JPH0787185A - Talkie sender - Google Patents

Abstract

PURPOSE:To omit the complicated work dependent upon hands by automatically sending talkie data of another preliminarily designated channel at the time of detecting a break of the sound source in a sound source center. CONSTITUTION:The external sound source supplied from the outside is distributed to an A/D conversion part 303-1 and an attention sound detecting part 303-6. In the case of a break of the external sound source, reception break information is transferred from a reception break detecting part 303-2 to a talkie data inserting part 303-3, and the inserting part 303-3 reads in talkie data of the channel set to an alternative talkie channel setting part 303-5 from a highway bus 304-1 of a control package 304 and inserts it to the talkie sending channel to send it to the highway bus 304-1. That is, the talkie data inserting part 303-3 is provided with the talkie selecting function which automatically performs switching between the external talkie and the stored talkie based on information from the reception break detecting part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for sending a torch for notifying a telephone user of a state of a communication network when a telephone call is disturbed.

[0002]

2. Description of the Related Art Such a talkie indicates the situation when the telephone is busy and it is difficult to make a telephone call, the telephone is out of order, or the telephone number of the other party is changed. It is used to inform. Such a torch delivery device is shown in FIG.

Switching system monitoring test module (STM-
C) In the Toki transmission device (TKY) 101-1 mounted on the 101, the voice memory package (TKY-VM) 101-11 to 101-14 accumulates the encoded Toki data into the sound source. To do. This Toki data is a control package 10
It is stored under the control of the voice writing processing unit 1-15. The voice memory packages 101-11 to 101-14 can normally store 4 channels × 4 sheets = 16 channels of tokes, and can store tokes of various contents. Toki data from this sound source is supplied to a plurality of switching center monitoring test modules (STM-R) 102 via a control package (TKY-COM) 101-15 and a time division switch circuit (TDSW) 101-3. . The Toki data is further sent from the monitoring and testing module 102 through the Toki Highway to a plurality of switching units. The exchange unit is composed of an ISDN exchange module (ISM) 104, a digital exchange (D70) 103, etc., and the Toki data is transmitted to the user accommodated in them.

In this case, when the contents of the torch are limited to one exchange system, for example, when the number is changed, it can be processed only by that system. However, if it is necessary to send tokis with the same contents in a large area, such as when calls are crowded due to an earthquake, it may be necessary to prepare tokes for each switching system independently. Becomes complicated and lacks responsiveness.

[0005]

For this reason, it is conceivable to provide one torch sound source center in a fairly large area and distribute the tokes to each exchange system from here. With this method, by changing the sound source at the sound source center, the tokes of a plurality of exchange systems in the area can be changed all at once. However, this method has a drawback in that when a failure occurs in the sound source center or a failure occurs in the transmission line that sends the toki from the sound source center, the effect thereof becomes large. Therefore, it is necessary to install an alternative sound source in each exchange system in case of failure. Furthermore, there are the following problems when an alternative sound source is installed in each exchange system. That is, it is uneconomical to newly provide a device such as an announcement machine. Further, in the method of mounting the voice memory, if the ROM is used, it becomes difficult to change the contents of the torch, and if the RAM is used, a battery for holding the contents of the voice memory is required and further regular maintenance is required.

[0006]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention sends a torch for notifying the user of the communication network of the state of the communication network that constitutes the switching system consisting of the switching unit group of the communication path. In the device, the toque sending device includes a bandpass filter that detects a specific frequency of a caution signal included in an external toke from an external toque source outside the exchange system, and a detection circuit that detects a duration of the caution signal. And an attention sound signal detecting means including a detection circuit for detecting the appearance order of the specific frequencies, a torch accumulating means for accumulating an external torch, a timing measuring means, and an analog / digital (A / D) converting means, A plurality of torch reception disconnection detecting means for detecting interruption of the signal of the external torch and a torch selecting means for switching between the external torch and the stored torch are provided. An external torch consisting of an analog signal including a caution signal in which a signal of the frequency continues for a certain period of time and a toe signal for notifying the state of the communication network within the certain period of time is transmitted from an external toque source outside the switching system via a transmission line. The external talkie signal received by the timing sounding means and detected by the attention sound signal detecting means at every fixed cycle is digitized by the A / D converting means and stored in the talkie accumulating means. When the detection means detects a toke signal disconnection, the toke selecting means switches the torch to the output torch of the torch storage means, and the toke is distributed to each exchange unit included in the exchange system. A torch delivery device is provided.

[0007]

In the torch transmitting device of the present invention, the analog signal (voice) supplied from the torch sound source center is drawn into the torch transmitting device of the exchange system, digitized, and then distributed and supplied to each exchange unit as toke data. Furthermore,
Toki data for the alternative sound source stored in the memory of the exchange system is updated periodically by the toki from the sound source center, and when the toki signal from the sound source center is interrupted, the latest toki data for the alternative sound source is distributed. Supply. This switching is done automatically. Therefore, it is possible to prevent the delay in the transmission of the alternative torch, and even when the external torch sound source is interrupted, continuously prevent, for example, the congestion of the switching unit or the spread of the influence on the general call due to the increased congestion. be able to.

[0008]

FIG. 2 is a block diagram of an embodiment of the present invention.
In the figure, 303 is a toki distribution package (TKYIN according to the present invention.
S) is shown. 302 is a voice memory package corresponding to one of 101-11 to 101-14 in FIG. 1, and 304 is a control package corresponding to 101-15 in FIG. The external sound source supplied as an analog signal from the outside is the A / D converter 30
3-1 and attention sound detection unit 303-6. A / D converter
In 303-1, for example, it is encoded into digital data by μ-law (CCITT G.711). The encoded talkie data is distributed to the reception interruption detector 303-2, the talkie data inserter 303-3, and the caution sound detector 303-6.

When the external sound source is normally supplied,
Since the reception interruption information is not input from the reception interruption detection unit to the Tooki data insertion unit, the Toki data insertion unit inserts the Toki data of the external sound source into the Toki transmission channel set in the Tooki transmission channel setting unit 303-4. Then, the data is sent to the Toki Highway (HW) via the highway bus 304-1 of the control package 304. It is simultaneously stored periodically in one of the voice memory packages. (Details will be described later.)

When the external sound source is interrupted, the reception interruption information is transferred from the reception interruption detection section to the torch data insertion section, and the torch data insertion section sets the channel set in the alternative torch channel setting section 303-5, for example, voice. The Toki data in one of the memory packages (TKY-VM # 0) 302 is read from the highway bus 304-1 of the control package 304, and this is inserted into the Toki transmission channel and the highway bus 304-
Send to 1. That is, the torch data insertion unit 303-3 has a torch selection function that automatically switches between the external torch and the stored torch based on the information from the reception interruption detection unit.

The clock extraction unit 304-2 supplies a reference clock to each package and the audio writing processing unit 304-3. The voice writing processing unit 304-3 has a function of setting the recording channel of the voice memory package (TKY-VM) and writing the Toki data to the designated channel. The voice writing processing unit further has a function of producing talkie data from an audio source such as a tape recorder for producing a talkie only for the exchange system. Next, details will be described.

FIG. 3 shows the reception interruption detecting section 303-2. The detection of the reception interruption is performed by, for example, monitoring the specific bit of the talkie data from the A / D converter. For example, when the specific bit is "1", it means that the volume level is remarkably lowered, and the state of "0" does not occur n ₁ times or more in T seconds, and this state continues n ₂ times. If it does, it is judged that the external sound source is disconnected. In the embodiment, T = 4, n ₁ = 16, n ₂ =
3

The counter 401 receives the specific bit of the talkie data as an input, and clears the contents at a cycle of 4 seconds by the reference clock supplied from the clock extraction unit 304-2.
When the specific bit "1" is counted 16 times or more in 4 seconds, an output is output to the flip-flop circuit 402. After 4 seconds, the counter is reset and the next 4 seconds are monitored. This operation is repeated 3 times, and the flip-flop circuit 40
The AND circuit 405 obtains the logical product of the outputs of 2 to 404, and when all three flip-flop circuits output, it is determined that the reception has been interrupted.

Next, a method of sending the latest torch as an alternative torch will be described. By writing the toque supplied from the external sound source to the channel for the alternative toque at regular intervals, the latest toque can be sent as the alternative torch when the external sound source is interrupted. In order to automate this function, it is necessary to detect the cycle of the toke supplied from an external sound source. In addition, since there is a possibility that the external sound source is interrupted during writing to the alternate talkie channel, it is also necessary to write to the voice memory package after confirming that one cycle of talkie has been accumulated. Before and after the Toki data, for example, [370Hz--0.5
Second + 465Hz--0.5 seconds + 555Hz--0.5 seconds + 740Hz--0.5 seconds] is added, and the talkie data and this attention signal together make up one cycle. The detection of this cycle is performed by the attention sound detection unit.

FIG. 4 shows the attention sound detection unit 303-6. The analog audio signal input from the external sound source enters the band pass filter unit 801, and each band pass filter (BPF) 801-1
Extract each frequency with ~ 4. This is pulsed by the pulsing circuit 802, and the one-shot timer (WST) 803-4
Extends the pulse time. The extension of this pulse is extended to such an extent that it overlaps with the next pulse, whereby the AND circuit 803-
1 works, and one-shot timer 803-5 ~
7 and the AND circuits 803-2 to 803-3 sequentially operate. As a result, it can be confirmed that all the notes have been input in the predetermined order.

The timing measuring circuit 804 confirms that the operation intervals of the one-shot timers 803-4 to 803-7 are equal to or more than a specified value. This specified value is, for example, 0.4 seconds when the signal interval is 0.5 seconds. When the attention sound is detected, the control unit 805 advances the counter 805-1 and determines the attention sound detection frequency from the counter value. Assuming that the cycle of accumulating a torch is, for example, every 30 times, when the counter value becomes 29, the accumulation of the toque data after the A / D conversion output is started in the torch accumulator 806. Even during accumulation, the sound source interruption is monitored by the output from the reception interruption detection unit, and when the sound source interruption occurs, the counter is stopped. When the normal Toki data is accumulated without the sound source interruption, the accumulation is stopped when the counter value reaches 30, and the recording channel is set based on the channel number set in the alternate Tooki channel setting section. Transfer Toki data to. The counter is reset to end the series of operations.

[0017]

INDUSTRIAL APPLICABILITY According to the present invention, in order to guide the user of detailed information in the notification guidance service and effectively prevent, for example, an increase in the congestion of the exchange, the centralized talk system is applied to the digital exchange under the supervision and test module. In this case, it relates to an alternative torch transmission method that is necessary in the case of detecting the disconnection of the sound source in the sound source center, and automatically copies the toke data of another specified channel to the corresponding channel. I tried to send it out. According to the present invention as described above, it is not necessary to install a device such as an announcement machine as a sound source of an alternative torch, and a battery for storing the memory contents, which is required when the memory for the alternative sound source is installed in the package, is installed. Since there is no need to do so, regular maintenance is also unnecessary. It can be realized with a simple circuit in terms of circuit configuration. As a result, it is possible to omit the complicated work of the conventional manual work,
It has become possible to prevent service delays for alternative tokis and to prevent the spread of failures that may occur at each installation site of the monitoring test module of the exchange system.

Further, by detecting the attention sound, it is possible to discriminate the one-cycle torch and write the latest contents of the torch to the alternate torch channel at regular intervals, so that even if the centralized torch sound source is disconnected. It is possible to provide the latest Toki guidance. The attention sound is inserted between the voices as an electronic sound by the recording device of the Toki sound source center, so the frequency and duration are constant,
By taking advantage of the fact that noise such as voice does not enter during the sending of attention sounds, an effect that can be detected with high precision with an extremely simple circuit configuration can be obtained from the information transmitted in analog. By updating the alternative talkie, even when the sound source is cut off, there is no difference between the current situation and the contents of the talkie, or a very small state can be maintained, so that it is possible to prevent confusion in the telephone communication network.

[Brief description of drawings]

FIG. 1 is a block diagram of a conventional torch delivery device.

FIG. 2 is a block diagram of an embodiment of the torch delivery device of the present invention.

FIG. 3 is a block diagram of a reception disconnection detection unit in the embodiment of the present invention.

FIG. 4 is a block diagram of a caution sound detection unit in the embodiment of the present invention.

[Explanation of symbols]

 101 Monitoring Test Module 101-1, 2 Torch Sending Device 101-11-14 Voice Memory Package 101-15 Control Package 101-3 Time Division Switch Circuit 102 Exchange Station Monitoring Test Module 102-1 Exchange Adapter Device 102-11 Time Division Switch circuit 102-12 Highway interface 103 D70 switch 103-1 Time division switch circuit 104 Exchange module for ISDN service 104-1 Toki distribution module 301 External sound source 302 Voice memory package 303 Distribution supply package 303-1 A / D converter 303- 2 Reception disconnection detection unit 303-3 Talkie data insertion unit 303-4 Talkie transmission channel setting unit 303-5 Alternative talkie channel setting unit 303-6 Caution sound detection unit 304 Control package 304-1 Toki highway bus 304-2 Clock extraction unit 304-3 Voice writing processing unit 401 Counter 402 to 404 Flip-flop circuit 405 AND circuit 801 Bandpass filter unit 801-1 Bandpass filter 802 Pulsing circuit 803 Caution sound Sequence detection unit 803-1 to 3 AND circuit 803-4 to 7 One shot timer 804 Timing measurement circuit 805 Control unit 805-1 Counter 806 Tooki storage unit

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Akira Matsuo 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation

Claims (1)

[Claims] 1. A toke sending apparatus for notifying a user of the communication network of a state of a communication network that constitutes a switching system including a switching unit group of a communication path, wherein the torch sending apparatus is an external torch outside the switching system. A bandpass filter for detecting a specific frequency of a caution sound signal included in an external talkie from a sound source, a detection circuit for detecting a duration of the caution sound signal, and a detection circuit for detecting an appearance order of the specific frequency. Attention signal detecting means, torch accumulating means for accumulating external tokes, timing measuring means, analog / digital (A / D) converting means, and toke reception disconnection detecting means for detecting interruption of signals of the external tokes, A caution sound that has a torch selection unit that switches between an external torch and a stored torch and that signals with multiple different frequencies continue for a certain period of time. Signal, and an external toke consisting of an analog signal including a toke signal indicating the state of the communication network within a fixed time, is received from an external toque sound source outside the switching system via a transmission line, and a constant signal instructed by the timing measuring means is received. The external talky signal detected by the attention sound signal detecting means is supplied to the A / D every cycle.
When the torch reception interruption detecting means detects a toke signal interruption, the toke selecting means switches the toke to the output toke of the toke accumulating means and digitizes the digitized by the converting means. Is distributed to each exchange unit included in the exchange system.