WO2012124185A1

WO2012124185A1 - Communication system

Info

Publication number: WO2012124185A1
Application number: PCT/JP2011/068755
Authority: WO
Inventors: 若井　洋丈; 板井　公雄
Original assignee: 株式会社日立国際電気
Priority date: 2011-03-16
Filing date: 2011-08-19
Publication date: 2012-09-20
Also published as: JP2012195726A; JP5879040B2

Abstract

[Problem] To provide a communication system capable of achieving simultaneous sound broadcasting using telephone sets capable of individually performing telephone calls, without adding new hardware. [Solution] A communication system wherein, an IP telephone control device (3) outputs an automatic sound guidance to an off-hook telephone set to notify the start of broadcasting until a broadcast message is transmitted, whether simultaneous sound broadcasting from a control base (1) to a telephone set (4a) is normally received or the reception has failed is monitored by signals corresponding to off-hook and on-hook of the telephone set, information regarding the reception state of each telephone set is stored in a simultaneous sound management table and recognized, and a broadcast message is sent again to the telephone set in which the reception has failed.

Description

Communications system

The present invention relates to a communication system using a telephone capable of individual calls, and more particularly, to a communication system that realizes broadcast of audio without adding new hardware.

[Conventional technology]
In general, the telephone exchange technology using SIP (Session Initiation Protocol) is not intended for simultaneous audio broadcasting on the premise of individual communication.
Therefore, dedicated hardware is required for simultaneous broadcasting of audio.

[Conventional communication system: FIG. 8]
A conventional communication system for performing audio broadcasting will be described with reference to FIG. FIG. 8 is a configuration diagram of a conventional communication system.
As shown in FIG. 8, the conventional communication system includes a control table 1, an IP (Internet Protocol) network 2, an IP telephone control device (MF) 3, and terminal stations 4′-1 and 4′-2. I have.
Here, although the terminal station showed the A station and the B station, many terminal stations are originally connected.

The control stand 1 performs communication control for broadcasting audio simultaneously.
The IP network 2 is a network that connects each device.
The IP telephone control device 3 performs exchange control using SIP, and realizes a call between the telephones of the terminal stations and between the telephone of the control stand 1 and the telephone of the terminal station.

The terminal station 4 ′ includes an IP telephone 4a ′, a speaker 4b ′, and a reception confirmation button 4c ′.
The telephone 4a 'functions as an IP telephone, the speaker 4b' outputs a voice broadcast from the control board 1, and the reception confirmation button 4c 'is pressed to confirm reception by listening to the broadcast. I will reply.

[Related technologies]
As related prior art, JP 2010-103636 A “Disaster prevention system” (Hitachi Kokusai Electric) [Patent Document 1], JP 2010-177814 A “IP communication command exchange” (Hitachi, Ltd.) ) [Patent Document 2].

Patent Document 1 describes that a simultaneous command is issued using a SIP server. For example, FIG. 2 shows that a simultaneous command is recorded and then an acceptance is prompted.
Patent Document 2 describes that simultaneous commands are performed using a SIP server, but it is shown that corresponding command buttons are operated based on line button information in response to NOTIFY messages.

JP 2010-103636 A JP 2010-177814 A

However, in the conventional communication system, in order for the control stand 1 to recognize whether or not the audio broadcasting has been normally received, dedicated hardware such as a reception confirmation button is necessary. There was a problem that it was difficult to confirm the reception order of audio broadcasting without adding.

Japanese Patent Laid-Open No. 2004-228561 prompts an acceptance after recording a simultaneous command, and does not enable the confirmation of the reception immediately after the completion of the simultaneous audio broadcasting.
Further, in Patent Document 2, a command button is operated, a special button needs to be provided in the telephone, and new hardware is required.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a communication system that realizes simultaneous broadcasting of audio without adding new hardware using a telephone capable of individual calls. To do.

The present invention for solving the problems of the above-described conventional example is a communication system that performs voice simultaneous broadcasting to a plurality of telephones, and when receiving a voice simultaneous command request for the plurality of telephones from a control stand, Until a call process is performed for a plurality of telephones and a broadcast message is transmitted to the telephones, a toy sound indicating the start of broadcasting is output to the off-hook telephone, and the off-hook and on-hook of the plurality of telephones are monitored. And a telephone control device for storing information on the reception status of the plurality of telephones and retransmitting the broadcast message to the telephone having failed reception based on the information on the reception status.

The present invention is a communication system that broadcasts voice to a plurality of telephones. When a voice simultaneous command request is received from a control table, the telephones perform call processing on the plurality of telephones. A telephone control device that monitors off-hook and on-hook of the plurality of telephones, stores information on the reception status of the plurality of telephones, and retransmits a broadcast message to a telephone that has failed reception based on the information on the reception status. It is characterized by having.

According to the present invention, when the telephone control device receives a voice simultaneous command request for the plurality of telephones from the control table, the telephone control apparatus performs a calling process on the plurality of telephones and transmits a voice simultaneous broadcast message to the telephone. During the period of time, a toy sound that informs the start of broadcasting is output to the off-hook telephone, the off-hook and on-hook of the plurality of telephones are monitored, and the information on the reception status in the plurality of telephones is stored. Because the communication system resends broadcast messages to telephones with failed orders, the off-hook telephone can easily know the start of broadcasting with a toy sound, and further retransmits broadcast messages to telephones with failed orders. The only voice that can be confirmed and confirmed without using new hardware, using only phones that can be used for individual calls. There is an effect to realize the broadcast.

According to the present invention, when the telephone control device receives a voice simultaneous command request from the control table, the telephone control device performs a calling process on the plurality of telephones, monitors off-hooks and on-hooks of the plurality of telephones, and Since the communication system stores the information on the command status of the telephone set and retransmits the broadcast message to the telephone with the command failed based on the information on the command status, the broadcast message is resent for the telephone with the command failed. In addition, there is an effect that it is possible to realize a simultaneous broadcast of audio by using only a telephone capable of making an individual call and reliably confirming an order without adding new hardware.

It is a block diagram of the communication system which concerns on embodiment of this invention. It is a block diagram of the configuration of the IP telephone control device. It is the schematic of a sound simultaneous management table. It is a processing flow of an IP telephone control apparatus. 6 is a timing chart of call sequence 1; It is a timing chart of the simultaneous sound sequence 2-1. It is a timing chart of the simultaneous sound sequence 2-2. It is a block diagram of the conventional communication system.

Embodiments of the present invention will be described with reference to the drawings. [Outline of the embodiment]
In the communication system according to the embodiment of the present invention, the IP telephone control device monitors the normal reception and reception failure of the simultaneous audio broadcasting from the control table to the terminal station telephone by signals corresponding to the off-hook and on-hook in the telephone. , The reception status of each telephone is stored and recognized in the voice simultaneous management table, and broadcast messages are retransmitted to telephones that have failed to be received. In addition to the individual call function, no new hardware is provided. Thus, it is possible to easily realize audio broadcasting.

[Communication system: Fig. 1]
A communication system according to an embodiment of the present invention will be described with reference to FIG. FIG. 1 is a configuration diagram of a communication system according to an embodiment of the present invention.
As shown in FIG. 1, a communication system (this system) according to an embodiment of the present invention includes a control table 1, an IP (Internet Protocol) network 2, an IP telephone control device (MF) 3, and a terminal station 4. -1, 4-2. Hereinafter, when the terminal stations 4-1 and 4-2 are not distinguished, they are simply referred to as the terminal station 4.
Here, although the terminal station 4 showed the A station and the B station, many terminal stations are connected originally.

[Parts of this system]
Each part of this system will be specifically described.
The control stand 1 performs communication control for simultaneous broadcasting of voices and can make a call with the telephone 4 a of the terminal station 4.
The IP network 2 is a network that connects each device.
The IP telephone control device 3 performs exchange control using SIP, and performs a call between the telephones 4a of the terminal station 4-1 and the terminal station 4-2, and between the control console 1 and the telephone 4a of the terminal station 4. In order to achieve this, the line connection is controlled.

Further, the IP telephone control device 3 monitors signals corresponding to the off-hook and on-hook of the telephone 4a for a voice broadcast message (broadcast message) from the control table 1, and is not off-hooked for the broadcast message. Recognize a new telephone, a telephone that is on-hook during broadcasting, and retransmit the broadcast message.

Also, when broadcasting a broadcast message, the IP telephone control device 3 delivers the broadcast message after a predetermined time has elapsed since the transmission of the voice simultaneous command request, and the telephone 4a that is off-hook before the predetermined time has elapsed. In response to this, a toy sound indicating that the broadcast is about to start is output until the broadcast is started.
The configuration and processing of the IP telephone control device 3 will be described later.

The terminal station 4 includes an IP telephone 4a and a speaker 4b.
The telephone 4a functions as an IP telephone, and the speaker 4b is connected to the telephone 4a and outputs a voice broadcast from the control table 1.
Here, although the speaker 4b is provided as an externally connected speaker of the telephone 4a, a built-in speaker included in the telephone 4a may be used.

[IP telephone control device: FIG. 2]
Next, the configuration of the IP telephone control device 3 will be described with reference to FIG. FIG. 2 is a block diagram of the configuration of the IP telephone control device 3.
As shown in FIG. 2, the IP telephone control device 3 includes a transmission / reception unit 31, a control unit 32, and a storage unit 33.

The transmission / reception unit 31 receives various signals from the IP network 2 and transmits various signals to the IP network 2 according to instructions from the control unit 32.
The control unit 32 inputs a signal from the transmission / reception unit 31 to perform exchange control, and outputs a corresponding signal to the transmission / reception unit 31.
The storage unit 33 stores a line connection state, and stores a voice simultaneous management table described below.

The control unit 32 of the IP telephone control device 3 manages whether or not the broadcast message is normally received for each telephone, such as the first, second, third,... Broadcast telephone messages are retransmitted to telephones that have not been properly ordered.

If the broadcast message is normally received, the telephone goes off-hook before the broadcast message starts, and the telephone goes on-hook after the broadcast message ends, and the signals corresponding to the off-hook and on-hook from the telephone are monitored. The control part 32 can grasp | ascertain by this.
The processing of the control unit 32 of the IP telephone control device 3 will be described later.

Regarding the broadcast message retransmission process, the control console 1 can instruct the IP telephone control device 3 to forcibly end the retransmission process when a new broadcast message is broadcast simultaneously. .
Alternatively, when the IP telephone control device 3 receives a request to broadcast a new broadcast message from the control console 1, the IP telephone control device 3 may voluntarily stop the retransmission process.

[Voice simultaneous management table: Fig. 3]
Next, the voice simultaneous management table stored in the storage unit 33 of the IP telephone control device 3 will be described with reference to FIG. FIG. 3 is a schematic diagram of a voice simultaneous management table.
As shown in FIG. 3, the simultaneous voice management table stores, for each telephone ID (identifier), for example, the status of acceptance for the first, second, and third broadcast message transmissions for the telephone 4a of the terminal station 4. is doing. “○” indicates normal acceptance, and “×” indicates failure in acceptance.
Also, if there is a normal acceptance, there is no need to retransmit the broadcast message thereafter, so information (in this case, a “-” mark) indicating that retransmission processing is not performed is set in the table.

[IP phone control device processing: FIG. 4]
Next, processing performed by the control unit 32 of the IP telephone control device 3 will be described with reference to FIG. FIG. 4 is a flowchart showing an outline of the processing of the IP telephone control device 3. Details of the processing of the IP telephone control device 3 will be described later with reference to FIG.
The process performed by the control unit 32 of the IP telephone control device 3 determines whether or not a voice simultaneous command request has been received from the control console 1 as shown in FIG. 4 (S1). The audio simultaneous command request is a request signal for starting audio simultaneous broadcasting.

When there is a voice simultaneous command request (in the case of Yes), the control unit 32 recognizes the telephone 4a that is off-hook after requesting the voice simultaneous command to the telephone 4a, and outputs a talk sound to the off-hook telephone (S2). The toy sound informs the start of broadcasting, for example, “Broadcasting will start in 3 seconds”.
If the voice simultaneous command request is not received in the determination process S1, the process S1 is repeated. Further, the control unit 32 stores the telephone 4a that has not been off-hooked.

And the control part 32 memorize | stores the state of the telephone 4a in a voice simultaneous management table after completion | finish of broadcast (S3). The case of normal acceptance and failure of acceptance will be stored in the table.
Then, it is determined whether or not the number of retransmissions has reached a specific number N (S4).

If the number of retransmissions is not the specific number N (in the case of No), the broadcast message is retransmitted after the specific time has elapsed, and the number of retransmissions is incremented by 1 (S5). And it returns to process S2.

If the number of retransmissions reaches the specific number N in the determination process S4 (in the case of Yes), the contents of the voice simultaneous management table are output to the control table 1 as a report (S6).
Here, the report output is performed collectively after N times of retransmission processing, but the report may be output individually each time a broadcast message is transmitted. Specifically, a report is output after the process S3.

[Call sequence 1: FIG. 5]
Next, a call sequence in this system will be described with reference to FIG. FIG. 5 is a timing chart of the call sequence 1.
As shown in FIG. 5, the call sequence is as follows. The control table 1 calls the telephone (1) via the IP telephone control device (MF) 3, and the telephone (1) is called and the call is probable. This shows the state until the call is ready and then the call is disconnected.
FIG. 5 is shown for comparison with the sequence of FIGS. 6 and 7 described below.

[Simultaneous audio sequence 2: FIGS. 6 and 7]
Next, an audio simultaneous sequence in this system will be described with reference to FIGS. FIG. 6 is a timing chart of the audio simultaneous sequence 2-1, and FIG. 7 is a timing chart of the audio simultaneous sequence 2-2. FIG. 6 and FIG. 7 are a series of charts, but are divided into two charts due to the relationship of the space. Specifically, each of (A), (B), (C), (D), and (E) in FIG. 6 is connected to each of (A), (B), (C), (D), and (E) in FIG. Is.

As shown in FIG. 6, when the voice simultaneous request (INVITE) is transmitted from the control table 1 to the MF 3 (S10), the MF 3 transmits a 100Trying provisional response to the control table 1 (S11). The INVITE message for the target station is copied and transmitted to each of the telephones (1) to (3) (S12 to S14).

At this time, the MF 3 receives a voice simultaneous request (INVITE) as a trigger, and a predetermined time (for example, about 10 seconds) set in advance until 200 OK indicating that the simultaneous command can be started is transmitted to the control console 1. Start counting.
The trigger to start counting for a predetermined time by the MF 3 may be that a temporary response of 100 Trying is transmitted to the control table 1, or that an INVITE message is transmitted to the command target station.

The telephones (1) to (3) that have received the INVITE send a temporary response of 100 Trying (S15 to S17), and then send 180 Ringing to the MF 3 (S18 to S20), and ring their own telephone.
The MF 3 that has received 180 Ringing normally transmits 180 Ringing to the control table 1 (see (6) in FIG. 5), and the control table 1 sounds an RBT (RingBackTone). Since 180 Ringing comes from the telephone, it terminates at MF3.
In other words, MF 3 transmits 180 Ringing to control table 1 when receiving a 180 Ringing from the phone in a call between normal control table 1 and the telephone. The transmission of 180 Ringing is suppressed.

Next, when the telephone is off-hooked, 200 OK is transmitted from the telephones (1) and (2) to the MF 3 (S21, S22). This message is not notified to the control table 1 and is terminated with MF3. As shown in FIG. 5, in the case of a normal call, the MF 3 that receives 200 OK from the telephone transmits 200 OK to the control table 1 (see (8) in FIG. 5), and ACK ( 5 (see (9) in FIG. 5) is transmitted to the telephone (1) (see (10) in FIG. 5), the control stand 1 and the telephone (1) are brought into a call-ready state.

However, in the case of simultaneous audio broadcasting from the control console 1, even if 200MF is received from the telephone, the MF 3 suppresses transmission of 200 OK to the control console 1, does not trigger ACK, and a predetermined time has elapsed since S10. Later, 200 OK is transmitted to the control table 1 in order to control the control table 1 and the telephone so as to be able to talk (S25).

In the example shown in FIG. 6, the telephone (3) is not picked up by the telephone (3) and is not off-hooked until the MF 3 transmits 200 OK (S 25) to the control table 1. Accordingly, the MF 3 stores, for example, in the storage unit 33, that the telephone set (3) has not made an off-hook response to the broadcast call (200OK has not been returned). Further, in this case, the MF 3 stores “x” indicating failure of acceptance for the first time of the telephone ID corresponding to the telephone (3) in the voice simultaneous management table shown in FIG.

Further, the MF 3 stores, for example, in the storage unit 33 that the off-hook of the telephones (1) and (2) has been detected (200 OK has been returned).
Further, upon receiving 200 OK from the telephones (1) and (2), the MF 3 reads out and outputs the toy sound data for informing the telephones (1) and (2) that broadcasting will be started from now on ( S23, S24).

When the control table 1 receives 200 OK from the MF 3 (S25), it transmits an ACK to the MF 3 (S26). The MF 3 that has received ACK from the control console 1 transmits ACK to the telephones (1) and (2) that have responded (S27, S28).
Then, as shown in FIG. 7, the lines of the control console 1 and the telephones (1) and (2) are brought into a call-enabled state (S29). And the control stand 1 starts audio | voice simultaneous broadcasting (S30).

Here, if the telephone (2) goes on-hook before the end of the audio broadcast from the control console 1 (before the end message is issued) (S31), BYE is transmitted from the telephone (2) to the MF 3 (S32). ). In this case, the MF 3 transmits 200 OK to the telephone set (2) (S33), and stores in the storage unit 33, for example, that the telephone set (2) is on-hooked during broadcast reception (on-hook detection during broadcast). . Further, in this case, the MF 3 stores “x” indicating failure of acceptance for the first time of the telephone ID corresponding to the telephone (2) in the voice simultaneous management table shown in FIG.

As shown in FIG. 5, in a normal call, the MF 3 that has received BYE from the telephone (3) (see (17) in FIG. 5) transmits BYE to the control console 1 (FIG. 5). Then, 200 OK is transmitted to the telephone set (3) (see (19) in FIG. 5).
However, when the audio broadcasting from the control console 1 is being broadcast, the MF 3 suppresses the transmission of BYE to the control console 1 even if BYE is received from the telephone, and that means that the BYE has been received from the telephone, ie, the broadcast. The handset is placed inside and off-hooked, and the telephone stores the fact that the broadcast instruction has failed.

Thereafter, when the voice simultaneous by the control console 1 is finished (S34), the control console 1 transmits a voice simultaneous end message (BYE) to the MF 3 (S35), and the voice to the telephone (1) in the off-hook state in the MF 3 A simultaneous end message (BYE) is transmitted (S36).
Then, the telephone (1) that has received BYE transmits 200 OK to the MF 3 (S37). After that, MF3 is the contents of the reception result, here, the telephone (1) is normally received, the telephone (2) is on-hook detected (acceptance failure) during the reception, and the telephone (3) is not yet received (acceptance failure). To the control table 1 (S38), the control table 1 returns ACK to the MF 3 (S39), and the first voice simultaneous transmission process is completed.

By performing a series of operations shown in FIG. 6 and FIG. 7, the MF 3 is in a case where the voice simultaneous reception is normally received, in a case where the sound is simultaneously on-hook, in a case where the voice simultaneous reception is not received. The telephones (1) to (3) can be managed in three states.

The control unit 32 of the MF 3 has a function of recording the audio content (broadcast message). For the telephones in the above states (2) and (3), as shown in FIG. Alternatively, the same voice simultaneous content is transmitted again by a retransmission instruction from the control table 1. In the retransmission process by MF3, since MF3 stores the broadcast contents and performs autonomously, the exchange between MF3 and control board 1 in FIGS. 6 and 7 can be omitted.

In the conventional communication system, hardware dedicated for audio simultaneous use, hardware such as a button for notifying that the audio simultaneous reception has been normally received, and an interface are required. However, in this system, since the MF3 monitors and stores the reception status of the telephones (1) to (3) that are simultaneously processing voices, the conventional configuration is no longer necessary, and normal individual communication is in progress. By using the telephone prepared for the purpose, it is possible to realize the simultaneous broadcasting of voice by the control table 1. As a result, the exchange system can be configured with a simple configuration in terms of price and functionality.
Further, since the telephones (1) to (3) and the control table 1 can be realized by general-purpose hardware such as an IP telephone, there is also an advantage that application to other systems becomes easy.

[Effect of the embodiment]
According to this system, the IP telephone control device 3 monitors the normal reception and reception failure of the simultaneous broadcasting of audio from the control table 1 to the telephone 4a by signals corresponding to the off-hook and on-hook of the telephone 4a, and The command status is stored and recognized in the voice simultaneous management table, and broadcast messages are resent to telephones that have failed to be received. Therefore, in addition to the individual call function, there is no need to install new hardware. There is an effect that broadcasting can be easily realized.

In addition, since this system is configured to output a toy sound informing the start of broadcasting to the off-hook telephone before the IP telephone control device 3 transmits a broadcast message, it is easy for a person who has off-hooked the telephone to broadcast. There is an effect to know the start.

The present invention is not limited to the above-described embodiment, and can be implemented with various modifications.
For example, in the above-described embodiment, the case where the IP telephone control device 3 executes the retransmission processing of the simultaneous audio broadcast based on the audio simultaneous management table has been described as an example. However, the present invention is not limited to this, and based on the respective reception states shown in FIG. 6 and FIG. 7 (for example, not off-hook for a call or on-hook during broadcasting), Retransmission processing may be performed.

In the above-described embodiment, the IP telephone control device 3 is configured to manage the elapse of a predetermined time from when the voice simultaneous request is received from the control table 1 until the voice simultaneous starts. However, the present invention is not limited to this. For example, the control table 1 monitors the elapse of a predetermined time after transmitting the voice simultaneous request. It may be transmitted to the apparatus 3 (S26), and the IP telephone control apparatus 3 may control the IP telephone control apparatus 3 so that the control table 1 and the telephone 4a are in a communicable state.

The present invention is suitable for a communication system that realizes simultaneous broadcasting of audio using a telephone capable of individual calls without adding new hardware.

DESCRIPTION OF SYMBOLS 1 ... Control stand, 2 ... IP (Internet Protocol) network, 3 ... IP telephone control apparatus (MF), 4 ... Terminal station, 4a ... Telephone, 4b ... Speaker, 4c ... reception confirmation button,
31 ... Transmission / reception unit, 32 ... Control unit, 33 ... Storage unit

Claims

A communication system for broadcasting audio to a plurality of telephones,
Upon receiving a voice simultaneous command request for the plurality of telephones from the control stand, a call processing is performed on the plurality of telephones, and a toy sound that informs the start of broadcasting is off-hook until a voice broadcast message is transmitted to the telephone. Output to the selected telephone, monitor off-hook and on-hook of the plurality of telephones, store information on the reception status of the plurality of telephones, and broadcast the broadcast to the telephone that has failed reception based on the information on the reception status A communication system comprising a telephone control device for retransmitting a message.
A communication system for broadcasting audio to a plurality of telephones,
When a voice simultaneous command request for the plurality of telephones is received from the control table, a call process is performed on the plurality of telephones, and off-hook and on-hook of the plurality of telephones are monitored, A communication system comprising a telephone control device that stores information and retransmits a broadcast message of a voice to a telephone that has failed to be received based on the information on the received state.