JP2740462B2 - ISDN exchange - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ISDN exchange,
In particular, the present invention relates to an ISDN exchange having a voice storing function and a reproducing function.

[0002]

2. Description of the Related Art A conventional ISDN exchange has a message dial function, an automatic answering function in the absence, and a voice storage function. When a call is required, the voice is immediately stored and reproduced later. It does not have a voice storage function and a voice reproduction function.

On the other hand, there is a method for realizing the same kind of service by providing a terminal with a voice storage function and an automatic response function.

As an example of this conventional system, Japanese Patent Laid-Open Publication No.
Japanese Patent No. 236075 discloses a “handset telephone having a memo function”.

In this handset telephone, a memo switch (1) is provided in a part of the handset which is easy to grasp and operate with a hand in a handset telephone having a memo function for recording an important part during a call on a recording medium (10). , pushed this note for the switch (1) only to record the call voice in the recording medium (10) when you press during a call, also, in order to hear what was recorded earlier later in the recording medium (10) A reproduction switch (2) is provided, and a sound recorded by the memo switch (1) and reproduced by the reproduction switch (2) is heard from the handset. Further, it is provided with a voice / character conversion circuit (3) for converting the recorded voice reproduced by the reproduction switch (2) into characters, and a display unit (4) for displaying the converted characters.

[0006]

In the conventional ISDN exchange, in the case of an ISDN terminal or a portable terminal having a multimedia function, since the contents during a call are important contents, it is necessary to use both hands when suddenly taking notes. If the caller is busy, remember this call once in your head and remember it later, or stop the ongoing manual work and look for memo paper to take notes So
In particular, there is a problem that it is extremely inconvenient when it is necessary to store the call during a call with the portable terminal outdoors.

Further, if control is performed using an in-band channel signal (PB signal, DP signal, etc.) during a telephone call such as a message dial, the in-band channel signal can be heard by the other party of the call, and the quality of the telephone call is reduced. was there.

[0008] On the other hand, the method in which the terminal has a voice storage function and an automatic response function has a problem that the amount of hardware increases and the price increases, and the form of the terminal in a portable terminal increases. And it ’s not only heavy,
There is a problem that the operation time of the battery is shortened because power consumption is increased.

An object of the present invention is to provide an exchange with voice storage and voice reproduction functions, and to control voice storage control and voice reproduction control from an out-band channel (D
The present invention is to provide an ISDN exchange which solves all the above problems by using a channel) signal.

[0010]

According to the present invention, an ISD is provided.
In the N exchange, when a terminal originates or during a call, a voice storage start request using an out-band channel signal from the destination terminal starts the storage of the voice during the call and receives a voice storage stop request until the call ends or a voice storage stop request is received. Voice storage means for continuing the storage of the voice until the request is received , voice reproduction means for reproducing the stored voice in response to a voice read request using the out-band channel signal from the destination terminal, and a pre-registered password for each terminal. Number and destination
The password entered by the terminal at the time of the voice storage start request is
And a personal identification checking means for comparing, checking the PIN
Means for transmitting the out-band channel signal from the destination terminal;
Password check is performed by voice reading request using
Play the audio only when the check result is normal
I means characterized that you play audio that the storage
An SDN switch is obtained.

Further, the password check means may be used before the comparison.
Check result is normal when passwords match
Thus, an ISDN exchange characterized by determining that

[0012]

Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of an ISDN exchange showing one embodiment of the present invention.

Referring to FIG. 1, in the present embodiment, an ISDN terminal (ISDN TRM) 1 and an ISDN exchange (ISD exchange)
N.EX) 3 and a voice storage device (VSE) 6.
The ISDN TRM 1 is connected to the ISDN EX 3 through a digital line termination unit (DSU) 2 for performing communication.

The VSE 6 performs ISDN through a control bus (C · BUS) 5 to perform voice storage control and voice reproduction control for voice communication through a highway (HW) 4.
-Connected to EX3.

[0016] ISDN TRM1 receives I through DSU2.
TTC Recommendation I.3 with SDN / EX3 430 and I.P. 431 is performed.

The ISDN EX3 includes a communication path system signal device (SP) 31 including a known line concentrator, a distribution stage communication device, a subscriber line signal and an inter-station signal processing device; A central processing unit (CP) 32 for performing control and data transfer control with the input / output device, and a maintenance operation unit (MO) for monitoring and testing the normality of the system such as monitoring the exchange and testing the communication path system. ) 33.

The VSE 6 terminates the HW 4 and converts it into internal serial data.
F) In accordance with an instruction from the control circuit (CNT) 64, the audio data of the corresponding time slot (TS) is sequentially transferred from the head area from the internal serial data output from the HW / IF 61 to the memory (MEM) 63 at the time of the audio storage. And at the time of audio playback, the corresponding TS of MEM63.
Data is sequentially read from the head area of the HW / IF 61 and transferred to the HW / IF 61 as internal serial data.
The audio stored in the corresponding TS of HW4 is reproduced through
The inserter / dropper circuit (INS / DRP) 62 for transferring the data to the SDN / EX3, the MEM 63 for storing the audio data in TS units of the HW4, and the voice storage control signal and the voice reproduction control signal from the CP 32 are analyzed, and the HW / IF61 is analyzed.
And INS / DRP 62 to control HW4
Is stored in the corresponding TS unit area of the MEM 63, and at the time of voice reproduction, data is read from the head area of the corresponding TS unit memory of the MEM 63 and the data stored in the corresponding TS of the HW4 is reproduced as sound. CNT
64.

Next, the operation of this embodiment will be described with reference to FIGS. 2, 3 and 4. FIG. FIGS. 2, 3 and 4 are sequence diagrams showing the flow of messages at the time of voice storage start instruction, voice storage stop instruction and voice reproduction instruction in FIG. 1, respectively.

First, when a caller originates a call, a switching connection is made through ISDN EX3 using an out-band channel signal (D-channel signal) according to a known protocol, and the caller and the called party are connected. A call is made.

In this embodiment, ISDN TRM1 and ISDN
In order to perform voice storage control and voice playback control with the DN / EX3, the TTC Recommendation I.DN. A facility message (hereinafter referred to as FAC) defined in 431 is used.

When ISDN TRM1 transmits FAC, SP31 receives this FAC through DSU2 and transmits it to CP32. The CP 32 analyzes this, and performs the following sequence processing according to the control type.

The voice storage start instruction, voice storage stop instruction, and voice reproduction start instruction from the ISDN TRM 1 are performed by operating the dedicated keys provided on the ISDN TRM 1 or by using “*”, “#”. Each FAC can be performed on ISDN / EX3 by a special operation using a key. Sequence at the time of instructing the start of voice storage (see FIGS. 1 and 2) First, F with terminal number added from ISDN TRM1
Sends AC (rec-rq) to instruct ISDN EX3. The CP 32 hunts a vacant TS of the HW4, and adds the vacant TS obtained by the hunt to the up-down bidirectional communication TS of the corresponding terminal.
Is connected, and the vacant TS number and the terminal number obtained by hunting are stored, and the CTL (rec) of the control message (hereinafter referred to as CTL) to which the vacant TS number is added is stored.
-Rq) to the CNT 64 via the C.BUS5. The CNT 64 instructs the INS DRP 62 to start accumulating from the beginning of the memory area of the corresponding TS in the MEM 63 corresponding to the empty TS. INS / DRP62 is MEM6
In addition to storing the voice in the corresponding area of No. 3, the terminal number is given as CTL (rec-ans) to notify that ISDN / EX3 has started storing. When control on the exchange side for FAC (rec-rq) is completed in ISDN EX3, ISDN EX3
Notifies the ISDN TRM 1 of the start of storage as FAC (rec-ans). In addition, ISDN ・ T
For example, “accumulating” is displayed on the LED from the reception of the FAC (rec-ans) by the RM 1 to the reception of the FAC (stp-ans) to be described later or until the call is terminated and disconnected. be able to. Sequence at the time of voice storage stop instruction (see FIGS. 1 and 3) First, F with terminal number added from ISDN TRM1
Send AC (stp-rq) to instruct ISDN EX3. The CP 32 stores the terminal number and hunts HW4
Is released. Then, the CTL (stp-rq) to which the released TS number has been assigned is transmitted to the C
Notify NT64. CNT64 is INS · DRP62 to the above released T
The storage of the corresponding TS of the MEM 63 corresponding to the S in the memory area is stopped, and the fact that the storage is stopped is notified by the CTL.
(Stp-ans) with ISDN
-Notify EX3. When the control on the exchange side for the FAC (stp-rq) is completed in the ISDN EX3, the ISDN EX3
Notifies the ISDN TRM 1 that the accumulation has been stopped as FAC (stp-ans). Sequence at the time of voice reproduction instruction (see FIGS. 1 and 4) First, the FDN (play-rq) to which the terminal number to be reproduced is added is transmitted from the ISDN
Instruct EX3. The CP 32 stores the terminal number, and stores the terminal number in a vacant TS obtained by hunting in the downstream direction (ie, ISDN / EX).
3 → Connect ISDN TRM1) TS,
The connected TS number and the terminal number are stored, and the CTL (play-rq) to which the connected TS number is assigned is represented by CB
Notify CNT64 through US5. CNT64 is the TS connected to INS / DRP62.
Is instructed to be reproduced from the beginning of the memory area of the corresponding TS of the MEM 63 corresponding to. INS / DRP62 is ME
The audio data of the corresponding area of M63 is read, and INS
The audio of the corresponding TS of the HW4 is reproduced through the DRP 62, and the fact that the reproduction is started is indicated by the CTL (play-an).
The terminal number is assigned as s) and the terminal number is notified to ISDN EX3. FAC (play-rq) in ISDN / EX3
When control on the exchange side is completed, ISDN EX
No. 3 indicates that the reproduction has been started, FAC (play-ans)
To the ISDN TRM1.

Note that the stop of the sound reproduction is controlled by the disconnection of the caller by the same control as the sequence at the time of the sound accumulation stop instruction, so that the detailed description will be omitted.

In this embodiment, if a serial number is managed for each terminal number and it is made to correspond to a memory area for each TS of the MEM 63, a plurality of voices can be stored by one terminal.

In this embodiment, when performing a password check prior to the start of voice reproduction, the ISDN shown in FIG.
When transmitting the FAC (rec-rq) from the TRM1, a personal identification number is added and transmitted, and the personal identification number is stored in the CP 32 for each terminal number. Then, in response to a voice read request from ISDN TRM1, FAC (play) shown in FIG.
-Rq), a password is assigned and transmitted, and CP3
2 receives this password and receives the FAC (rec-rq)
The terminal number is compared with the terminal number stored at the time of reception, and when the comparison result matches, it is determined to be normal and the subsequent sequence is advanced. As a result, unauthorized reproduction of the stored call contents can be prevented.

Since the MO 33 is not directly related to the present invention, a detailed description of its operation is omitted.

[0028]

As described above, the ISDN exchange of the present invention starts storing voice during a call in response to a voice storage start request using an out-band channel signal from a destination terminal when a call is originated from three terminals or during a call. a voice storage unit to continue the accumulation of the voice until the call receives or until the voice storing stop request ends, the sound reproduction means for reproducing speech stored by the speech read request using the outband channel No. signal from the destination terminal And each terminal registered in advance
The PIN and the password entered by the destination
Password checking means for comparing with a password.
Certificate checking means is an out-band channel from the destination terminal
Performs a password check upon request for voice reading using signals
Audio playback only when the check result is normal.
The stage plays the stored sound and
The security check means checks when the compared passwords match.
The Rukoto be determined that Ekku result is normal, an effect that it is possible to perform the voice storing control and voice reproduction control with little increase without and hardware affecting the call.

When it is desired to record the contents of a call suddenly during a call, the contents of the call can be stored with one touch without interrupting the work, and the stored contents can be reproduced at any time later. This has an effect that occurrence of a memory difference can be prevented.

[Brief description of the drawings]

FIG. 1 is a block diagram of an ISDN exchange showing one embodiment of the present invention.

FIG. 2 is a sequence diagram showing a flow of a message when a voice storage start instruction is given in FIG. 1;

FIG. 3 is a sequence diagram showing a flow of a message at the time of a voice accumulation stop instruction in FIG. 1;

FIG. 4 is a sequence diagram showing a flow of a message at the time of an audio reproduction instruction in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ISDN terminal (ISDN / TRM) 2 Digital line termination unit (DSU) 3 ISDN exchange (ISDN / EX) 4 Highway (HW) 5 Control bus (C / BUS) 6 Voice storage unit (VSE) 31 Communication path signaling device (SP) 31 32 Central processing unit (CP) 33 Maintenance operation unit (MO) 61 Highway interface (HW / IF) 62 Inserter / dropper circuit (INS / DRP) 63 Memory (MEM) 64 Control circuit (CNT)

Claims (2)

(57) [Claims] In an ISDN exchange, during a call originating from a terminal or during a call, a voice storage start request using an out-band channel signal from a destination terminal starts the storage of the voice during the call and continues until the call is terminated or until the voice ends. a voice storage unit to continue the accumulation of the speech until receiving the accumulation stop request, and sound reproducing means for reproducing a sound that the storage by the audio read request using the outband channel signal from the destination terminal, registered in advance Of each device
The password and the destination terminal are entered when the voice storage start request is made.
Password checking means for comparing with the
The password checking means is adapted to transmit the password from the destination terminal.
By voice read request using outband channel signal
A password check was performed and the check result was normal.
The ISDN exchange, wherein the voice reproducing means reproduces the stored voice only when the time has passed . 2. The password checking means according to claim 1, wherein said password checking means compares said password.
If the certificate numbers match, the check result is determined to be normal.
2. The ISDN exchange according to claim 1, wherein said switch is turned off.