JP2009206756A - Communication terminal apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allow notification of message in a wanted size between a communication terminal on a caller side and that on a call termination side prior to speech. <P>SOLUTION: At a communication terminal on a caller side, a message of business for speech and a caller telephone number are input and stored in a business storing memory 3. When calling, a MESSAGE request message in which its destination is the stored caller telephone number and the stored business message is described in a body part is generated and transmitted. Meanwhile, at the communication terminal on a call termination side, the business message is extracted from the MESSAGE request message sent from the communication terminal on the caller side, and the business message is stored in the business storing memory 3. Text data and video data in the received business message are displayed on a monitor 12, and further, voice data in the business message is output as a voice message from a speaker 8. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a communication terminal apparatus having a call connection function based on SIP (Session Initiation Protocol (RFC3261)).

  In recent years, along with the development of networks and technologies that support the information sharing society, such as the rapid spread and expansion of IP (Internet Protocol) networks such as the Internet and the speeding up of networks, voice communication is performed between terminals using IP networks. Is becoming mainstream. In this system, SIP is used as a call control protocol.

  By the way, it is very convenient for the caller if the caller is notified in advance of information such as a business condition without stopping at the telephone number of the caller when making a call. Therefore, for example, a service that sends a simple text message from the calling terminal to the called terminal at the time of call connection and displays this text message on the screen of the called terminal has been put into practical use (for example, non- (See Patent Document 1).

Kuroiwa, Sugiyama: “Development of call display character display system”, IEICE Communication Society, 2006, B-6-22

  However, since the system described in Non-Patent Document 1 inserts a character message into the User-User information area of the SETUP message, the maximum number of characters that can be transmitted is as small as 35 or 131 octets, and the requirements are sufficient. I couldn't tell.

  The present invention has been made paying attention to the above circumstances, and an object of the present invention is to provide a communication terminal device capable of notifying a message of a desired size between a calling party and a called party prior to a call. There is to do.

In order to achieve the above object, one aspect of the present invention has a call connection function using SIP (Session Initiation Protocol), and communicates with other communication terminal devices via a communication network by this call connection function. A communication terminal device that establishes a session and performs communication, and accepts prior notification information including a call request and subscriber information for specifying another communication terminal device as a communication partner prior to making a call. The received information is stored in the memory. When receiving a call request input, the call connection function executes a call process for establishing a communication session with the other communication terminal device, and also sends advance notification information and Read the subscriber information, describe the read prior notification information in the body part, generate a MESSAGE request message with the read subscriber information as a destination, and send the generated MESSAGE request message to the communication network It is comprised as follows.
Therefore, by using the MESSAGE request message defined in the SIP call connection function, it is possible to send advance notification information from the calling party to the called party without being limited by the size of transmission information. Not only text data such as characters but also video data and audio data can be sent. As a result, the caller can inform the callee more clearly and in detail of his / her requirements prior to the call.

Another aspect of the present invention is characterized by further comprising the following various components.
The first component executes an incoming call process for establishing a communication session with the caller communication terminal device by the call connection function, and also sends a call sent from the caller communication terminal device. It receives the MESSAGE request message addressed to it, extracts the advance notification information from the received MESSAGE request message, and presents it to the speaker. By providing this component, when advance notification information is sent from the calling side by a MESSAGE request message, this advance notification information is presented to the speaker. Therefore, it is possible to clearly grasp the caller's requirements before answering the incoming call, which is very effective in repelling annoying calls.

  The second component detects an operation related to an incoming call by the speaker, determines whether the content of the operation related to the detected incoming call is an incoming call response or an incoming call rejection, If the discrimination result is an incoming call response, the incoming call processing by the call connection function is continued. On the other hand, if the discrimination result is an incoming call rejection, the call connection function executes a process for making the incoming call an incomplete call. It is something to be made. By providing this component, the called party can select whether to answer the incoming call or reject the incoming call based on the content of the prior notification information sent from the calling party.

  The third component accepts input of call rejection reason notification information indicating the reason of call rejection by the speaker, and describes the call rejection notification information in the body part when the determination result is call rejection. A MESSAGE request message destined for the subscriber information of the caller communication terminal device is generated, and the generated MESSAGE request message is transmitted to the communication network. By providing this component, when the callee rejects the incoming call, the detailed reason can be notified to the caller by the incoming call rejection reason notification information.

  When the length of the prior notification information or the incoming call rejection reason notification information exceeds a predetermined data length when the MESSAGE request message is generated, the fourth component element The incoming call rejection reason notification information is divided into a plurality of pieces, and a MESSAGE request message is generated for each of the divided information blocks. In this way, even when the information size of the prior notification information or the incoming call rejection reason notification information is large, it can be divided into a plurality of MESSAGE request messages and sent without omission.

  In the fifth component, the advance notification information and the incoming call rejection reason notification information are configured by at least one of text data, video data, and audio data. In this way, the contents of the advance notification information and the incoming call rejection reason notification information can be expressed more appropriately by using not only text data but also video and audio.

  In short, according to one aspect of the present invention, it is possible to provide a communication terminal device that can notify a message of a desired size between a calling party and a called party prior to a call.

Embodiments according to the present invention will be described below with reference to the drawings.
One embodiment of the present invention enables voice or videophone communication using a call control function based on SIP (Session Initiation Protocol (RFC3261)) between a plurality of communication terminals via a communication network.

  The communication network includes an IP (Internet Protocol) network represented by the Internet and an access network for accessing the IP network. The access network includes a wired public network, a mobile communication network, a LAN (Local Area Network), a wireless LAN, a CATV (Cable Television) network, and the like.

By the way, a communication terminal according to an embodiment of the present invention is configured as follows. FIG. 1 is a block diagram showing the configuration.
That is, the communication terminal includes a receiving unit (hereinafter referred to as an infrared remote control receiving unit) 1 that receives an infrared signal from an infrared remote controller (not shown), an application control unit 2, a message storage memory 3, and a call (SIP) control. Unit 4, audio processing unit 5, video processing unit 9, TCP (UDP) / IP processing unit 13, and network interface unit 15.

  The application control unit 2 comprehensively controls the operation of the terminal according to an application program stored in a ROM or the like. The call (SIP) control unit 4 executes a series of protocol processing related to call connection by SIP, and transmits / receives a SIP-related message to / from a communication partner of a communication partner with a TCP (UDP) / IP processing unit 13 and a network interface. This is performed via the unit 15.

  The voice processing unit 5 performs voice coding on the analog voice signal output from the microphone 7 according to G.711 and outputs the voice signal to the TCP (UDP) / IP processing unit 13, and transfers from the TCP (UDP) / IP processing unit 13. The encoded audio signal is decoded into an analog audio signal in accordance with G.711, and then the speaker 8 outputs a loud sound, and various audio data files are decoded and the speaker is notified to notify the user of the message and the reason for rejecting the incoming call. 8, the process of outputting a loud sound, the message output from the microphone 7 and the voice signal indicating the reason for rejecting the incoming call are digitized, and the digitized voice signal is stored in the message storage memory 3 via the application control unit 2. Processing, and echo cancellation processing between the microphone 7 and the speaker 8 and processing for adjusting the audio input level and output level. Run each one.

  The video processing unit 9 encodes the analog video signal output from the video camera 11 according to H.264 and outputs it to the TCP (UDP) / IP processing unit 13, and transfers from the TCP (UDP) / IP processing unit 13. The decoded encoded video signal is decoded into an analog video signal according to H.264 and then displayed on the monitor 12, and various video files and text files are decoded in order to notify the user of the request and the reason for rejecting the incoming call. The processing to be displayed on the monitor 12 and the video signal indicating the message output from the video camera 11 and the reason for rejecting the incoming call are encoded, and the video data generated by this encoding is stored in the message storage memory via the application control unit 2. 3 and the process of adjusting the brightness of each analog video signal are executed.

  The TCP (UDP) / IP processing unit 13 creates an IP packet including a SIP-related message received from the call (SIP) control unit 4 in accordance with an instruction from the call (SIP) control unit 4. Also, an IP packet including the encoded audio signal output from the audio processing unit 5 and an IP packet including the encoded video signal output from the video processing unit 9 are created. Then, these created IP packets are transferred to the network interface unit 15, and a communication network is transmitted from the network interface unit 15 according to TCP / IP (Transmission Control Protocol / Internet Protocol) or UDP / IP (User Datagram Protocol / Internet Protocol). Execute the process to send to.

  Further, the TCP (UDP) / IP processing unit 13 analyzes the IP packet received from the communication network via the network interface unit 15, performs TCP (UDP) / IP processing, and sends a SIP message included in the SIP IP packet. Processing for transferring to the call (SIP) control unit 4, processing for transferring the encoded audio signal inserted in the IP packet related to audio to the audio processing unit 5, and the encoded video signal inserted in the IP packet related to video Each process to be transferred to the processing unit 9 is executed.

  The network interface unit 15 converts the IP packet created by the TCP (UDP) / IP processing unit 13 into a transmission frame corresponding to, for example, Ethernet (registered trademark) by adding a MAC address or the like. For transmitting the packet to the communication network, and extracting the IP packet from the transmission frame corresponding to Ethernet (registered trademark) received from the communication network, and transferring the extracted IP bucket to the TCP (UDP) / IP processing unit 13 Are executed respectively.

  Incidentally, the application control unit 2 includes a product transmission / reception control unit 21 and an incoming call rejection transmission / reception control unit 22 as products of a new controller according to the present invention. Any of these control units is realized by causing a CPU (Central Processing Unit) to execute an application program.

  The message transmission / reception control unit 21 stores, in the message memory 3, a message indicating a call message input from an infrared remote controller (not shown) and a telephone number of another communication terminal as a call partner prior to calling. Let When a call request is input from the infrared remote controller, the message message and the telephone number are read from the message storage memory 3 and output to the call (SIP) control unit 4, and the call (SIP) control unit 4. In response to this, the output message message is described in the body part, and the creation and transmission of the MESSAGE request message with the output telephone number as the destination is instructed, and the calling flag is stored in the message storage memory 3 Let

  The message transmission / reception control unit 21 transfers the message message and the telephone number of the calling communication terminal from the call (SIP) control unit 4 among the MESSAGE request messages sent from the calling communication terminal. In this case, this message is stored in the message storage memory 3 together with the incoming call flag and the telephone number of the calling communication terminal. Then, text data and video data of the received message are supplied to the video processing unit 9 together with the telephone number of the communication terminal on the calling side or the corresponding caller name and displayed on the monitor 12. . At the same time, voice data of the above-mentioned message is supplied to the voice processing unit 5 and outputted from the speaker 8 as a voice message.

  The incoming call rejection transmission / reception control unit 22 associates the incoming call rejection reason message with the incoming call flag and the telephone number of the calling communication terminal when a message indicating the reason for incoming call rejection is input from the infrared remote controller. The data is stored in the storage memory 3. Then, the incoming call rejection reason message and the telephone number of the communication terminal on the calling side are output to the call (SIP) control unit 4, and the output incoming call rejection reason message is sent to the call (SIP) control unit 4. And instructing the creation and transmission of a MESSAGE request message addressed to the telephone number of the calling communication terminal that has been output.

  Further, the incoming call rejection transmission / reception control unit 22 sends an incoming call rejection reason message to the calling flag and the called side when the incoming call rejection reason message is included in the MESSAGE request message sent from the called communication terminal. The information is stored in the message storage memory 3 in association with the telephone number of the communication terminal. Then, the text data and the video data in the received incoming call rejection reason message are supplied to the video processing unit 9 together with the telephone number of the called communication terminal or the corresponding called party name and displayed on the monitor 12. . At the same time, the voice data of the incoming call rejection reason message is supplied to the voice processing unit 5 and output as a voice message from the speaker 8.

  The message storage memory 3 is composed of, for example, a flash memory. Each time a call is made or a call is made, for example, as shown in FIG. 2, a flag 31 for identifying whether the call is a call or a call, a telephone number 32 of the other party, a message and an incoming call rejection reason The message 33 is stored in association with each other. FIG. 2 illustrates a case where the business message is composed of text data, audio data, and video data, and the incoming call rejection reason message is composed of text data and audio data.

Next, the operation of the communication terminal configured as described above will be described.
(1) Notification of message at the time of outgoing call First, the following processing is performed in the communication terminal on the outgoing call side. 3 and 4 are flowcharts showing the processing procedure and processing contents.
That is, prior to making a call, the speaker operates the infrared remote controller to input text data representing a call request. The call terminal receives the infrared signal transmitted from the infrared remote controller by the infrared remote controller receiver 1 (step S11), and the text data represented by the received infrared signal is transmitted from the infrared remote controller receiver 1 to the application controller 2. Transfer (step S12). The message transmission / reception control unit 21 of the application control unit 2 stores the transferred text data in the message storage memory 3 as data constituting a message message (step S13). In addition, when the voice of the speaker is input by the microphone 7 or when the video imaged by the video camera 11 is input, the message transmission / reception control unit 21 of the application control unit 2 sends these audio data. The video data is also stored together with the message storage memory 3 as data constituting the message.

  Subsequently, the speaker inputs the telephone number of the other party's terminal by operating the infrared remote controller. The telephone terminal receives the infrared signal transmitted from the infrared remote controller by the infrared remote controller receiver 1 (step S14), and the telephone number represented by the received infrared signal is transmitted from the infrared remote controller receiver 1 to the application controller 2. Transfer (step S15). The message transmission / reception control unit 21 of the application control unit 2 stores the transferred telephone number of the call partner terminal in the message storage memory 3 (step S16).

  Now, assume that the speaker operates the infrared remote controller and inputs a call request in this state (step S17). The call terminal receives the infrared signal transmitted from the infrared remote controller by the infrared remote controller receiver 1 and transfers the call request represented by the received infrared signal from the infrared remote controller receiver 1 to the application controller 2 ( Step S18). Upon detecting the input of the call request, the message transmission / reception control unit 21 of the application control unit 2 reads the message message and the telephone number of the other party that are stored in advance from the message storage memory 3, and calls them (SIP ) Pass to control unit 4 to instruct execution of call processing (step S19). At the same time, the message transmission / reception control unit 21 of the application control unit 2 sets the call / incoming flag in the message storage memory 3 to the call / incoming flag corresponding to the previously stored message and the telephone number of the other party. "Call" is memorized. As a result, for example, as shown at 34 in FIG. 2, the calling / incoming flag stores the calling flag, 03-xxx-xxxx as the telephone number of the other party, and 1.txt as the message. , Business 1.aac and business 1.mpg are stored respectively.

  The call (SIP) control unit 4 first sends an INVITE request message including the telephone number of the other party as a destination to the TCP (UDP) / IP processing unit 13 for call connection with the other party (step S20). The TCP (UDP) / IP processing unit 13 adds the TCP (UDP) / IP header to the sent INVITE request message to form an IP packet, and transmits the IP packet from the network interface unit 15 to a communication network (not shown). .

  Subsequently, the call (SIP) control unit 4 inserts the above message into the body part of the MESSAGE request message defined by the SIP call connection control, and further includes the telephone number of the other party in the destination. The MESSAGE request message is sent to the TCP (UDP) / IP processing unit 13 (step S21). The TCP (UDP) / IP processing unit 13 adds a TCP (UDP) / IP header to the sent MESSAGE request message to form an IP packet, and transmits the IP packet from the network interface unit 15 to a communication network (not shown). .

On the other hand, processing is performed as follows in the communication terminal on the called side. 5 to 7 are flowcharts showing the processing procedure and processing contents.
That is, the communication terminal monitors the arrival of the INVITE request message in the standby state. In this state, when the network interface unit 15 receives the INVITE request message addressed to itself transmitted from the calling communication terminal (step S31), the TCP (UDP) / IP processing unit 13 transmits the INVITE request message to the INVITE request message. After removing the added TCP (UDP) / IP header, it is sent to the call (SIP) control unit 4. The call (SIP) control unit 4 transmits a 100 Trying message and a Ringing message to the communication network via the TCP (UDP) / IP processing unit 13 and the network interface unit 15 according to a normal call processing procedure (step S32). At this time, the application control unit 2 supplies the ringing tone data to the voice processing unit 5 and outputs the ringing tone from the speaker 8 (step S32).

  On the other hand, the communication terminal on the calling side operates as follows. That is, when the call (SIP) control unit 4 confirms the return of the 100 Trying message and the Ringing message in response to the previously transmitted INVITE request message from the communication terminal on the called side, the PRACK message is set to TCP (UDP) / IP. The data is transmitted to the communication network via the processing unit 13 and the network interface unit 15 (step S22). In this state, it is monitored whether the called communication terminal goes off-hook or rejects the incoming call (step S23).

  Subsequently, the called communication terminal operates as follows. That is, when the MESSAGE request message addressed to itself transmitted from the calling communication terminal is received by the network interface unit 15 (step S33), the TCP (UDP) / IP processing unit 13 is added to the MESSAGE request message. After the TCP (UDP) / IP header is removed, it is sent to the call (SIP) control unit 4. The call (SIP) control unit 4 passes a 200 OK response message to the received MESSAGE request message to the TCP (UDP) / IP processing unit 13. The TCP (UDP) / IP processing unit 13 generates an IP packet by adding a TCP (UDP) / IP header to the 200 OK response message, and transmits the IP packet from the network interface unit 15 to the communication network (step) S34).

  At the same time, the call (SIP) control unit 4 extracts the message message and the telephone number of the calling communication terminal from the received MESSAGE request message, and uses the extracted message message and telephone number as the application control unit 2. To pass. The message transmission / reception control unit 21 of the application control unit 2 stores the message message and the telephone number of the calling communication terminal together with the incoming call flag in the message storage memory 3 (step S35). As a result, for example, as shown at 35 in FIG. 2, an incoming call flag is stored, 06-xxxx-xxxx is used as the telephone number of the other party, message 2.txt, message 2.aac, Message 2.mpg is stored.

  Further, the message transmission / reception control unit 21 of the application control unit 2 reads the message message from the message storage memory 3, and among the message messages, the message 2.txt that is text data and the message that is video data. 2. The mpg is supplied to the video processing unit 9 together with the telephone number 06-xxxx-xxxx of the calling communication terminal and displayed on the monitor 12. Further, the message 2.aac, which is voice data, among the message messages is supplied to the voice processing unit 5 and the voice message is output from the speaker 8 (step S36). If the telephone number of the calling party is registered in a separately prepared telephone directory memory, the corresponding caller name is read from the telephone number memory, and the caller name is converted to the telephone number. Instead of this, it may be displayed on the monitor 12.

  Thus, the caller can call the caller's telephone number or call before performing the call answering operation using the message message and text message displayed on the monitor 12 and the voice message output from the speaker 8. It becomes possible to confirm the name and the call requirements.

  On the other hand, the communication terminal on the calling side operates as follows. That is, the call (SIP) control unit 4 confirms the return of a 200 OK response message for the previously transmitted MESSAGE request message from the callee communication terminal (step S22). Further, the operation of monitoring whether the called communication terminal goes off-hook or rejects the incoming call is continued (step S23).

(2) When the called party performs an incoming call response (off-hook) operation After the incoming call process and the message message output process are completed, the application control unit 2 performs an operation related to the incoming call. Whether an off-hook operation is performed by pressing an incoming call button or an incoming call rejection operation for rejecting an incoming call is monitored.

  Now, assume that the called party who has confirmed the message in this state presses the incoming call button (off-hook operation) on the infrared remote controller. When the infrared remote control receiving unit 1 confirms the off-hook operation based on the infrared signal sent from the infrared remote control (step S37), it notifies the application control unit 2 of the incoming call (off-hook) response (step S38). The application control unit 2 instructs the call (SIP) control unit 4 to go off-hook (step S39). The call (SIP) control unit 4 passes a 200 OK response message to the previously received INVITE request message to the TCP (UDP) / IP processing unit 13 in response to the off-hook instruction. The TCP (UDP) / IP processing unit 13 generates an IP packet by adding a TCP (UDP) / IP header to the 200 OK response message, and returns the IP packet from the network interface unit 15 to the communication network (step) S40).

  In this state, as described above, an off-hook operation is performed at the called communication terminal, and in response to this, a 200 OK response message for the INVITE request message is sent from the called communication terminal to the calling side communication terminal. It is assumed that the message has been sent to the terminal (step S24). Then, the call (SIP) control unit 4 of the calling communication terminal sends an ACK message to the received 200 OK response message via the TCP (UDP) / IP processing unit 13 and the network interface unit 15. To the communication terminal (step S25). Thus, a communication session is established with the called communication terminal, and thereafter, a call can be made with the called communication terminal via this communication session (step S26).

  On the other hand, the called communication terminal monitors the return of the ACK message from the calling communication terminal after transmitting the 200 OK response message. When the return of the ACK message is confirmed (step S41), a call can be made with the communication terminal on the calling side thereafter (step S42).

  FIG. 8 is a diagram showing a call processing sequence between the calling communication terminal and the called communication terminal when the called communication terminal performs an off-hook operation as described above.

(3) When the called party rejects the incoming call
On the other hand, when the called party rejects the incoming call at the called communication terminal, the following processing is performed.
That is, the called party operates the infrared remote controller and inputs a message indicating the reason for rejecting the incoming call. The call terminal on the called side receives the infrared signal transmitted from the infrared remote controller by the infrared remote controller receiver 1 (step S43), and the text data represented by the received infrared signal is received from the infrared remote controller receiver 1 by the application. The data is transferred to the control unit 2 (step S44). The incoming call rejection transmission / reception control unit 22 of the application control unit 2 stores the transferred text data in the message storage memory 3 as data constituting the incoming call rejection reason message (step S45). In addition, when the voice of the speaker is input through the microphone 7 or when the video captured by the video camera 11 is input, the application control unit 2 rejects the incoming voice data and video data. The reason message is stored in the message storage memory 3 as data constituting the message. As a result, as shown in 35 of FIG. 2, for example, rejection 2.txt and rejection 2.aac are stored as incoming rejection reason messages.

  Subsequently, the incoming call rejection transmission / reception control unit 22 of the application control unit 2 reads the incoming call rejection reason message from the message storage memory 3, passes this incoming call rejection reason message to the call (SIP) control unit 4, and instructs the incoming call rejection. (Step S46). The call (SIP) control unit 4 inserts the above-mentioned incoming call rejection reason message into the body part of the MESSAGE request message defined by the SIP call connection control, includes the telephone number of the other party in the destination, and includes this MESSAGE request message. This is sent to the TCP (UDP) / IP processing unit 13. The TCP (UDP) / IP processing unit 13 adds a TCP (UDP) / IP header to the sent MESSAGE request message to form an IP packet, and transmits the IP packet from the network interface unit 15 to the communication network (step) S47).

  Next, the call (SIP) control unit 4 sends a 403 response message to the TCP (UDP) / IP processing unit 13 as a response to the previously received INVITE request message. The TCP (UDP) / IP processing unit 13 causes the network interface unit 15 to transmit the transmitted 403 response message to the communication network (step S48).

  On the other hand, in response to the incoming call rejection, the calling communication terminal operates as follows. That is, when the network interface unit 15 receives the MESSAGE request message addressed to itself transmitted from the communication terminal on the calling side, the TCP (UDP) / IP processing unit 13 transmits the TCP (UDP) added to the MESSAGE request message. ) / IP header is removed and sent to the call (SIP) control unit 4. The call (SIP) control unit 4 passes a 200 OK response message to the received MESSAGE request message to the TCP (UDP) / IP processing unit 13. The TCP (UDP) / IP processing unit 13 generates an IP packet by adding a TCP (UDP) / IP header to the 200 OK response message, and transmits the IP packet from the network interface unit 15 to the communication network (step) S27).

  At the same time, the call (SIP) control unit 4 extracts an incoming call rejection reason message from the received MESSAGE request message, and passes the extracted incoming call rejection reason message to the application control unit 2 (step S27). The incoming call rejection transmission / reception control unit 22 of the application control unit 2 stores the incoming call rejection reason message in the corresponding area 33 of the message storage memory 3 (step S28). As a result, for example, as shown at 34 in FIG. 2, rejection 1.txt and rejection 1.aac are stored as incoming rejection reason messages.

  The incoming call rejection transmission / reception control unit 22 of the application control unit 2 reads out the incoming call rejection reason message from the message storage memory 3, and sends the rejection 1.txt, which is text data, of the incoming call rejection reason message to the caller side communication. Along with the telephone number 03-xxxx-xxxx of the terminal, it is supplied to the video processor 9 and displayed on the monitor 12. Further, the rejection 1.aac, which is voice data, of the incoming call rejection reason message is supplied to the voice processing unit 5 and output as a voice message from the speaker 8 (step S28). If the telephone number of the communication terminal on the called side is registered in a separately prepared telephone directory memory, the corresponding called party name is read from the telephone number memory and the called party name is read out. You may make it display on the monitor 12 instead of the said telephone number.

  Thus, the calling party confirms the reason why the called party rejected the incoming call based on the incoming call rejection reason message composed of text and video indicating the incoming call rejection reason displayed on the monitor 12 and the voice message output from the speaker 8. It becomes possible.

  Upon receiving the incoming call rejection reason message, the call (SIP) control unit 4 monitors the return of the 403 response message, which is a response to the previously transmitted INVITE request message, via the TCP (UDP) / IP processing unit 13. . When the return of the 403 response message is confirmed (step S29), an ACK message corresponding to the 403 response message is passed to the TCP (UDP) / IP processing unit 13, and the network interface unit 15 is transmitted from the TCP (UDP) / IP processing unit 13. Is returned to the communication network via the network (step S30). Then, after the transmission of the 403 response message, the calling communication terminal returns to the standby state.

On the other hand, the call (SIP) control unit 4 of the called communication terminal confirms the reception of the 200 OK response message which is a response to the transmission of the MESSAGE request message in which the incoming call rejection reason message is inserted, and further the 403 response After confirming the return of the ACK message from the calling communication terminal after the transmission of the message (step S49), it returns to the standby state.
FIG. 9 is a diagram showing a call processing sequence between the calling communication terminal and the called communication terminal when the called communication terminal performs an incoming call rejection operation as described above.

  As described above, in this embodiment, in the communication terminal on the calling side, the message indicating the message of the call prior to the call and the telephone number of the communication terminal serving as the call partner are input to the message storage memory 3. Remember. Then, when the call is made, the message message and the telephone number are read out from the message storage memory 3, and the read message message is described in the body part and a MESSAGE request message is generated with the read telephone number as the destination. Then send. On the other hand, in the called communication terminal, the message is extracted from the MESSAGE request message sent from the calling communication terminal, and this message is called the call flag and the telephone number of the calling communication terminal. At the same time, it is stored in the business memory 3. Then, text data and video data of the received message message are displayed on the monitor 12, and voice data of the message message is output from the speaker 8 as a voice message.

  Therefore, at the time of the incoming call, the speaker uses the message of the text and video displayed on the monitor 12 and the voice message output from the speaker 8 before the incoming call response operation. Can be confirmed. In addition, since the message message is transmitted using the MESSAGE request message defined by SIP, even if the message message is long text data, it also includes audio data and video data. Can be transmitted.

  Further, in this embodiment, when a message indicating an incoming call rejection reason is input to the called communication terminal, the incoming call rejection reason message is stored in the message storage memory 3 and the incoming call rejection reason message is stored in the body. A MESSAGE request message described in the section and addressed to the telephone number of the calling communication terminal is generated and transmitted to the calling communication terminal. On the other hand, the calling communication terminal stores the incoming call rejection reason message in the message storage memory 3 when the incoming call rejection message is included in the MESSAGE request message sent from the called communication terminal. At the same time, text data and video data of the received call rejection reason message are displayed on the monitor 12, and voice data of the call rejection reason message is output from the speaker 8 as a voice message.

  Therefore, the caller can confirm the reason why the callee rejected the incoming call based on the message and text message indicating the reason for rejecting the incoming call displayed on the monitor 12 and the voice message output from the speaker 8. It becomes possible. Moreover, in this case as well, since the incoming call rejection reason message is transmitted using the MESSAGE request message defined by SIP, even if the incoming call rejection reason message is long text data, audio data or video Even data including data can be transmitted.

  The present invention is not limited to the above embodiment. For example, when the MESSAGE request message is generated, the length of the message or the reason for rejecting the incoming message is a predetermined data length, for example, the limit length of the data size that can be transmitted by one MESSAGE request message. When the message exceeds 3 Kbytes, the message or incoming call rejection reason message may be divided into a plurality of data blocks, and a MESSAGE request message may be generated and transmitted for each of the divided data blocks. However, in this case, information representing the relationship between the message identification code and the data block such as a serial number and a time stamp is inserted into the header or message of each MESSAGE request message. In this way, even if the information size of the message message or the call rejection reason message is large, it can be divided into a plurality of MESSAGE request messages and sent without omission, and the original message message is received at the receiving communication terminal. Alternatively, the incoming call rejection reason message can be reliably reconstructed.

  In the previous embodiment, the case where the speaker inputs the message message and the call rejection reason message each time has been described as an example. However, a plurality of types of message messages and call rejection reason messages expected to be used are preliminarily processed. Stored in the storage memory, when making a call or rejecting an incoming call, the speaker selects the desired message from the multiple types of message and the call rejection reason message stored in the message storage memory. You may make it do.

In the embodiment, the business message and the incoming call rejection message are expressed by text data, video data using moving images, and audio data. However, the present invention is not limited thereto, and any one or two of the text data, the video data, and the audio data may be selectively used to express the message message and the incoming call rejection message. . Of course, image data such as a still image encoded by JPEG or the like may be used instead of video data.
In addition, the type and configuration of the communication terminal device, the processing procedure and the processing content of the transmission / reception control of the business message and the incoming call rejection reason message can be variously modified without departing from the gist of the present invention.

  In short, the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Further, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine suitably the component covering different embodiment.

It is a block diagram which shows the structure of the communication terminal concerning one Embodiment of this invention. It is a figure which shows an example of the memory | storage information of the business memory provided in the communication terminal shown in FIG. It is a flowchart which shows the first half part of the process sequence at the time of the outgoing call in the communication terminal shown in FIG. FIG. 3 is a flowchart illustrating a processing procedure at the time of a call in the communication terminal illustrated in FIG. It is a flowchart which shows the process procedure at the time of the incoming call in the communication terminal shown in FIG. 1, and the first half part of the processing content. 3 is a flowchart showing a processing procedure and processing contents when an off-hook operation is performed in the latter half of the processing procedure and processing contents at the time of an incoming call in the communication terminal shown in FIG. 1. 2 is a flowchart showing a processing procedure and processing contents when an incoming call rejection operation is performed in the latter half of processing procedures and processing contents at the time of an incoming call in the communication terminal shown in FIG. 1. It is a sequence diagram which shows the call processing procedure between the communication terminals when off-hook operation is performed in the communication terminal of the callee side. It is a sequence diagram showing a call processing procedure between communication terminals when an incoming call rejection operation is performed in a communication terminal on the called side.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Infrared remote control receiving part, 2 ... Application control part, 3 ... Message storage memory, 4 ... Call (SIP) control part, 5 ... Audio processing part, 7 ... Microphone, 8 ... Speaker, 9 ... Video processing part, 11 ... Video camera, 12 ... Monitor, 13 ... TCP (UDP) / IP processing unit, 15 ... Network interface unit, 21 ... Message transmission / reception control unit, 22 ... Incoming call rejection transmission / reception control unit, 31 ... Calling / incoming flag 32 ... Telephone number of the other party, 33 ... Reason for reason / rejected call, 34 ... Example of stored information in the message storage memory of the communication terminal on the calling side, 35 ... In the message storage memory of the communication terminal on the called side An example of stored information.

Claims (6)

A communication terminal device that has a call connection function using SIP (Session Initiation Protocol) and establishes a communication session with another communication terminal device via a communication network by this call connection function, and performs communication. ,
Prior to making a call, prior notification information including a request for a call and input of subscriber information for specifying another communication terminal device as a call partner are received, and means for storing each received information in a memory;
Means for receiving an input of a call request;
Means for executing a call process for establishing a communication session with the other communication terminal device by the call connection function when receiving an input of the call request;
The MESSAGE request defined in the SIP call connection function, which reads the prior notification information and the subscriber information from the memory, describes the read prior notification information in the body part, and has the read subscriber information as the destination Means for generating a message;
A communication terminal apparatus comprising: means for transmitting the generated MESSAGE request message to the communication network. Means for executing an incoming call process for establishing a communication session with the caller communication terminal device by the call connection function;
Means for receiving a MESSAGE request message addressed to itself sent from the communication terminal device of the calling source;
The communication terminal apparatus according to claim 1, further comprising means for extracting prior notification information from the received MESSAGE request message and presenting it to a speaker. Means for detecting an operation related to an incoming call by the speaker and determining whether the content of the detected operation related to the incoming call is an incoming call response or an incoming call rejection;
If the determination result is an incoming call response, the incoming call processing by the call connection function is continued. If the determination result is an incoming call rejection, the call connection function performs a process for making the incoming call an incomplete call. The communication terminal apparatus according to claim 2, further comprising: Means for accepting input of incoming call rejection reason notification information indicating a reason for incoming call rejection by the speaker;
When the determination result is call rejection, the SIP call connection function is defined in which the call rejection reason notification information is described in a body part and the subscriber information of the caller communication terminal device is the destination. Means for generating a generated MESSAGE request message;
4. The communication terminal apparatus according to claim 3, further comprising means for transmitting the generated MESSAGE request message to the communication network.   The means for generating the MESSAGE request message, when the length of the advance notification information or the incoming call rejection reason notification information exceeds a predetermined data length, the advance notification information or the incoming call rejection reason notification information The communication terminal apparatus according to claim 1, wherein a MESSAGE request message is generated for each of the divided information blocks.   6. The communication terminal apparatus according to claim 1, wherein the advance notification information and the incoming call rejection reason notification information are configured by at least one of text data, video data, and audio data.

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