminal over the open media channel. Measuring a media packet according to the opened media channel; determining whether the measured media packet is received within a predetermined media packet reception confirmation time; and as a result of the determination, the media within the media packet reception confirmation time If no packet is received the MIDI Closing the channel and releasing the call with the caller terminal when the BYE signal is transmitted or when the media channel is closed.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings and the contents described in the accompanying drawings, but the present invention is not limited or limited to the embodiments.

The apparatus 200 for automatically releasing an abnormal call according to the present invention will be described based on transmitting and receiving information provided from a media system through a session establishment protocol (SIP) and a real time transmission protocol (RTP).

In addition, the present invention may mean a device for operating the media system or the entire media system, and in particular, the present invention will be described based on a device for automatically releasing an abnormal call among media systems.

1 is a block diagram showing the configuration of an apparatus for automatically releasing an abnormal call according to an embodiment of the present invention.

As shown in FIG. 1, a media system 200 and a caller terminal 100 including an apparatus for releasing an abnormal call according to an embodiment of the present invention implement a real-time transport protocol (RTP). Communicate using

In addition, a media system providing media information through the real-time transmission protocol is divided into a user area for transmitting a command and a kernel area for performing a substantial command in the operation of the system. It is not limited or limited.

First, the media packet reception confirmation time setting unit 201 sets the media packet reception confirmation time in the user area.

The apparatus 200 for automatically releasing an abnormal call of the present invention measures a media packet that is periodically received, and if it is not received within the media packet reception confirmation time, considers it as an abnormal call and automatically terminates or releases the call. to be.

That is, the media packet acknowledgment time may vary according to a communication environment of the caller terminal 100 interconnected with the media system 200, which may be set using either the caller terminal 100 or the media system 200. Can be.

Next, the media channel allocator 202 sets up a call with the caller terminal 100 in the user area and allocates a media channel for the call.

The apparatus 200 for automatically releasing an abnormal call receives an INVITE signal according to a call setup request from the original caller terminal 100 and transmits a response code for the INVITE signal.

In this case, the response code is a confirmation signal that the INVITE signal has been normally received by the device 200 for automatically releasing the abnormal call, and the caller terminal 100 receiving the response code automatically releases the abnormal call as a response signal to the response code. The device 200 transmits an ACK signal.

As the ACK signal is received by the apparatus 200 for automatically releasing an abnormal call, a call between the caller terminal 100 and the apparatus 200 for releasing the abnormal call is set. After the call is set up, the media channel allocator 202 is set. Assigns a media channel for the call.

At this time, the allocated media channel is allocated through the real time transport protocol (RTP) as described above.

Next, the media channel opener 203 opens the allocated media channel in the kernel region.

In this case, predetermined media information may be transmitted to the caller terminal 100 through the open media channel. That is, the media channel is opened to allocate a dedicated media channel to the caller terminal 100 and to transmit media information to the caller terminal 100.

Next, the terminal call communication unit 204 maintains a call with the caller terminal 100 through the open media channel in the user area.

As mentioned above, the apparatus 200 for automatically releasing an abnormal call maintains a call with the caller terminal 100 through the open media channel, and transmits the media information requested by the caller terminal.

Next, the media packet measuring unit 205 measures a media packet according to the open media channel in the kernel region.

The media packet refers to a signal in which media information flows through the open media channel, and is repeatedly measured by the media packet measurement unit 205 according to a predetermined period.

Next, the media packet reception determining unit 206 determines whether the media packet measured in the user area is received within the media packet reception confirmation time.

The media packet is repeatedly measured by the media packet measuring unit 205 and is not measured when the call between the apparatus 200 for automatically releasing the abnormal call and the caller terminal 100 is abnormal.

At this time, the media packet reception determination unit 206 determines whether the media packet is received within the set media packet reception confirmation time.

Next, the media channel closure unit 207 closes the media channel when the media packet is not received within the media packet reception confirmation time as a result of the determination in the user area.

For example, when the time set using the media packet acknowledgment time setting unit 201 is 30 seconds, the device 200 periodically measures the media packet by the media packet measuring unit 205 and automatically releases an abnormal call. ) And the caller terminal 100 becomes abnormal and the media channel closure 207 closes the media channel if the media packet is not measured within 30 seconds.

However, the apparatus 200 for automatically releasing an abnormal call continuously maintains a call with the caller terminal 100 when the media packet is received within the media packet reception confirmation time in the user area.

Finally, the terminal call release unit 208 releases the call with the caller terminal when closing the media channel in the user area.

When the media channel is closed, the apparatus 200 for automatically releasing an abnormal call transmits a BYE signal for releasing a call to the caller terminal 100, and the caller terminal 100 transmits a response signal for the BYE signal. To automatically release the call.

In this case, the present invention also provides a function of recognizing an audio silence section and excluding the call release.

In general, media packet transmission in an audio mute section is different according to a codec supported by the caller terminal 100, and some codecs periodically transmit packets as in the case of a non-mute section. In an audio mute section, packets may not be sent for a few seconds (less than 2-3 seconds).

Since the function for the audio mute section is an optional function, this option is supported or not supported according to the codec supported by the caller terminal 100, and if the option is not supported, the audio mute section is not the audio mute section. Likewise, media packets are measured periodically.

That is, even if the operation method is different, the media packet is transmitted within a maximum of 2 to 3 seconds in the audio mute section, which is set to a time of 2 to 3 seconds or more through the media packet acknowledgment time setting, thereby releasing the call even in the audio mute section. You may not.

2 is a flowchart illustrating a method for automatically releasing an abnormal call according to an embodiment of the present invention.

A method for automatically releasing an abnormal call can be performed using the apparatus 200 for automatically releasing an abnormal call, and will be described according to the flow of the call of the caller terminal 100 and the apparatus 200 for automatically releasing an abnormal call. .

At this time, the media system 200 and the caller terminal 100 communicate using a real-time transport protocol (RTP).

First, the media packet reception confirmation time setting unit 201 sets the media packet reception confirmation time in the user area (S201).

This step (S201) is a media packet reception confirmation time that may vary depending on the communication environment of the caller terminal 100 interconnected with the media system 200, either the caller terminal 100 or the media system 200 It is a step to set using.

Next, the media channel allocator 202 sets up a call with a predetermined caller terminal in the user area (S202) and allocates a media channel for the call (S203).

In step S202, when the apparatus 200 for automatically releasing an abnormal call receives an INVITE signal according to a call setup request from the original caller terminal 100, the apparatus 200 transmits a response code for the INVITE signal and responds to the response code. The call is established by receiving the ACK signal as a signal.

Step S203 is a step of allocating a media channel for the call through the aforementioned real time transport protocol (RTP).

Next, the media channel opening unit 203 opens the allocated media channel in the kernel region (S204).

This step (S204) is a step of allocating a dedicated media channel to the caller terminal 100 and opening the media channel for transmitting the media information to the caller terminal 100 side.

Next, the terminal call communication unit 204 maintains a call with the caller terminal through the open media channel in the user area (S205).

This step (S205) is a step of maintaining a call with the caller terminal 100 through the open media channel and transmitting the media information requested by the caller terminal.

Next, the media packet measuring unit 205 measures a media packet according to the opened media channel in the kernel region (S206).

The step S206 is a step of repeatedly measuring the media packet, which means a signal from which media information flows through the open media channel, by a predetermined period using the media packet measurement unit 205.

Next, the media packet reception determination unit 206 determines whether the measured media packet is received within a predetermined media packet reception confirmation time in the user area (S207).

This step (S207) determines whether the media packet is received within the set media packet reception confirmation time when the media packet is not measured when the call between the apparatus 200 for automatically releasing the abnormal call and the caller terminal 100 is abnormal. It's a step.

3 is a block diagram illustrating a structure of measuring media information in a kernel region of an apparatus for automatically releasing an abnormal call according to an embodiment of the present invention.

As shown, the apparatus 200 for automatically releasing an abnormal call measures a media packet according to a call setup between the caller terminal 100 and the apparatus 200 for automatically releasing an abnormal call, which is a kernel region, a network region (Network). Layer).

That is, since the apparatus 200 for automatically releasing an abnormal call determines whether the media packet is measured and received in a network area that is a previous layer of the real time transport protocol, when the media packet cannot be delivered to the real time transport protocol or before, More accurate measurements can be made in case of seals.

Next, the media channel closure unit 207 closes the media channel when the media packet is not received within the media packet reception confirmation time as a result of the determination in the user area (S208).

For example, when the time set using the media packet acknowledgment time setting unit 201 is 30 seconds, the device 200 periodically measures the media packet by the media packet measuring unit 205 and automatically releases an abnormal call. ) And the caller terminal 100 becomes abnormal and the media channel closure 207 closes the media channel if the media packet is not measured within 30 seconds.

However, the apparatus 200 for automatically releasing an abnormal call returns to the previous step (S206) if the media packet is received within the media packet reception confirmation time in the user area, and continuously calls the caller terminal 100. Keep and repeat the media packet.

Next, the terminal call release unit 208 releases the call with the caller terminal 100 when closing the media channel in the user area (S209).

In step S209, when the media channel is closed, the apparatus 200 for automatically releasing an abnormal call transmits a BYE signal for releasing a call to the calling party terminal 100, and sends the BYE signal from the calling terminal 100. Receiving a response signal for the step of automatically releasing the call.

4 is a block diagram illustrating a configuration of an apparatus for automatically releasing an abnormal call according to another embodiment of the present invention.

The present invention may refer to an apparatus for operating the media system or the entire media system, and in particular, the present invention will be described based on an apparatus for automatically releasing abnormal calls among media systems.

As shown in FIG. 4, the media system 300 and the caller terminal 100 including the apparatus for releasing an abnormal call according to another embodiment of the present invention may use a Session Initiation Protocol (SIP). Communicate

First, the signal update message reception confirmation time setting unit 301 sets a predetermined signal update message reception confirmation time.

The apparatus 300 for automatically releasing an abnormal call of the present invention measures a signal update message that is periodically received, and if it is not received within the signal update message reception confirmation time, considers this as an abnormal call and automatically terminates or releases the call. Device.

That is, the signal update message checking time may vary depending on the communication environment of the caller terminal 100 interconnected with the media system 300, which may be set using either the caller terminal 100 or the media system 300. Can be.

Next, the INVITE signal receiver 302 receives the INVITE signal from the caller terminal 100.

At this time, the INVITE signal is a signal that the caller terminal 100 requests to establish a call to the device 300 that automatically releases the abnormal call.

Next, the second status code transmitter 303 transmits a predetermined second status code for the INVITE signal to the caller terminal 100.

In this case, the second status code is an acknowledgment signal indicating that the media system has accepted the INVITE signal.

Next, when the ACK signal receiver 304 transmits the second status code to the caller terminal 100, the ACK signal receiver 304 receives the ACK signal from the caller terminal 304.

At this time, the ACK signal is received by the caller terminal 100, the second status code means that the INVITE signal transmitted from the caller terminal 100 was successfully transmitted to the device 300 for automatically releasing the abnormal call. If so, the caller terminal 100 is a signal transmitted in response to the message.

That is, when the caller terminal 100 receives the second status code, the caller terminal 100 transmits the ACK signal to the apparatus 300 for automatically releasing an abnormal call to confirm that a successful connection is made.

Next, the terminal call setting unit 305 establishes a call with the caller terminal 100 through a predetermined signal channel.

At this time, the terminal call setting unit 305 allocates a dedicated signal channel to the calling party terminal 100 and transmits signal information to the calling party terminal 100.

Next, the signal update message receiver 306 receives the signal update message from the caller terminal 100 when a call is established with the caller terminal 100.

The signal update message means a signal for determining whether a call is established between a caller terminal 100 and an apparatus 300 for automatically releasing an abnormal call through the signal channel to determine whether a new signal is received. 306 is repeatedly received at predetermined intervals.

Next, when receiving the signal update message, the first status code transmitter 307 transmits the first status code to the caller terminal 100.

In this case, the first status code is an acknowledgment signal indicating that the media system has accepted the signal update message.

Next, the signal update message reception determination unit 308 determines whether the signal update message is received within the signal update message reception confirmation time.

The signal update message is repeatedly received by the signal update message receiver 306 periodically, and is not received when the call between the apparatus 300 for automatically releasing the abnormal call and the caller terminal 100 is abnormal.

Next, if the signal update message is not received within the signal update message reception confirmation time, the BYE signal transmitter 309 transmits a predetermined BYE signal to the caller terminal.

For example, when the time set using the signal update message reception confirmation time setting unit 301 is 15 seconds, the device periodically receives a signal update message by the signal update message receiving unit 306 and automatically releases an abnormal call. If the signal between the call 300 and the caller terminal 100 becomes abnormal and a signal update message is not measured within 15 seconds, the BYE signal transmitter 309 transmits a BYE signal to the caller terminal 100.

Finally, the terminal call release unit 310 releases the call with the caller terminal 100 when the BYE signal is transmitted.

5 is a flowchart illustrating a method for automatically releasing an abnormal call according to another embodiment of the present invention.

A method for automatically releasing an abnormal call can be performed using the apparatus 300 for automatically releasing an abnormal call, and will be described according to the flow of calls between the caller terminal 100 and the apparatus 300 for automatically releasing an abnormal call. .

At this time, the media system 300 and the caller terminal 100 communicate using a Session Initiation Protocol (SIP).

First, the signal update message reception confirmation time setting unit 301 sets a predetermined signal update message reception confirmation time (S501).

This step (S501) is set by using any one of the caller terminal 100 or the media system 300 according to the communication environment of the caller terminal 100 interconnected with the media system 300, the signal update message check time. It's a step.

Next, the INVITE signal receiving unit 302 receives the INVITE signal from the caller terminal 100 (S502).

In operation S502, an apparatus 300 for automatically releasing an abnormal call receives an INVITE signal, which is a request signal for setting up a call, from the caller terminal 100 to the apparatus 300 for automatically releasing an abnormal call. .

Next, the second status code transmitter 303 transmits a predetermined second status code for the INVITE signal to the caller terminal 100 (S503).

In step S503, the media system 300 transmits the second status code, which is a confirmation signal indicating that the media system has accepted the INVITE signal, to the caller terminal 100.

Next, when the ACK signal receiver 304 transmits the second status code to the caller terminal 100, the ACK signal receiver 304 receives an ACK signal from the caller terminal 304 (S504).

At this time, the ACK signal is received by the caller terminal 100, the second status code means that the INVITE signal transmitted from the caller terminal 100 was successfully transmitted to the device 300 for automatically releasing the abnormal call. If so, the caller terminal 100 is a signal transmitted in response to the message.

That is, in step S504, when the caller terminal 100 receives the second status code, the caller terminal 100 transmits the ACK signal to the apparatus 300 for automatically releasing the abnormal call to confirm that a successful connection is made. .

Next, the terminal call setting unit 305 establishes a call with the caller terminal 100 through a predetermined signal channel (S505).

In step S505, the terminal call setting unit 305 allocates a dedicated signal channel to the caller terminal 100 and transmits signal information to the caller terminal 100.

Next, when a call is established with the caller terminal 100, the signal update message receiver 306 receives the signal update message from the caller terminal 100 (S506).

The signal update message means a signal for determining whether a call is established between a caller terminal 100 and an apparatus 300 for automatically releasing an abnormal call through the signal channel to determine whether a new signal is received. 306 is repeatedly received at predetermined intervals.

Next, when receiving the signal update message, the first status code transmitter 307 transmits the first status code to the caller terminal 100 (S507).

This step (S507) is a step of transmitting to the caller terminal 100 the first status code indicating that the media system 300 has accepted the signal update message.

Next, the signal update message reception determination unit 308 determines whether the signal update message is received within the signal update message reception confirmation time (S508).

The signal update message is repeatedly received by the signal update message receiver 306 periodically, and is not received when the call between the apparatus 300 for automatically releasing the abnormal call and the caller terminal 100 is abnormal.

Next, when the signal update message is not received within the signal update message reception confirmation time, the BYE signal transmitter 309 transmits a predetermined BYE signal to the caller terminal (S509).

However, if the signal update message is received within the signal update message reception confirmation time as a result of the determination, the process returns to the previous step (S506) and repeats the following steps.

Finally, the terminal call release unit 310 releases the call with the caller terminal 100 when the BYE signal is transmitted.

6 is a block diagram showing the configuration of an apparatus for automatically releasing an abnormal call according to another embodiment of the present invention.

The present invention may refer to an apparatus for operating the media system or the entire media system, and in particular, the present invention will be described based on an apparatus for automatically releasing abnormal calls among media systems.

As shown in FIG. 6, the media system 300 and the caller terminal 100 including the apparatus for releasing an abnormal call according to another embodiment of the present invention may use a Session Initiation Protocol (SIP) or a real time method. Communicate using Real-time Transport Protocol (RTP).

The session establishment protocol (SIP) is a protocol for sending and receiving a message for call establishment between the caller terminal 100 and the device 400 for releasing an abnormal call, and the real time transmission protocol (RTP) is the session establishment protocol (SIP). The media session is opened when the call establishment is normally completed and data such as an actual voice or video flows between the caller terminal 100 and the device 400 for releasing the abnormal call. Accordingly, the session establishment protocol (SIP) and the real time transmission protocol (RTP) have different information.

The present invention can transmit and receive all the different information between the two protocols as described above, it is possible to propose an apparatus for automatically canceling the abnormal call accordingly.

First, the signal update message reception confirmation time setting unit 301 sets a predetermined signal update message reception confirmation time.

The apparatus 400 for automatically releasing an abnormal call of the present invention measures a signal update message that is periodically received, and if it is not received within the signal update message reception confirmation time, considers this as an abnormal call and automatically terminates or releases the call. Device.

That is, the signal update message checking time may vary depending on the communication environment of the caller terminal 100 interconnected with the media system 400, which may be set using either the caller terminal 100 or the media system 400. Can be.

The media packet reception confirmation time setting unit 201 sets the media packet reception confirmation time in the user area.

That is, the media packet reception confirmation time may also vary depending on the communication environment of the caller terminal 100 interconnected with the media system 400, such as the signal update message confirmation time, which is the caller terminal 100 or the media system 400. ) Can be set using either.

Next, the INVITE signal receiver 302 receives the INVITE signal from the caller terminal 100.

At this time, the INVITE signal is a signal that the caller terminal 100 requests to establish a call to the device 300 that automatically releases the abnormal call.

Next, the second status code transmitter 303 transmits a predetermined second status code for the INVITE signal to the caller terminal 100.

In this case, the second status code is an acknowledgment signal indicating that the media system has accepted the INVITE signal.

Next, when the ACK signal receiver 304 transmits the second status code to the caller terminal 100, the ACK signal receiver 304 receives the ACK signal from the caller terminal 304.

In this case, the ACK signal is received by the caller terminal 100 by the second status code indicating that the INVITE signal transmitted from the caller terminal 100 is successfully transmitted to the apparatus 400 for automatically releasing the abnormal call. If so, the caller terminal 100 is a signal transmitted in response to the message.

That is, when the caller terminal 100 receives the second status code, the caller terminal 100 transmits the ACK signal to the apparatus 400 for automatically releasing the abnormal call to confirm that a successful connection is made.

Next, the terminal call setting unit 305 establishes a call with the caller terminal 100 through a predetermined signal channel.

At this time, the terminal call setting unit 305 allocates a dedicated signal channel to the calling party terminal 100 and transmits signal information to the calling party terminal 100.

Next, the media channel allocator 202 sets up a call with the caller terminal 100 in the user area and allocates a media channel for the call.

At this time, the allocated media channel is allocated through the real time transport protocol (RTP) as described above.

Next, the media channel opener 203 opens the allocated media channel in the kernel region.

In this case, predetermined media information may be transmitted to the caller terminal 100 through the open media channel. That is, the media channel is opened for allocating a dedicated media channel to the caller terminal 100 and transmitting the media information to the caller terminal 100.

Next, the terminal call communication unit 204 maintains a call with the caller terminal 100 through the open media channel in the user area.

As mentioned above, the apparatus 400 for automatically releasing an abnormal call maintains a call with the caller terminal 100 through the open media channel, and transmits the media information requested by the caller terminal.

Next, the signal update message receiver 306 receives the signal update message from the caller terminal 100 when a call is established with the caller terminal 100.

The signal update message means a signal for determining whether a call is established between the caller terminal 100 and the apparatus 400 for automatically releasing an abnormal call through the signal channel to determine whether a new signal is received. 306 is repeatedly received at predetermined intervals.

Next, when receiving the signal update message, the first status code transmitter 307 transmits the first status code to the caller terminal 100.

In this case, the first status code is an acknowledgment signal indicating that the media system has accepted the signal update message.

In addition, the media packet measuring unit 205 measures a media packet according to the open media channel in the kernel region.

The media packet refers to a signal in which media information flows through the open media channel, and is repeatedly measured by the media packet measurement unit 205 according to a predetermined period.

Next, the signal update message reception determination unit 308 determines whether the signal update message is received within the signal update message reception confirmation time.

The signal update message is repeatedly received periodically by the signal update message receiving unit 306, and is not received when a call between the apparatus 400 for automatically releasing the abnormal call and the caller terminal 100 is abnormal.

In addition, the media packet reception determination unit 206 determines whether the media packet measured in the user area is received within the media packet reception confirmation time.

The media packet is repeatedly measured by the media packet measuring unit 205 and is not measured when the call between the apparatus 400 for automatically releasing an abnormal call and the caller terminal 100 is abnormal.

Next, if the signal update message is not received within the signal update message reception confirmation time, the BYE signal transmitter 309 transmits a predetermined BYE signal to the caller terminal.

For example, when the time set using the signal update message reception confirmation time setting unit 301 is 15 seconds, the device periodically receives a signal update message by the signal update message receiving unit 306 and automatically releases an abnormal call. If the call between the 400 and the caller terminal 100 becomes abnormal and the signal update message is not measured within 15 seconds, the BYE signal transmitter 309 transmits the BYE signal to the caller terminal 100.

The media channel closing unit 207 closes the media channel when the media packet is not received within the media packet reception confirmation time as a result of the determination in the user area.

For example, when the time set using the media packet acknowledgment time setting unit 201 is 30 seconds, the device 400 periodically measures the media packet by the media packet measuring unit 205 and automatically releases an abnormal call. ) And the caller terminal 100 becomes abnormal and the media channel closure 207 closes the media channel if the media packet is not measured within 30 seconds.

However, the apparatus 400 for automatically releasing an abnormal call continuously maintains a call with the caller terminal 100 when the media packet is received within the media packet reception confirmation time in the user area.

Finally, the terminal call release unit 202 (310) releases the call with the caller terminal 100 when at least one of the transmission of the BYE signal or the case of closing the media channel.

That is, the terminal call release unit 202 or 310 may not receive the signal update message within the signal update message reception confirmation time through a session establishment protocol (SIP), or the media packet may be stored through a real time transmission protocol (RTP). The call with the caller terminal 100 is released even if the media packet is not received within the acknowledgment time.

7 is a flowchart illustrating a method for automatically releasing an abnormal call according to another embodiment of the present invention.

A method for automatically releasing an abnormal call can be performed using the apparatus 400 for automatically releasing an abnormal call, and will be described according to the flow of the caller terminal 100 and the call of the apparatus 400 for automatically releasing an abnormal call. .

At this time, the media system 400 and the caller terminal 100 communicate using a Session Initiation Protocol (SIP) or a Real-time Transport Protocol (RTP).

First, the signal update message reception confirmation time setting unit 301 sets a predetermined signal update message reception confirmation time (S501).

This step (S501) is set by using any one of the caller terminal 100 or the media system 400 according to the communication environment of the caller terminal 100 interconnected with the media system 400, the different signal update message check time It's a step.

In addition, the media packet reception confirmation time setting unit 201 sets the media packet reception confirmation time in the user area (S201).

In step S201, the media packet reception acknowledgment time, which may vary depending on the communication environment of the caller terminal 100 interconnected with the media system 400, is determined by either the caller terminal 100 or the media system 400. It is a step to set using.

Next, the INVITE signal receiving unit 302 receives the INVITE signal from the caller terminal 100 (S502).

In operation S502, the apparatus 400 for automatically releasing an abnormal call receives an INVITE signal, which is a request signal for setting up a call, from the caller terminal 100 to the apparatus 400 for automatically releasing an abnormal call. .

Next, the second status code transmitter 303 transmits a predetermined second status code for the INVITE signal to the caller terminal 100 (S503).

In step S503, the media system 400 transmits the second status code, which is a confirmation signal indicating that the media system 400 has accepted the INVITE signal, to the caller terminal 100.

Next, when the ACK signal receiver 304 transmits the second status code to the caller terminal 100, the ACK signal receiver 304 receives an ACK signal from the caller terminal 304 (S504).

In this case, the ACK signal is received by the caller terminal 100 by the second status code indicating that the INVITE signal transmitted from the caller terminal 100 is successfully transmitted to the apparatus 400 for automatically releasing the abnormal call. If so, the caller terminal 100 is a signal transmitted in response to the message.

That is, in step S504, when the caller terminal 100 receives the second status code, the caller terminal 100 transmits the ACK signal to the apparatus 400 for automatically releasing the abnormal call to confirm that a successful connection is made. .

Next, the terminal call setting unit 305 establishes a call with the caller terminal 100 through a predetermined signal channel (S505).

In step S505, the terminal call setting unit 305 allocates a dedicated signal channel to the caller terminal 100 and transmits signal information to the caller terminal 100.

In addition, the media channel allocator 202 sets up a call with a predetermined caller terminal in the user area (S202) and allocates a media channel for the call (S203).

In step S202, when the apparatus 200 for automatically releasing an abnormal call receives an INVITE signal according to a call setup request from the original caller terminal 100, the apparatus 200 transmits a response code for the INVITE signal and responds to the response code. The call is established by receiving the ACK signal as a signal.

Step S203 is a step of allocating a media channel for the call through the aforementioned real time transport protocol (RTP).

Next, the media channel opening unit 203 opens the allocated media channel in the kernel region (S204).

This step (S204) is a step of allocating a dedicated media channel to the caller terminal 100 and opening the media channel for transmitting the media information to the caller terminal 100 side.

Next, the terminal call communication unit 204 maintains a call with the caller terminal through the open media channel in the user area (S205).

This step (S205) is a step of maintaining a call with the caller terminal 100 through the open media channel and transmitting the media information requested by the caller terminal.

Next, when a call is established with the caller terminal 100, the signal update message receiver 306 receives the signal update message from the caller terminal 100 (S506).

The signal update message means a signal for determining whether a call is established between the caller terminal 100 and the apparatus 400 for automatically releasing an abnormal call through the signal channel to determine whether a new signal is received. 306 is repeatedly received at predetermined intervals.

Next, when receiving the signal update message, the first status code transmitter 307 transmits the first status code to the caller terminal 100 (S507).

This step S507 is a step of transmitting the first status code to the caller terminal 100 indicating that the media system 400 has accepted the signal update message.

In addition, the media packet measuring unit 205 measures a media packet according to the open media channel in the kernel region (S206).

The step S206 is a step of repeatedly measuring the media packet, which means a signal from which media information flows through the open media channel, by a predetermined period using the media packet measurement unit 205.

Next, the signal update message reception determination unit 308 determines whether the signal update message is received within the signal update message reception confirmation time (S508).

The signal update message is repeatedly received periodically by the signal update message receiving unit 306, and is not received when a call between the apparatus 400 for automatically releasing the abnormal call and the caller terminal 100 is abnormal.

Next, the media packet reception determination unit 206 determines whether the measured media packet is received within a predetermined media packet reception confirmation time in the user area (S207).

This step (S207) determines whether the media packet is received within the set media packet reception confirmation time when the media packet is not measured when the call between the apparatus 400 for automatically releasing the abnormal call and the caller terminal 100 is abnormal. It's a step.

Next, when the signal update message is not received within the signal update message reception confirmation time, the BYE signal transmitter 309 transmits a predetermined BYE signal to the caller terminal (S509).

However, if the signal update message is received within the signal update message reception confirmation time as a result of the determination, the process returns to the previous step (S506) and repeats the following steps.

In addition, when the media packet is not received within the media packet reception confirmation time as a result of the determination in the user area, the media channel closing unit 207 closes the media channel (S208).

For example, when the time set using the media packet acknowledgment time setting unit 201 is 30 seconds, the device 400 periodically measures the media packet by the media packet measuring unit 205 and automatically releases an abnormal call. ) And the caller terminal 100 becomes abnormal and the media channel closure 207 closes the media channel if the media packet is not measured within 30 seconds.

However, the apparatus 400 for automatically releasing an abnormal call returns to the previous step (S206) if the media packet is received within the media packet reception confirmation time in the user area, and continuously calls the caller terminal 100. Keep and repeat the media packet.

Finally, the terminal call release unit 202 (310) releases the call with the caller terminal 100 when at least one of the case of transmitting the BYE signal or closing the media channel (S209) (S510) .

That is, the terminal call release unit 202 or 310 may not receive the signal update message within the signal update message reception confirmation time through a session establishment protocol (SIP), or the media packet may be stored through a real time transmission protocol (RTP). The call is released from the caller terminal 100 even if either of the media packets is not received within the acknowledgment time.

Embodiments according to the present invention can be implemented in the form of program instructions that can be executed by various computer means can be recorded on a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. Program instructions recorded on the media may be those specially designed and constructed for the purposes of the present invention, or they may be of the kind well-known and available to those having skill in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks. Magneto-optical media, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like. The hardware device described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

As described above, the present invention has been described by way of limited embodiments and drawings, but the present invention is not limited to the above embodiments, and those skilled in the art to which the present invention pertains various modifications and variations from such descriptions. This is possible. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the claims below but also by the equivalents of the claims.

According to the present invention, an abnormal call of a media system providing a call can be automatically released through a session establishment protocol (SIP).

In addition, according to the present invention, an abnormal call of a media system providing a call can be automatically released through a real time transport protocol (RTP).

In addition, according to the present invention, even when an abnormal call is determined by any one of a device using a session establishment protocol and a real-time transmission protocol of the media system, the call of the media system can be released.

In addition, according to the present invention, an abnormal call can be detected in a network layer, which is a kernel region of a media system, so that the abnormal call can be released more quickly.

Claims (31)

A device for operating a media system, A media channel allocator configured to set up a call with a predetermined caller terminal in a predetermined user area and to allocate a media channel for the call; A media channel opening unit for opening the allocated media channel in a predetermined kernel region; A terminal call communication unit for maintaining a call with the caller terminal through the open media channel in the user area; A media packet measuring unit measuring a media packet according to the open media channel in the kernel region; A media packet reception determination unit that determines whether the measured media packet is received within a predetermined media packet reception confirmation time in the user area; A media channel closure unit configured to close the media channel when the media packet is not received within the media packet reception confirmation time as a result of the determination in the user area; And Terminal call release unit for releasing the call with the caller terminal when closing the media channel in the user area Device for automatically releasing an abnormal call comprising a. The method of claim 1, The device for operating the media system, A media packet acknowledgment time setting unit for setting the media packet acknowledgment time in the user area Device for automatically releasing an abnormal call, characterized in that it further comprises. The method of claim 1, And the media system and the caller terminal communicate using an Real-time Transport Protocol (RTP). The method of claim 1, And the media packet reception acknowledgment time is set using either the caller terminal or the media system. The method of claim 1, And when the media packet is received within the media packet reception confirmation time in the user area, maintaining a call with the caller terminal. In a method for controlling a media system, Setting up a call with a predetermined caller terminal in a predetermined user area and allocating a media channel for the call; Opening the allocated media channel in a predetermined kernel area; Maintaining a call with the caller terminal over the open media channel in the user area; Measuring a media packet according to the open media channel in the kernel region; Determining whether the measured media packet is received within a predetermined media packet reception confirmation time in the user area; Closing the media channel if the media packet is not received within the media packet reception confirmation time as a result of the determination in the user area; And Releasing a call with the caller terminal when the media channel is closed in the user area; Method for automatically releasing an abnormal call comprising a. The method of claim 6, Method for controlling the media system, Setting the media packet reception confirmation time in the user area Method for automatically releasing an abnormal call, characterized in that it further comprises. The method of claim 6, And the media system and the calling party terminal communicate using a Real-time Transport Protocol (RTP). The method of claim 6, The media packet reception acknowledgment time is set using either the caller terminal or the media system. The method of claim 6, And if the media packet is received within the packet reception confirmation time in the user area, maintaining a call with the originator terminal. A computer-readable recording medium in which a program for executing the method of any one of claims 6 to 10 is recorded. A device for operating a media system, A terminal call setting unit for establishing a call through a predetermined caller terminal and a predetermined signal channel; A signal update message receiver configured to receive a predetermined signal update message from the caller terminal when a call is established with the caller terminal; A first status code transmitter for transmitting a first status code to the caller terminal when the signal update message is received, wherein the first status code includes an acknowledgment signal indicating that the media system has accepted the signal update message; box. -; A signal update message reception determination unit determining whether the signal update message is received within a predetermined signal update message reception confirmation time; A BYE signal transmitter for transmitting a predetermined BYE signal to the caller terminal when the signal update message is not received within the signal update message reception confirmation time as a result of the determination; And Terminal call release unit for releasing the call with the caller terminal when the BYE signal is transmitted Device for automatically releasing an abnormal call comprising a. The method of claim 12, The device for operating the media system, A signal update message reception confirmation time setting unit configured to set the signal update message reception confirmation time; An INVITE signal receiver for receiving an INVITE signal from a predetermined caller terminal; A second status code transmitter for transmitting a predetermined second status code for an INVITE signal to the caller terminal, wherein the second status code includes an acknowledgment signal indicating that the media system has accepted the INVITE signal. -; And ACK signal receiving unit for receiving the ACK signal from the caller terminal when the second status code is transmitted to the caller terminal Device for automatically releasing an abnormal call, characterized in that it further comprises. The method of claim 12, And the media system and the caller terminal communicate using an Session Initiation Protocol (SIP). The method of claim 12, The apparatus for automatically releasing an abnormal call, wherein the acknowledgment time for receiving the signal update message is set using either the calling terminal or the media system. In a method for controlling a media system, Establishing a call through a predetermined caller terminal and a predetermined signal channel; Receiving a signal update message from the caller terminal when a call is established with the caller terminal; When the signal update message is received, sending a first status code to the caller terminal, wherein the first status code includes an acknowledgment signal indicating that the media system has accepted the signal update message. -; Determining whether the signal update message is received within a predetermined signal update message reception confirmation time; If the signal update message is not received within the signal update message reception confirmation time, as a result of the determination, transmitting a predetermined BYE signal to the caller terminal; And Releasing a call with the caller terminal when the BYE signal is transmitted. Method for automatically releasing an abnormal call comprising a. The method of claim 16, How to control your media system, Setting an acknowledgment time for receiving the signal update message; Receiving an INVITE signal from a predetermined caller terminal; Sending a predetermined second status code for an INVITE signal to the calling terminal, the second status code including an acknowledgment signal indicating that the media system has accepted the INVITE signal. -; And Receiving the ACK signal from the caller terminal when the second status code is transmitted to the caller terminal Method for automatically releasing an abnormal call, characterized in that it further comprises. The method of claim 16, And the media system and the calling party terminal communicate using a Session Initiation Protocol (SIP). The method of claim 16, The signal update message reception acknowledgment time is set using any one of the caller terminal or the media system. A computer-readable recording medium in which a program for executing the method of any one of claims 16 to 19 is recorded. A device for operating a media system, A terminal call setting unit for establishing a call through a predetermined caller terminal and a predetermined signal channel; A signal update message receiver configured to receive a predetermined signal update message from the caller terminal when a call is established with the caller terminal; A first status code transmitter for transmitting a first status code to the caller terminal when the signal update message is received, wherein the first status code includes an acknowledgment signal indicating that the media system has accepted the signal update message; box. -; A signal update message reception determination unit determining whether the signal update message is received within a predetermined signal update message reception confirmation time; A BYE signal transmitter for transmitting a predetermined BYE signal to the caller terminal when the signal update message is not received within the signal update message reception confirmation time as a result of the determination; A media channel allocator configured to set up a call with the caller terminal and to allocate a media channel for the call; A media channel opening for opening the assigned media channel; A terminal call communication unit for maintaining a call with the caller terminal through the open media channel; A media packet measurement unit measuring a media packet according to the open media channel; A media packet reception determination unit determining whether the measured media packet is received within a predetermined media packet reception confirmation time; A media channel closure unit configured to close the media channel if the media packet is not received within the media packet reception confirmation time as a result of the determination; And A terminal call release unit for releasing a call with the caller terminal when the BYE signal is transmitted or when the media channel is closed. Device for automatically releasing an abnormal call comprising a. The method of claim 21, The device for operating the media system, A media packet acknowledgment time setting unit for setting the media packet acknowledgment time Device for automatically releasing an abnormal call, characterized in that it further comprises. The method of claim 21, The device for operating the media system, A signal update message reception confirmation time setting unit configured to set the signal update message reception confirmation time; An INVITE signal receiver for receiving an INVITE signal from a predetermined caller terminal; A second status code transmitter for transmitting a predetermined second status code for an INVITE signal to the caller terminal, wherein the second status code includes an acknowledgment signal indicating that the media system has accepted the INVITE signal. -; And ACK signal receiving unit for receiving the ACK signal from the caller terminal when the second status code is transmitted to the caller terminal Device for automatically releasing an abnormal call, characterized in that it further comprises. The method of claim 21, The media system and the originator terminal automatically release an abnormal call, wherein the caller terminal communicates using at least one of a Real-time Transport Protocol (RTP) and a Session Initiation Protocol (SIP). Device. The method of claim 21, And the signal update message reception acknowledgment time or the media packet reception acknowledgment time is set using either the caller terminal or the media system. In a method for controlling a media system, Establishing a call with the calling terminal through a predetermined signal channel; When a call is established with the caller terminal, receiving a predetermined signal update message from the caller terminal: When the signal update message is received, transmitting a first status code to the caller terminal; The first status code includes an acknowledgment signal indicating that the media system has accepted the signal update message. -; Determining whether the signal update message is received within a predetermined signal update message reception confirmation time; If the signal update message is not received within the signal update message reception confirmation time, as a result of the determination, transmitting a predetermined BYE signal to the caller terminal; Establishing a call with the calling party terminal and allocating a media channel for the call: Opening the assigned media channel; Maintaining a call with the caller terminal over the open media channel: Measuring a media packet according to the open media channel: Determining whether the measured media packet is received within a predetermined media packet reception confirmation time: Closing the media channel if the media packet is not received within the media packet reception confirmation time as a result of the determination; And Releasing a call with the caller terminal when the BYE signal is transmitted or when one or more of the media channels are closed. Method for automatically releasing an abnormal call comprising a. The method of claim 26, Method for controlling the media system, Setting the media packet reception confirmation time Method for automatically releasing an abnormal call, characterized in that it further comprises. The method of claim 26, Method for controlling the media system, Setting an acknowledgment time for receiving the signal update message: Receiving an INVITE signal from a predetermined caller terminal: Sending a predetermined second status code for an INVITE signal to the calling terminal, the second status code including an acknowledgment signal indicating that the media system has accepted the INVITE signal. -; And Receiving an ACK signal from the caller terminal when the first status code is transmitted to the caller terminal Method for automatically releasing an abnormal call, characterized in that it further comprises. The method of claim 26, The media system and the originator terminal automatically release an abnormal call, wherein the caller terminal communicates using at least one of a Real-time Transport Protocol (RTP) and a Session Initiation Protocol (SIP). Way. The method of claim 26, The signal update message reception confirmation time or the media packet reception confirmation time is set using any one of the caller terminal or the media system. A computer-readable recording medium having recorded thereon a program for executing the method of any one of claims 26 to 30.

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