JP3381856B2 - Message transfer processing method and transfer terminal - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a message transfer processing method, and in particular, in a call control procedure between communication terminals via an exchange, exchange of user / user information on various messages for call control. The present invention relates to a message transfer processing method of message communication in which a user or user information is connected to a possible communication network and a message of a caller or a callee is put on the information.

[0002]

2. Description of the Related Art Conventional message transmission in absence and non-immediate message communication have been performed by forming a communication path between communication terminals and then using the communication path as seen in an answering machine.
That is, when a call is received when the called terminal is absent, it automatically responds to form a communication path, receives and stores a message from the caller, and sends a reply message to the caller if necessary.

On the other hand, ISDN (integrated servise digital
In the case of exchanging user / user information in a call control procedure, paying attention to the fact that a very low communication charge is imposed when transmitting user / user information in the control procedure for call connection. In the absence of message transmission and non-immediate message communication, there is no need to form a so-called communication path, that is, without forming an information channel for exchanging information between communication terminals, and communication terminals and exchanges. It is now possible to carry out the control procedure relating to the call connection on the signal channel for exchanging the call control information between the communication terminal and the communication terminal or between the communication terminals.

However, when the transmission destination from the caller is a transfer terminal, a signal channel is connected between the transfer destination communication terminal from the transfer terminal and the transmission source communication terminal from the transfer terminal. Since it is not performed, the message from the source cannot be transmitted to the transfer destination in the control procedure related to the call connection on the signal channel.

In a transfer communication via a conventional transfer terminal represented by a transfer telephone, as shown in FIG. 9, a communication path forming processing loop CONT for forming a communication path between a communication terminal on the calling side and a communication terminal on the called side. And was performed using the communication path formed thereby.

[0006]

[Problems to be Solved by the Invention] As shown above,
In the conventional message communication, when a message is transmitted and received using the communication path after the communication path is formed, even if the message has an extremely short communication time, a communication charge of once or more is charged. Atsuta Also, when using ISDN,
Although it is possible to send and receive messages in the control procedure for call connection on the signal channel without forming a communication path,
In the case where a transfer terminal is interposed, there is a drawback in that the message from the sender, which is included in the call control information, cannot be transferred to the transfer destination.

Therefore, the present invention firstly proposes a control procedure and a user interface for call connection defined in CCITT's I series recommendation.
In the control procedure related to the call connection on the signal channel for transmitting / receiving the call control information without forming a so-called communication path even when the transfer terminal is used to transfer the user information. It is to provide a message transfer processing method that enables transmission and reception of a message between a transmission source and a transfer destination from a transfer terminal.

In the conventional transfer communication, a communication channel is formed between the communication terminals on the calling side and the receiving side, and then the communication path is used. Therefore, even when sending and receiving a message whose communication time is extremely short, a communication charge of one or more times is required between the communication terminal on the sending side and the transfer terminal and between the transfer terminal and the communication terminal on the receiving side. There was a drawback to be imposed.

Further, if the called party does not respond, it cannot distinguish whether the transfer communication from the calling party requires a voice conversation or requires transmission / reception of an extremely short message. It was

[0010] Secondly, in the case of transfer communication via a transfer terminal, a so-called communication path is used by utilizing the control procedure for call connection defined in CCITT's I series recommendation and the form of exchanging user / user information. Require the sending and receiving of very short messages before being formed, allowing the transfer communication from the caller to be able to determine whether they require voice interaction or whether they require sending and receiving very short messages In this case, in the control procedure related to the call connection on the signal channel for transmitting / receiving the call control information without forming a so-called communication path, the message between the caller and the callee is transmitted. It is to provide a message transfer processing method that enables transfer.

[0011]

In order to solve such a problem, in the present invention, the transfer terminal receives the message of the caller transmitted from the calling terminal on the first call setting message, and the second The call setting message and the first disconnection message (or the call setting message) are transmitted to the receiving terminal while being placed on the call setting message of
The message of the callee transmitted from the receiving terminal on the terminal is received, and the message is transmitted to the calling terminal on the second disconnection message (first disconnection message).

[0012]

[0013]

[0014]

[0015]

[0016]

[0017]

[0018]

[0019]

[0020]

[0021]

[0022]

[0023]

The present invention provides the following operational effects with the construction of the embodiment. In order to respond to a specific incoming call when it is not possible to answer, such as when you are absent or when you cannot release your hand (hereinafter referred to as "response not possible"), at the called communication terminal (hereinafter referred to as the called terminal). When the call setting message is received at the time of "response not possible", the call setting is set so that the calling message is sent and then the disconnecting message can be sent immediately.

When a caller originates a call from a communication terminal on the caller side (hereinafter referred to as a caller terminal), the caller sends out a call setting message in which a message to be delivered is included in user / user information using a signal channel. Upon receiving the call setup message from the calling terminal, the transfer terminal extracts the user / user information from the call setup message, puts the user / user information on the new call setup message, and sends it to the predetermined caller terminal (hereinafter called Call the terminal).

At this time, the transfer terminal sends a calling message to the calling terminal and continues the calling state. When the called terminal receives the above call setup message via the signal channel, it extracts the user-user information from this call setup message. When the message of the sender is extracted from the user / user information, the calling message and the disconnecting message are continuously sent to the transfer terminal. One or both of the calling message and the disconnecting message are accompanied by a message of the called party, that is, a confirmation of receipt of the message from the calling party and a message of their own reply and sent.

The transfer terminal receives the calling message and the disconnecting message, and extracts the receipt confirmation and the reply message from the callee. Then, the transfer terminal shifts to the disconnection procedure without forming an information channel with the called terminal. Further, the transfer terminal sends a disconnection message to the calling terminal in order to cancel the calling state and shift to the disconnected state.
In this disconnection message, the receipt confirmation of the message from the caller sent from the receiving terminal and the reply message from the callee are sent as user / user information.

The calling terminal receives, as user / user information, the receipt confirmation of the message from the caller sent from the called terminal via the transfer terminal and the reply message from the called party as user / user information. The release message and release completion message are exchanged to release the signal channel, and the message communication ends.

When a sender sends and receives a message in a relatively short sentence, when making a call from a communication terminal on the calling side (hereinafter referred to as a calling terminal), a message to be delivered is added to user / user information. The call setup message is sent using the signal channel. Upon receiving the call setup message from the calling terminal, the transfer terminal extracts the user / user information from the call setup message, puts the user / user information on the new call setup message, and sends it to the predetermined caller terminal (hereinafter called Call the terminal).

At this time, the transfer terminal sends a calling message to the calling terminal and continues the calling state. When the called terminal receives the above call setup message via the signal channel, it extracts the user-user information from this call setup message. Then, the message of the caller is extracted and recorded from the user / user information, and it is determined whether the message of the caller requests voice communication or expects to give and receive a message in a relatively short sentence. Reply "Determine whether to return the message.

When it is determined that the message of the caller requires voice conversation, a response message is returned and the control procedure for normal transfer communication as shown in FIG. 8 is entered. When it is determined that the caller's message is expected to be exchanged in a relatively short message, the call message is sent to the transfer terminal without returning the response message. The message of the called party, that is, the receipt confirmation of the message from the calling party and the message of his own reply are sent and sent to this calling message.

The transfer terminal receives this calling message and extracts the message of receipt confirmation and reply from the callee. Then, the transfer terminal shifts to the disconnection procedure without forming an information channel with the called terminal. Further, the transfer terminal sends a disconnection message to the calling terminal in order to cancel the calling state and shift to the disconnected state. In this disconnection message, the receipt confirmation of the message from the caller sent from the receiving terminal and the reply message from the callee are sent as user / user information.

The calling terminal receives, as user / user information, the receipt confirmation of the message from the caller sent from the called terminal via the transfer terminal and the reply message from the called party as user / user information. The release message and release completion message are exchanged to release the signal channel, and the message communication ends.

[0033]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a message transfer processing method according to the present invention will be described in detail with reference to the drawings.

(1) First Embodiment In FIG. 1, 1 denotes a communication system as a whole, and IS
By carrying user information on a call control signal via a communication network 2 such as a DN network, message communication is realized between a calling terminal 3 and a called terminal 4 via a transfer terminal 5. It is an example of composition of the message transfer system using the message transfer processing method concerning the present invention in a case.

The transmitting terminal 3 according to the present invention comprises call setting message sending means, call message receiving means, disconnection message receiving means, release message sending means, and release completion message receiving means. The receiving terminal 4 is composed of a call setting message receiving means, a calling message transmitting means, a disconnecting message transmitting means, a release message receiving means, and a release completion message transmitting means.

Further, the transfer terminal 5 performs call control processing with the calling terminal 3 by receiving a call setting message, a calling message sending means, a disconnecting message sending means, a release message receiving means, and a release completion message. And a means for sending a call setting message, a means for receiving a calling message, and a call control processing with the receiving terminal 4.
It has a disconnection message receiving means, a release message sending means, and a release completion message receiving means.

Further, the transfer terminal 5 has means for setting a "transfer" state, means for transferring user / user information on the call setting message from the calling terminal 3 to the call setting message for the receiving terminal 4, and the receiving terminal 4 From the calling message and the disconnection message, or means for transferring the user / user information on the disconnection message to the disconnection message to the transmitting terminal 3.

The transmitting terminal 3 in this embodiment has a CPU 11 for executing a control program as shown in FIG. 2 and a CPU 11 including a data bus, an address bus, a control bus and the like.
System bus 12 and ROM storing the control program
A control program memory 13 having a configuration, a message memory 14 having a RAM configuration for storing a call setting message to be sent and a release message, and a user setting in the call setting message.
A message memory 15 having a RAM structure for storing a message to be carried as user information, a message of a callee who has reached a disconnection message as user / user information, and an operation unit 16 for dial operation or creating a message of oneself. Display 1 that displays messages from the callee, your own message, etc.
7 and a calling unit 18 that generates a ringing tone when an incoming call is received,
It is composed of a communication path 19 which is an information channel and a network interface section 20 for the ISDN network.

Similarly to the transmitting terminal 3, the receiving terminal 4 in this embodiment has the same configuration as the transmitting terminal 3 as shown in FIG. 3, which is represented by the reference numeral with the suffix R added to the portion corresponding to FIG. Message memory 14R and message memory 15R
Is used as follows.

The message memory 14R stores a calling message, a disconnection message, and a release completion message. Further, in the message memory 15R, confirmation of receipt of a message to a caller to be put on a call message or disconnection message as user / user information, and his / her own message and a message from a caller who arrives at a call setting message as user / user information. Remember.

Further, the transfer terminal 5 in this embodiment is
CPU 21 that executes the control program as shown in FIG.
And a data bus, address bus, control bus, etc.
The system bus 22 of the CPU 21, the control program memory 23 of the ROM configuration storing the control program, the call message, the disconnection message and the release completion message sent to the calling terminal 3 and the call setting message and the release message sent to the called terminal 4. A message memory 24 having a RAM configuration for storing a message, a message from a caller who arrives by accumulating the call setting message from the calling terminal 3 as user / user information, and a call message or a disconnect message from the called terminal 4. A message memory 25 having a RAM structure for storing a message of a called party who has arrived as user information.
An operation unit 26 for designating a caller to whom information is to be transferred and a transfer destination, a display unit 27 for displaying a caller and a transfer destination to which information is to be transferred, and a call for making a ringing tone when receiving a call. Section 28, communication channel 29 and communication channel 30 which are information channels, and communication channel 29 and communication channel 3 for transfer.
It is composed of a connection unit 31 for connecting 0s and a network interface unit 32 for the ISDN network.

Here, the ISDN network is a D channel which is a signal channel for transmitting and receiving call control signals such as a call setting message, a calling message, a response message and a disconnecting message at the time of making and receiving a call, and information transmission between terminals. B1 channel and B2, which consist of two information channels for performing
Providing channels to communication terminals. Further, the call setting message, the calling message, the response message, and the disconnecting message include user-user information that can be used by the user to exchange information between communication terminals as one of the information elements.

The network interface unit 32 separates and combines the D channel as a signal channel provided by the ISDN network and the B1 channel and the B2 channel as two information channels, and the CPU 2 via the D channel.
A call control signal is transmitted to and received from Information is exchanged between terminals with the communication channel 29 or 30 including a CODEC, a transmitter, a receiver, etc. via the B1 channel or the B2 channel.

Next, regarding the operation of the calling terminal 3 and the called terminal 4 using the communication processing method capable of realizing the message communication according to the present invention, the connection between the calling terminal 3, the transfer terminal 5 and the called terminal 4 shown in FIG. The control procedure and the flow chart showing the control procedure of the transmitting terminal 3, the transfer terminal 5 and the receiving terminal 4 shown in FIGS. 6, 7 and 8 will be referred to and the flow chart will be described accordingly. In FIG. 5, a calling terminal 3, a transfer terminal 5 and a called terminal 4 to which a transfer processing method capable of realizing message communication according to the present invention is applied.
The connection control procedure between is shown. That is,

(A1) The calling terminal 3 sends a call setting message in which the message of the caller is included in the user / user information at the time of calling. (B1) When the transfer terminal 5 receives this call setting message, it decodes the user / user information of this call setting message and puts the user / user information on the predetermined call setting message to the specific receiving terminal 4. To send.
Further, a calling message is sent to the calling terminal 3 to continue the calling state. (C1) When the receiving terminal 4 receives this call setting message, it decodes the user / user information on this call setting message, and if it is read that there is a message from the caller, the "disconnected state" is set. Immediately after setting and sending the calling message, the disconnecting message is sent. Either or both of the calling message and the disconnecting message or both of the user and user information are sent with confirmation of receipt of a message from the sender and a message from the receiver.

(D1) When the transfer terminal 5 receives the call message and the disconnection message, it decodes the user / user information on the call setting message, and the receiving terminal 4
The release channel and the release complete message are exchanged with and to disconnect the signal channel. Further, the calling terminal 3 releases the calling state by confirming the receipt of the message from the caller received from the callee terminal 4 and sending a disconnection message carrying the message from the callee as user / user information. Subsequently, the release message and the release completion message are transmitted and received, and the series of connection control procedures is ended. (E1) When the calling terminal 3 receives the disconnection message from the transfer terminal 5 and receives the message of the called party carried on the user / user information, the release message and the release completion message are exchanged to end the series of connection control procedures. To do.

As described above, in the message transfer processing method according to the present invention, when the receiving terminal 4 receives a message from the caller,
After sending the calling message, the disconnecting message is continuously sent. Further, the transfer terminal 5 sends a disconnection message to the calling terminal 3 to cancel the calling state when the caller's message or the disconnection message from the receiving terminal 4 contains a message from the callee.

That is, the connection control procedure between the transmitting terminal 3 and the transferring terminal 5 and between the transferring terminal 5 and the receiving terminal 4 is IS.
Among the connection control procedures of the DN, as shown in FIG. 9, it is possible to utilize a special procedure different from the connection control procedure for the purpose of performing general communication using the information channel so that the calling message can be used. It is now possible to send a disconnect message after sending.

As a result, it is possible to realize the message communication on the signal channel without connecting the information channel. The calling terminal 3 (FIG. 2) is the calling processing means R shown in FIG.
Execute T1. At the time of calling, the CPU 11 makes a step SP in FIG.
1, the caller's message sent on the call setting message stored in the message memory 15 is extracted, placed on the user / user information of the call setting message stored in the message memory 14, and sent to the callee via the network interface. It is sent to the D channel of the ISDN network via the ace unit 20. Subsequently, the CPU 11 receives the call message sent as a return of the call setting message at step SP2 via the D channel of the ISDN network, and shifts to the call state at step SP3.

At step SP4, a disconnection message in which the message of the incoming caller sent subsequently is carried as user / user information is received, and at step SP5, the message is stored in the message / user information of the message memory 15. Storing area Then the CPU 11 goes to step S
At P6, the release message stored in the message memory 14 is extracted and sent to the above-mentioned called terminal through the network interface unit 20, and in response to this, the release completion message is received at Step SP7, and at Step SP8 the series of the release is received. Complete the connection control procedure.

Next, the operation of the transfer terminal 5 shown in FIG. 4 will be described using the flow chart of FIG. At the time of the incoming call, the CPU 21 of the transfer terminal 5 (FIG. 4) enters the incoming call processing procedure RT2 of FIG. 7, and at step SP11, the call setting message in which the message of the caller is carried from the calling terminal 3 as the user / user information. To receive. For the sending terminal 3,
Return message memory 2 at step SP12
The call interface message stored in 4 is transferred to the network interface unit 3
Send to D channel of ISDN network via 2
A transition is made to the state where the step SP13 is being called. At this time, in step SP14, the CPU 21 extracts and decodes the message of the caller from the user / user information of the call setting message for the destination terminal 4 of the transfer destination, and the message memory 2
It records in 5, and prepares to make a call in step SP15.

Subsequently, in step SP16, the CPU 21 sends the call setting message stored in the message memory 24 to the receiving terminal 4 via the network interface section 32 to the D channel of the ISDN network. At this time, the message memory 25 is received in step SP11.
The message of the caller already recorded in is sent as user / user information.

Then, in step SP17, the calling message and the disconnecting message continuously sent from the receiving terminal 4 are received. One or both of the calling message and the disconnecting message, the message from the called party,
That is, the receipt confirmation for the transferred message and the message of the recipient itself are carried as user / user information.

Further, in step SP18, the CPU 21 extracts and decodes the message of the called party from the received call message or disconnection message and records it in the message memory 25. Subsequently, in step SP19, the CPU 21 extracts the release message stored in the message memory 24 for the called terminal 4 and sends it to the called terminal 4 via the network interface unit 32. In step SP20, the release completion message is sent as the return message. In step SP21 after receiving, the series of connection control procedures are completed.

Regarding the calling terminal 3 in the calling state, the CPU 21 sends a disconnection message containing user's user information with a message from the called party, which has been received in step SP18 and recorded in the message memory 25, in step SP22. Send out. Subsequently, the CPU 21 receives the release message sent as a reply to the disconnection message for the calling terminal 3 at step SP23,
In return, the release completion message stored in the message memory 24 is sent in step SP24, and then a series of connection control procedures are completed in step SP25.

On the other hand, the receiving terminal 4 executes the connection control procedure shown in FIG. 8, and in order to respond to the incoming call when it is not available, such as when the user is absent or when he cannot release his hand, the terminal of FIG. In step SP31, when the call setting message is received, the call message is sent out and then the disconnection message can be sent out immediately, that is, the "disconnect" state is set.

Thereafter, when an incoming call is made at step SP32, the network interface section 20R causes the step SP33.
In the IS, the call setup message containing the message from the caller is sent as the user / user information delivered from the transfer terminal 5.
It is received via the D channel of the DN network, and this call setting message is sent to the CPU 11R. The CPU 11R which has received this call setting message decodes the message from the caller sent by accommodating this user / user information in step SP34, and the user user who gets on the call setting message received at the time of receiving the message memory 15R. Store in the area for storing information.

Subsequently, the CPU 11R sends the calling message and the disconnecting message stored in the message memory 14R from the step SP35 to the step SP40. At this time, any of the following three methods can be selected as the confirmation of receipt of the message from the caller stored in advance in the message memory 15R and the method of adding the message of the callee itself. That is, when the steps SP35 and SP36 are used, the receipt confirmation of the message from the caller and the message of the callee are put on the calling message. When the steps SP37 and SP38 are used, they are placed on the cutting message. Also, step SP39 and step SP4
If 0 is used, it will be placed on both the calling and disconnecting messages.

Next, in step SP41, the release message is received, and in step SP42, the release completion message stored in the message memory 24 is sent out, and then in step SP43, the series of connection control procedures are completed. Note that by adding the personal authentication information of the sender to the message of the sender, the recipient of the transfer destination can utilize the personal authentication information of the sender to confirm the response to the message of the sender. It goes without saying that various contents can be selected.

(2) Second Embodiment A communication system to which a second embodiment of the message transfer processing method according to the present invention is applied is the same as that described in the first embodiment, and the communication network 2 such as ISDN network is used. Has a calling terminal 3, a called terminal 4 and a transfer terminal 5 which are connected to each other via a terminal. The called terminal 3, the called terminal 4 and the transfer terminal 5 are hardware-implemented with reference to FIG. 2, FIG. 3 and FIG. It is configured differently from the example. First, FIG. 10 shows a connection control procedure between a transmission terminal, a transmission terminal and a reception terminal to which a transfer processing method capable of realizing message communication according to the second embodiment of the present invention is applied.

(A2) The calling terminal 31 (FIGS. 1 and 2) sends a call setting message in which the message of the caller is added to the user / user information at the time of calling. (B2) When the transfer terminal 5 (FIGS. 1 and 2) receives the call setting message, it decodes the user / user information of this call setting message to determine a predetermined specific receiving terminal 4
The above-mentioned user / user information is added to the call setting message to (FIGS. 1 and 3) and transmitted. Further, a calling message is sent to the calling terminal 3 to set the calling state, and the call is continued.

(C2) When the receiving terminal 4 receives the call setting message, it decodes the user / user information on the call setting message, and there is a message from the caller, and the message requests a voice dialogue. If the sender's message expects to send / receive a relatively short message, the answer message is not returned. , The call message including the message of the callee, that is, the receipt confirmation of the message from the caller and the message of the user's reply is sent to the transfer terminal.

Here, when it is determined that the message of the caller requests the voice conversation, the response message is returned and the normal operation as shown in the processing loop CONT (processing procedure surrounded by a broken line) in FIG. 9 is performed. Move to the transfer communication control procedure. (D2) When the transfer terminal 5 receives this call message, it decodes the user / user information on the call setting message and exchanges a disconnect message, a release message, and a release completion message with the receiving terminal 4. Disconnect the signal channel. The calling terminal 3 releases the calling state by confirming receipt of the message from the caller received from the call receiving terminal 4 and sending a disconnection message carrying the message from the callee as user / user information. Subsequently, the release message and the release completion message are exchanged, and a series of connection control procedures are ended.

(E2) When the calling terminal 3 receives the disconnection message from the transfer terminal 5 and receives the message of the called party carried on the user / user information, it sends and receives a release message and a release completion message to perform a series of connection control. Finish the procedure. Thus, in the message transfer processing method according to the present invention,
When the receiving terminal 4 determines that there is a message from the caller and that the message is expected to be sent / received in a relatively short message, it confirms receipt of the message of the callee in the calling message, that is, the message from the caller. And the message of his reply are sent and sent to the transfer terminal 5. Thus, the response message following the calling message in the normal transfer communication control procedure as shown in FIG. 9 is not returned.

When the call message from the receiving terminal 4 includes a message from the called party, the transfer terminal 5 sends a disconnecting message to the receiving terminal 4 without waiting for a response message from the receiving terminal 4, and then releases the message. And the release completion message are exchanged, and a series of connection control procedures are ended.

Among the ISDN connection control procedures, the connection control procedure between the calling terminal 3 and the transfer terminal 5 is a connection control procedure intended for normal communication using the information channel shown in FIG. It allows the use of a special procedure different from, which allows the sending of a paging message followed by the sending of a disconnect message.

Thus, message communication can be realized on the signal channel without connecting the information channel. Next, regarding the transmitting terminal 3 described above with reference to FIG.
The operation will be described with reference to the flow chart of FIG.

At the time of calling, the calling processing routine RT1 shown in FIG.
In step SP51 of FIG. 11, the CPU 11 (FIG. 2) of the calling terminal 3 which has entered 1 pulls out the message of the caller to be sent on the call setting message stored in the message memory 15 and stores it in the message memory 14. The user / user information of the call setting message is added to the ISDN via the network interface unit 20 toward the destination, that is, the transfer terminal 5.
It is sent to the D channel of the network. Next, CPU 1
1 receives the call message sent as a reply to the call setup message in step SP52 via the D channel of the ISDN network, and step SP53
To the calling state of.

At step SP54, a disconnection message sent from the transfer terminal 5 and containing the message of the called party as the transfer destination, which is carried as user / user information, is received at step SP55. It is stored in the area for storing the user information of the user. Then, in step SP56, the CPU 11 retrieves the release message stored in the message memory 14 and transfers it to the transfer terminal 5 via the network interface unit 20.
After receiving the release completion message in step SP57 as its return, the series of connection control procedures are completed in step SP58.

On the other hand, the CPU 1 of the transfer terminal 5 (FIG. 4)
At the time of an incoming call, 1 enters the incoming call processing routine RT12 of FIG. 12, and in step SP61, the call setting message in which the message of the caller is carried as the user / user information is received from the calling terminal 3. Regarding the sending terminal 3, the CPU 21
Return message memory 1 at step SP62
The call message stored in No. 4 is transferred to the network interface unit 2
Send to D channel of ISDN network via 0,
In step SP63, the state transits to the calling state. On the other hand, the CPU 2
In step SP64, 1 extracts and decodes the message of the caller from the user / user information of the call setting message, records it in the message memory 15, and prepares for calling in step SP65.

Then, in step SP66, the CPU 21 sends the call setting message stored in the message memory 24 to the receiving terminal 4 via the network interface 32 to the D channel of the ISDN network. At this time, the CPU 21 sends the message of the caller, which has already been received and recorded in the message memory 25 at step SP61, as user-user information.

Then, in step SP67, the CPU 21 receives the call message sent from the receiving terminal 4. In the call message, when performing message communication, a message from the callee, that is, confirmation of receipt of the transferred message and the message of the callee itself are carried as user / user information.

Further, in step SP68, the CPU 21 extracts the message from the called party from the received call message, records it in the message memory 25, and deciphers whether or not to carry out message communication. Continue to CP based on this decoding result
At step SP69, the U 21 determines whether to wait for a response message from the receiving terminal 4. When waiting for a response message, the control procedure CON after "response" in FIG.
The procedure proceeds to the normal transfer communication procedure indicated by T.

If the user does not wait for a response message, that is, if message communication is to be performed, in step SP70,
The disconnection message stored in the message memory 24 is extracted and sent to the above-mentioned called terminal 4 through the network interface unit 32, and in step SP71, the release message sent from the called terminal 4 as its return is received,
Further, after the release completion message is sent in step SP72, the series of connection control procedures are completed in step SP73.

The CPU 21 also executes the above-mentioned step SP63.
For the calling terminal 3 in the calling state at step SP74, the message memory 25 is received at step SP67 and received at step SP68.
A disconnection message carrying the message from the called party recorded in the above as user / user information is transmitted. Subsequently, in step SP75, the CPU 21 receives the release message sent as a return to the disconnection message, sends the release completion message stored in the message memory 24 in step SP76 as the return, and then in step SP77. The series of connection control procedures are completed.

In addition to this, the CPU of the receiving terminal 4 (FIG. 3)
11R is an incoming call processing routine RT13 shown in FIG.
to go into. At this time, the network interface unit 20 of the receiving terminal 4
R is the user / user information delivered from the transfer terminal 5, and the ISDN includes the call setup message including the message from the sender.
Received via the network's D channel, step S
In P81, this call setting message is sent to the CPU 11R. The CPU 11R which has received this call setting message extracts the message from the caller sent along with this user / user information in step SP82 and extracts the message memory 1
Record on 5R and decipher whether or not to use message communication. Based on this decoding result, the CPU 11R subsequently determines in step SP83 whether or not to send a response message to the transfer terminal 5. When the response message is sent, the procedure shifts to the normal transfer communication procedure shown in the control procedure CONT after "response" in FIG.

When the response message is not sent, that is, when the message communication is performed, the CPU 11R makes a step SP.
At 84, the calling message stored in the message memory 14R is extracted and sent to the transfer terminal 5 through the network interface unit 20R. At this time, the receipt confirmation for the message from the sender and the message of the called party stored in the message memory 15R in advance are put on the calling message as user / user information.

Subsequently, in step SP85, the CPU 11R sends the transfer terminal 5 as a return message to the calling message.
Receive the disconnect message sent from
The release message is sent at P86. Then CPU
After receiving the release completion message at step SP87, the 11R completes the series of connection control procedures at step SP88. Note that by adding the personal authentication information of the sender to the message of the sender, the recipient of the transfer destination can utilize the personal authentication information of the sender to confirm the response to the message of the sender. It goes without saying that various contents can be selected.

[0079]

As described above, according to the present invention, even when the transfer terminal is used, the information channel can be set in the ISDN call control procedure without preparing special communication control means. Instead, it becomes possible to send and receive messages bidirectionally between the transmission source and the transfer destination from the transfer terminal on the signal channel.

Therefore, even if the transmission destination is the transfer terminal, the caller can send and receive a message as in the case of a direct call with the transfer destination. Also, the callee of the transfer destination can handle the transfer call without any difference from the direct call.

In addition, when the message is transferred, no special communication control procedure is prepared, and the information channel is not set in the ISDN call control procedure on the signal channel.
It becomes possible to send and receive messages between the sender and the transfer destination from the transfer terminal. Therefore, even if the caller is the transfer terminal, the caller can send and receive messages to and from the transfer destination as in the case of a direct call. Also, the callee of the transfer destination can handle the transfer call without any difference from the direct call.

[Brief description of drawings]

FIG. 1 is a block diagram showing a message communication system to which a message transfer system according to the present invention is applied.

FIG. 2 is a block diagram showing a transmitting terminal.

FIG. 3 is a block diagram showing a called terminal.

FIG. 4 is a block diagram showing a transfer terminal.

FIG. 5 is a flow chart showing a connection control procedure between a calling terminal, a forwarding terminal and a called terminal.

FIG. 6 is a flow chart showing a control procedure of a transmitting terminal.

FIG. 7 is a flow chart showing a control procedure of a transfer terminal.

FIG. 8 is a flow chart showing a control procedure of a receiving terminal.

FIG. 9 is a schematic diagram showing a conventional communication-side control procedure.

FIG. 10 is a flow chart showing a connection control procedure among a calling terminal, a forwarding terminal and a called terminal in the second embodiment.

FIG. 11 is a flow chart showing a control procedure of a transmitting terminal.

FIG. 12 is a flow chart showing a control procedure of a transfer terminal.

FIG. 13 is a flow chart showing a control procedure of a receiving terminal.

[Explanation of symbols]

1 ... communication system, 2 ... communication network, 3 ... sending terminal,
4 ... Receiving terminal, 11, 11R, 21 ... CPU, 1
2, 12R, 22 ... System bus, 13, 13R, 2
4 ... Control program memory, 14, 14R, 24 ...
Message memory, 15, 15R, 25 ... Message memory, 16, 16R, 26 ... Operation section, 17, 17R, 2
7 ... Display unit, 18, 18R, 28 ... Calling unit, 20, 2
0R, 32 ... Network interface section, 19, 19R, 2
9, 30 ... Communication path.

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-2-217062 (JP, A) JP-A-4-29452 (JP, A) JP-A-63-94760 (JP, A) JP-A-5- 252313 (JP, A) JP-A-2-54645 (JP, A) JP-A-3-262251 (JP, A) JP-A-4-183049 (JP, A) JP-A-2-153662 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04L 12/56 H04M 11/00 H04M 1/00

Claims (8)

(57) [Claims] 1. In a communication network capable of transmitting and receiving a call setup message, a call message and a disconnection message in a call control procedure, a calling terminal transmits a first call setup message in which a caller's message is added to user / user information. A user terminal of a second call setting message directed to the receiving terminal, which receives the message of the caller carried on the user / user information of the first call setting message at the transfer terminal A message transfer processing method for transmitting information on the information, receiving the second call setting message at the receiving terminal, and extracting a message of the caller from user / user information of the second call setting message. In the receiving terminal, the message of the called party is put on the user / user information of one or both of the calling message and the first disconnecting message. A step, a step of transmitting the calling message at the receiving terminal, a step of transmitting a first disconnecting message at the receiving terminal, a step of receiving the calling message at the transferring terminal, and a step of receiving the calling message at the transferring terminal. A step of receiving one disconnection message, and one or both of the call message and the first disconnection message at the transfer terminal,
A step of receiving the message of the called party carried on the user information and sending the message of the called party by carrying the message of the called party on the user / user information of the second disconnection message directed to the sending terminal; And a step of extracting the message of the called party from the user / user information of the second disconnection message, the message transfer processing method. 2. In a communication network capable of transmitting and receiving a call setting message, a calling message and a disconnecting message in a call control procedure, a calling terminal transmits a first call setting message in which a caller's message is added to user / user information. A user terminal of a second call setting message directed to the receiving terminal, which receives the message of the caller carried on the user / user information of the first call setting message at the transfer terminal A message transfer processing method for transmitting information on the information, receiving the second call setting message at the receiving terminal, and extracting a message of the caller from user / user information of the second call setting message. A step of putting the message of the called party on the user / user information of the calling message at the receiving terminal, and the calling message at the receiving terminal And a step of receiving the call message at the transfer terminal, and a message of the called party carried on the user / user information of the call message at the transfer terminal, and a message of the callee. A step of transmitting the user information of the first disconnection message to the transmitting terminal, the step of transmitting the first disconnection message at the transmitting terminal, and receiving the first disconnection message from the user terminal of the first disconnection message. And a step of extracting a message of the called party. 3. The transfer terminal, following the step of receiving the calling message, a step of transmitting a second disconnection message directed to the called terminal, and the step of receiving the second disconnection message at the called terminal. The message transfer processing method according to claim 2, further comprising a step. 4. The message transfer processing method according to claim 1, wherein a message of the sender and personal authentication information are used as the message of the sender. 5. The message transfer processing method according to claim 1, wherein a confirmation of receipt of a message from a sender and a message of the recipient are used as the message of the recipient. 6. In the step of transmitting a first call setting message in which the message of the caller is put on the user / user information in the calling terminal, a message requesting the sending and receiving of the message is used as the message of the caller, and the incoming call is received. Subsequent to the step of receiving the second call setting message at the terminal, when the message requesting the sending and receiving of the message is decoded, the step of sending the calling message acknowledges the request for sending and receiving the message as the message of the called party. And a step of transmitting the second disconnection message when the message that the message of the callee is understood to be transmitted is decoded, following the step of receiving the calling message at the transfer terminal. The message transfer processing method according to claim 3. 7. A transfer terminal, which is interposed between a calling terminal and a called terminal and sends and receives a message by a call setting message, a calling message and a disconnecting message in a call control procedure via a communication network, wherein First receiving means for receiving a first call setting message in which a message of the caller is added to user information, and a user user of a second call setting message in which the message of the caller is directed to the receiving terminal. First transmitting means for transmitting the information, second receiving means for receiving a calling message from the receiving terminal, and third receiving means for receiving a first disconnecting message from the receiving terminal, A second message directed to the calling terminal is the message of the called party carried in the user / user information of one or both of the call message and the first disconnection message. Transfer terminal, characterized in that it comprises a second transmission means for transmitting placed on a user-user information of the cross-sectional Metsuseji. 8. A transfer terminal, which is interposed between a calling terminal and a called terminal and sends and receives a message by a call setting message, a calling message and a disconnecting message in a call control procedure via a communication network, wherein a user from the calling terminal. First receiving means for receiving a first call setting message in which the message of the caller is added to the user information; and a user of a second call setting message for sending the message of the caller to the receiving terminal. First transmitting means for transmitting the information on the user information, second receiving means for receiving a call message from the receiving terminal, and transmitting the message of the called party on the user / user information of the call message. Second transmitting means for transmitting the user information of the first disconnection message directed to the terminal and transmitting the second disconnection message directed to the receiving terminal Transfer terminal, characterized in that it comprises a third transmission means.