JP2724263B2 - Tone signal transmission method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tone signal transmission system in an electronic switching system.

[0002]

2. Description of the Related Art FIG. 10 is a block diagram for explaining a tone signal transmission system in a conventional digital mobile communication network. In FIG. 10, reference numeral 10 'denotes an electronic switching system (MSC: Mobile-Service Switch).
The electronic exchange system 10 'is a mobile station (MS: Mobile).
l Station) Base station (BS) connected to 23
Is constructed by withered the 22 it.

Here, the mobile device 23 is a wireless mobile terminal. The base station 22 receives a radio signal from the mobile device 23, converts the signal into an electric signal, and outputs the electric signal to the electronic switching system 10 '. The base station 22 converts the electric signal from the electronic switching system 10' into a radio signal. Convert to signal and mobile unit 23
Output to In addition, this electronic exchange system 1
0 'is a communication path (NW) 2', control unit 21, push button tone sender [PBTS (PB tone sen)
der)] is constructed by withered its 24.

[0004] Voice transmission on the air interface between the mobile unit 23 and the network in the above-mentioned digital mobile communication network is performed by a high-efficiency voice coding scheme that compresses the data to, for example, about 10 Kbits / sec. In Japan, VSELP is used as this audio coding method.
The method is adopted. In such a high-efficiency speech coding system, a PB sound transmission request is transmitted to a network through an out-of-band channel, and the network transmits a PB sound based on the PB sound transmission request.

This digital mobile communication network employs ISDN-compliant call control signals in the air interface. For this reason, the PB sound transmission request is made by the key.
INFO (i) including the pad facility information element
nformation) message, the mobile station 2
3 to the electronic switching system 10 '. And
The exchange transmits the communication path to the push button tone sender 24 and gives the PB sound information to be transmitted to the push button tone sender 24, thereby transmitting the PB sound.

When the PB sound transmission request arrives, the electronic exchange system 10 'captures the push button tone sender 24 and transmits the PB sound, and then releases the push button tone sender 24. Therefore, the behavior of the subscriber is grasped, and the number of implemented pushbutton tone senders is obtained by traffic calculation.

[0007]

However, such a conventional tone signal transmission system has the following problems. (1) In order to capture and release the push button tone sender, there is a time and effort to determine the number of mounted devices by traffic calculation. In addition, there is a problem of a resource block due to a calculation problem. (2) Since the sound from the mobile device affects the PB sound, noise is included in the PB sound. (3) Since the communication path from the exchange to the mobile station (downward direction) is disconnected, the voice (guidance for message service etc.) from the PB sound receiving station may be interrupted. (4) Further, depending on the characteristics of the PB receiver, it is troublesome to adjust the PB sound transmission time and the PB sound transmission interval.

The present invention has been made in view of such a problem, and solves the problem of the resource block due to the calculation problem by eliminating the trouble of calculating the number of implementations by traffic calculation. To prevent interruption of the sound (guidance for message service etc.) from the PB sound receiving station.
It is an object of the present invention to provide a tone signal transmission system capable of adjusting a B sound transmission time and a PB sound transmission interval without hardware improvement.

[0009]

An electronic switching system 10 for implementing the tone signal transmission system of the present invention comprises:
As shown in FIGS. 1 to 3, a time switch 3 for transmitting a tone signal to a communication path and a tone signal source 8
Via the exchange processing unit 2 is constructed by fixedly withered its a tone signal supply means 4 for connecting the path to the time switch 3 (claim 1).

FIG. 1 is a principle block diagram in the case where the time switch 3 is arranged in the subscriber control unit 1A in claim 1. That is, in FIG. 1, the electronic switching system 10 includes a subscriber control unit 1A in which a time switch 3 is arranged, an exchange processing unit 2, a tone signal source 8, and a tone signal supply unit 4, Further, a subscriber terminal 23 is connected to the electronic exchange system 10 (claim 2).

FIG. 2 is a principle block diagram in the case where the time switch 3 is arranged in the primary time switch 5s of the exchange processing unit 2A. That is, in FIG. 2, first, the electronic exchange system 10
Is composed of a subscriber control unit 1B and an exchange processing unit 2A, and a subscriber terminal 23 is connected to the electronic exchange system 10.

The switching section 2A includes a primary time switch 5s in which the time switch 3 is disposed, a secondary time switch 6, a space switch 7, and a tone signal source 8. , The time switch 3 for transmitting the tone signal to the communication path is a primary time switch 5s.
(Claim 3). FIG. 3 is a principle block diagram in the case where the time switch 3 is arranged in the secondary time switch 6s of the exchange processing unit 2B in claim 1. That is, in FIG. 3, the electronic exchange system 10 is composed of a subscriber control unit 1B-1 and an exchange processing unit 2B.
0 is connected to the subscriber terminal 23.

The exchange processing unit 2B comprises a secondary time switch 6s in which a primary time switch 5 and a time switch 3 are arranged, a space switch 7, and a tone signal source 8. , The time switch 3 for transmitting the tone signal to the communication path is a secondary time switch 6s.
(Claim 4).

[0014]

In the tone signal transmission system of the present invention shown in FIGS. 1, 2 and 3, upon receiving a subscriber's tone signal transmission request, the time switch 3 is controlled and supplied to the time switch 3. The tone signal is connected to a one-way communication path from the subscriber to transmit the tone signal. That is, the tone signal supply means 4 switches the tone signal from the tone signal source 8 to the exchange processing.
After the path is fixedly connected to the time switch 3 via the control unit 2, the time switch 3 sends a tone signal to the communication path (the above claims).

[0015]

Embodiments of the present invention will be described below with reference to the drawings. (A) Description of First Embodiment FIG. 4 is a block diagram showing a first embodiment of the present invention.
FIG. 4 shows a PB sound transmission system in which a time switch (time switch) is arranged in the subscriber control device. That is, in the embodiment shown in FIG. 4, the electronic exchange system 10 includes a subscriber control unit [subscriber control unit (LC)] 1A and a communication path [exchange processing unit (N
W)] 2.

Here, the subscriber control device 1A analyzes a received message, and comprises a control time switch (LSW) 11s and a baseband device (BB) 12
It is configured with the following. First, the control time switch 11 s transmits a PCM-encoded signal (in addition to a voice signal,
It also includes control signals such as tone signals. same as below. The control time switch 11s also has a function of a time switch (time switch) for transmitting a PB sound (tone signal) to a communication path, as described later. . The baseband device 12 is a device for interworking with a base station.

The communication path 2 is a PCM on the highway.
The coded signals are exchanged by exchanging time slot positions. And this call path 2
Primary time switch 5a, primary time switch 5
b, secondary-side time switch 6a, secondary-side time switch 6b and space switch 7, PB sound transmitter (tone signal source) 8, subscriber line trunk 9
A, 9B, trunk 13, and tone signal supply means 14.

Here, the primary time switch 5a replaces the time slot position of a signal between the subscriber line trunk 9B and the space switch 7. The primary time switch 5b is connected to the trunk 13
The time slot position of the signal between the space switch 7 and the space switch 7 is switched. The secondary side time switch 6a
Space switch 7 and subscriber line trunk 9A
Alternatively, the time slot position of the signal between 9B is replaced. Also, the secondary side time switch 6b
Replaces the time slot position of the signal between the space switch 7 and the trunk 13.

The space switch 7 forms a communication path between the primary time switch 5a, the primary time switch 5b and the secondary time switch 6a, the secondary time switch 6b, and has the same signal time. A switch for exchanging signals between slot numbers. Subscribers
The line trunk 9A transmits the signal to the secondary side time switch 6
a between the control time switch 11s and the control time switch 11s, and the subscriber line trunk 9B supplies the signal to the control time switch 11s and the primary time switch 5a through the mediation between the control time switch 11s and the primary time switch 5a. belongs to.

The trunk 13 mediates between the secondary time switch 6b of the communication path 2 and the opposite trunk of another switching center or the opposite trunk of the voice storage device (VSE), so that the mobile station ( A call from a subscriber terminal is connected between these devices. By the way, the tone signal supply means 14 is connected to the secondary time switch 6a of the communication path 2 and the control time switch 11 of the subscriber control device 1A.
and s. That is,
The tone signal supply means 14 includes a subscriber line trunk 9A. A fixed path is connected from the PB sound oscillator 8 to the time switch 11s to control the PB sound in a required time slot. It can be supplied to the switch 11s. In addition, the subscribers in the tone signal supply means 14
The time slots of the line trunk 9A are required for the number of PB sounds, and are used for a maximum of 16 SLTs.

With such a configuration, the PB from the subscriber
When a sound transmission request is received, the control time switch 11s is controlled, the PB sound supplied to the control time switch 11s is connected to a one-way communication path from the subscriber, and the PB sound is transmitted. That is, the INFO message as a PB sound transmission request is transmitted from the mobile station via the base station to the subscriber control unit 1A.
Is interworked by the baseband device 12 of the subscriber control device 1A.

Thereafter, this message is analyzed by the subscriber control device 1A, and based on the result, the control time switch 11s in the subscriber control device 1A is controlled and connected to the tone signal supply means 14. Then, an appropriate PB sound path is fixedly connected from the PB sound oscillator 8 to the control time switch 11s by the tone signal supply means 14, and a predetermined PB sound is transmitted.

That is, the PB sound from the PB sound oscillator 8 is
After being processed by the primary time switch 5a, the space switch 7, the secondary time switch 6a, and further through the tone signal supply means 14 and these devices,
It is sent to the control time switch 11s. Then, the PB sound output to the control time switch 11s is transmitted to the communication path, incorporated into an appropriate time slot, and output to the subscriber line trunk 9B of the communication path 2.

Then, the control time switch 11s connects the path to the original communication path after a specific time has elapsed, that is, after timing is set so that the PB receiver does not perform a false detection. After that, control time switch 11s
Will also return to a normal call state after a certain period of time so that the PB receiver does not make a false detection. Also, this P
If a PB sound transmission request arrives during the B sound transmission, digits to be transmitted (numerals) are stored in the control block, and after the pause is completed, the control time switch 11s again operates the control time switch 11s.
Connect to an appropriate PB sound path and send out PB sound.

As described above, in the electronic switching system 10, the control time switch 11s for transmitting the PB sound to the communication path and the tone signal supply means for fixedly connecting the path from the PB sound oscillator 8 to the control time switch 11s. 1
When receiving the PB sound transmission request from the subscriber, the control time switch 11s is controlled, and the PB sound supplied to the control time switch 11s is connected to a one-way communication path from the subscriber. Transmitting the PB sound, and
The following effects can be obtained by configuring the above-described electronic switching system 10 with the subscriber control device 1A and the communication path 2 and disposing the time switch in the subscriber control device 1A.

That is, the PB sound can be transmitted only by path control without using the PB sound transmission device.
The transmission time pause time satisfying the characteristics of the B receiving device can be easily changed. As a result, it becomes unnecessary to calculate the number of mounted devices by traffic calculation, and the station design becomes easier than in the past. In addition, control can be performed regardless of the type of the opposing trunk, and processing structurability is improved. Furthermore, since the path is one-way, it is possible to prevent interruption of the sound from the exchange to the mobile station. (B) Description of Second Embodiment Next, a description will be given of an embodiment in which a time switch is arranged in a primary time switch of a communication channel with reference to FIG.

FIG. 5 is a block diagram showing an embodiment of the network loopback system according to the present invention. In FIG. 5, reference numeral 1B-1 denotes a subscriber control device, and this subscriber control device 1B-1 is connected to a communication path 2A-1. Here, the subscriber control device 1B-1 analyzes a received message and performs an appropriate process, and includes a control time switch (LSW) 11 and a baseband device 12.

The control time switch 11 switches the time slot position of the PCM-coded signal between the baseband device 12 and the communication path 2A-1. The baseband device 12 is the same as that described in the previous example. The communication path 2A-1 is a PC on the highway similarly to the communication path 2 described in the above example.
The M-encoded audio signal is exchanged by exchanging time slot positions.

For this reason, the communication path 2A-1 is connected to the primary time switch 5as, the primary time switch 5b, the secondary time switch 6a, and the secondary time switch 6a.
b, the spatial switch 7, the PB sound oscillator 8, the subscriber line trunk 9B, the trunk 13, and the network loopback (NW
-LPB) 15.

Here, the primary time switch 5as is
It has a function of a time switch for transmitting a tone signal to a call path. The other primary time switch 5b, secondary time switch 6a, secondary time switch 6b, space switch 7, subscriber
Line trunk 9B, trunk 13, PB sound oscillator 8
Is similar to that of the first embodiment.

The network loopback 15 is
It is configured as tone signal supply means for supplying a PB sound to the primary time switch 5as. With such a configuration, as in the previous example, when the subscriber receives a PB sound transmission request, the primary time switch 5as is controlled to
The PB sound supplied to the primary time switch 5as is connected to a one-way communication path from the subscriber to transmit the PB sound.

That is, the INFO message, which is a PB sound transmission request, is transmitted from the mobile station via the base station to the subscriber control unit 1.
When it arrives at B-1, it is interworked by the baseband device 12 of the subscriber control device 1B-1. Thereafter, this message is analyzed by the subscriber control device 1B-1, and based on the result, the primary time switch 5as is controlled, connected to the network loopback 15, and an appropriate PB sound path is connected. You.

The output from the PB sound oscillator 8 is 1
The PB sound that has been processed by these devices through the secondary time switch 5as, the space switch 7, and the secondary time switch 6a is transmitted to the network loopback 1
5 is looped back by the primary side time switch 5
sent to as. The predetermined PB sound output to the primary-side time switch 5as in this manner is sent out to a communication path and incorporated into an appropriate time slot.
The signal is output to the trunk via the space switch 7, the secondary time switch 6b and the trunk 13.

After that, the primary time switch 5as
Connects the path to the original call path, as in the previous example,
Thereafter, the state returns to the normal call state. Also, when the PB sound transmission request arrives during the transmission of the PB sound, the same processing as in the above example is performed. Also, primary time switch 5as
When a time switch of random write / sequential read is used, the PB sound path can be connected to only one call during transmission of the PB sound.

However, in this method, the PB sound path is
The occupation time is occupied only when sound is transmitted, so that the occupation time is much shorter than that of a system that captures hardware such as a push button sender. Therefore, a result close to the effect of the first embodiment can be obtained. As described above, in the electronic switching system 10, the primary time switch 5as for transmitting the PB sound to the communication path and the PB sound oscillator 8
A network loopback 15 for fixedly connecting a path to the next time switch 5as, and the subscriber's PB
When the sound transmission request is received, the primary time switch 5as is controlled to control the P supplied to the primary time switch 5as.
Connect the B tone to the one-way call path from the subscriber,
To transmit sound, and the above-mentioned electronic switching system 10 is composed of the subscriber control device 1B-1 and the communication path 2A-1, and the time switch is a primary time switch 5as of the communication path 2A-1. The following effects can be obtained by arranging them in.

That is, the call processor (CP) on the subscriber side
By controlling the primary time switch in R), tone transmission can be realized. As a result, only devised software without changing hardware, it is possible to control which does not depend on the kind of the opposite trunk. This allows traffic
It is not necessary to calculate the number of device
Since the B sound transmission device is not used, the station design becomes easier than before.

Further, since the path is a one-way path, no sound is cut off from the exchange to the mobile station. Further, since the PB sound can be transmitted only by the path control, the transmission time pause time that satisfies the characteristics of the PB receiving device can be easily changed. (C) Description of Third Embodiment Another embodiment in which a time switch is arranged on a primary time switch of a communication channel will be described with reference to FIG.

FIG. 6 shows a MULA (MU) according to the present invention.
FIG. 6 is a block diagram showing an embodiment of a fixed hunt system (Lti connection Adapter).
, 1B-2 is a subscriber control device, and this subscriber control device 1B-2 is connected to the communication path 2A-2. Here, the subscriber control device 1B-2 is configured by the control time switch 11 and the baseband device 12 as in the case of FIG. 5 described above, and further includes a MULA 16 as tone signal supply means. In addition, it is configured.

The control time switch 11 and the base band 12 are the same as those in FIG.
The MULA 16 is provided with two subscriber line trunks 9C and 9D.
The input side of the MULA 16 is the communication path 2A-
2 is connected to the secondary side time switch 6a, and the output side is the primary side time switch 5as of the communication path 2A-2.
And a control time switch 11 is interposed therebetween.

The communication path 2A-2 is the same as that shown in FIG. 5 except that the network loopback is removed. With such a configuration, when the subscriber receives a request for transmitting the PB sound as in the previous example, the primary time switch 5as is controlled to control the primary time switch 5a.
s is connected to a one-way communication path from the subscriber, and the PB sound is transmitted.

That is, the INFO message, which is a request for transmitting a PB sound, is transmitted from the mobile station via the base station to the subscriber control device 1.
When B-2 is reached, the description will be as follows. That is,
This message is processed by the subscriber controller 1B-2 in the same manner as in the case of FIG. 5, and based on the detection result,
The MULA 16 is controlled by controlling the primary time switch 5as.
Is fixedly connected to the appropriate PB sound path. And P
Primary time switch 5a output from B sound oscillator 8
The PB sound processed by each of these devices via the s, the space switch 7, the secondary time switch 6a and the MULA 16 is transmitted to the primary time switch 5as.

Thus, the primary time switch 5
The predetermined PB sound output to "as" is transmitted to the communication path, incorporated in an appropriate time slot, and output to the trunk line side as in the case of FIG. Thereafter, the primary time switch 5as connects the path to the original call path and then returns to the normal call state, as in the case of FIG. Also, when a PB sound transmission request arrives during this PB sound transmission, the same processing as in the case of FIG. 5 is performed.

As described above, in the electronic switching system 10, the primary time switch 5as for transmitting the PB sound to the communication path, and the path is fixedly connected from the PB sound oscillator 8 to the primary time switch 5as. Upon receiving the subscriber's PB sound transmission request, the MULA 16 is controlled and the primary time switch 5as is controlled so that the PB sound supplied to the primary time switch 5as is transferred to the one-way communication path from the subscriber. Connecting and transmitting the PB sound, and connecting the electronic switching system 10 to the subscriber control unit 1A-1.
And the communication path 2A-1, and the time switch is arranged on the primary time switch 5A of the communication path 2A-1, so that the same effect as the effect of the embodiment in FIG. 5 can be obtained. (D) Description of Fourth Embodiment FIG. 7 is a block diagram showing an embodiment in which the time switch according to the present invention is arranged on a secondary time switch of a communication path. Furthermore, FIG. 7 is a block diagram showing an embodiment of the output side control system in the present invention. In FIG. 7, 1B-1 is a subscriber control device, and this subscriber control device 1B-1 is , And communication path 2B-1.

Here, the subscriber control device 1B-1 is the same as that shown in FIG. Call path 2B-1
Is a secondary time switch 6bs instead of the primary time switch 5as of the communication path 2A-2 in FIG.
And a function of a time switch for transmitting a tone signal to a communication path. In addition, communication path 2B-
1 is such that the PB sound from the PB sound oscillator 8 of the communication path 2A-2 in FIG. 6 of the previous example is transmitted to the secondary time switch 6bs via the primary time switch 5b and the space switch 7. Connect.

With this configuration, when a PB sound transmission request is received from the subscriber, the PB sound processed by the PB sound oscillator 8 via the primary side time switch 5b and the space switch 7 and processed by each of these devices. The sound is supplied to the secondary side time switch 6bs and connected to a one-way communication path from the subscriber. After that, the PB sound is incorporated into the time slot of the audio signal and transmitted to the trunk line side.

Thereafter, the secondary side time switch 6bs
Connects the path to the original call path and returns to the normal call state, as in the previous case. Also, when a PB sound transmission request arrives during the transmission of the PB sound, the same processing as in the previous example is performed. When the control is performed by a call processor that accommodates a trunk facing another switching center or a voice storage device, the following is performed. That is, as shown in FIG. 8, when a PB sound transmission request is received from the subscriber by the MAP signal, the secondary time switch 6b of the communication path 2B-1
s is controlled to connect an appropriate PB sound path.

The PB sound from the PB sound oscillator 8 via the primary time switch 5b and the space switch 7 and processed by each of these devices is supplied to the secondary time switch 6bs to join. Connected to a one-way call path from the caller. After that, the PB sound is incorporated into the time slot of the audio signal and transmitted to the trunk line side.

Thereafter, the secondary side time switch 6bs
Connects the path to the original call path and then returns to the normal call state, as in the previous case. Also, this P
When a PB sound transmission request arrives during the B sound transmission, the same processing as in the previous example is performed. Thus, the electronic exchange system 1
0, a secondary time switch 6bs for transmitting a PB sound to the communication path, and tone signal supply means for fixedly connecting the path from the PB sound oscillator 8 to the secondary time switch 6bs. When the PB sound transmission request is received, the secondary time switch 6bs is controlled, the PB sound supplied to the secondary time switch 6bs is connected to a one-way communication path from the subscriber, and the PB sound is transmitted. Transmission, and the above-described electronic switching system 10 is composed of the subscriber control device 1B-1 and the communication path 2B-1, and the time switch is a secondary time switch 6bs of the communication path 2B-1.
, The same result as the effect of the embodiment in FIG. 5 can be obtained.

Further, other than the PB sound (RBT,
CT, NUT, etc.), and even when a PB sound transmission request is received by a subscriber's MAP signal, a tone can be transmitted by the call processor. (E) Description of Fifth Embodiment FIG. 9 is a block diagram showing an embodiment based on the return trunk side control of the output side control system in the present invention.
In FIG. 9, 1B-1 is a subscriber control device,
This subscriber control device 1B-1 is connected to a communication path 2B-2.

Here, the subscriber control device 1B-1 is the same as that in FIG. Call path 2B-2
Is a secondary time switch 6as instead of the secondary time switch 6bs of the communication path 2B-1 in FIG.
And a function of a time switch for transmitting a tone signal to a communication path. In addition, communication path 2B-
2 so that the PB sound from the PB sound oscillator 8 of the communication path 2A-2 in FIG. 8 of the previous example is transmitted to the secondary time switch 6as via the primary time switch 5a and the space switch 7. Connected. Furthermore, call path 2
The primary time switch 5a and the secondary time switch 6bs of B-2 are connected by a return trunk 17.

Incidentally, 9E and 9F are subscriber line trunks. With such a configuration, when the INFO message that is the PB sound transmission request is received, the communication path 2B
The -2 secondary side time switch 6as is controlled, and an appropriate PB sound path is connected. Then, the PB sound from the PB sound oscillator 8 via the primary side time switch 5a and the space switch 7 and processed by each of these devices,
The signal is supplied to the secondary side time switch 6as and is connected to a one-way communication path from the subscriber. After that, this PB
The sound is incorporated into the time slot of the audio signal and transmitted to the return trunk 17.

Then, by the return trunk 17,
The audio signal containing the PB sound is sent to the primary time switch 5a, and then sent to the space switch 7 and the secondary time switch 6b to be transmitted to the trunk line. The signal sent from the trunk line is received by the trunk 13 and then output to the return trunk 17 via the primary time switch 5b, the space switch 7, and the secondary time switch 6as. Is done.

This signal is sent back to the trunk 1
7, is turned back to a primary time switch 5a, and further a space switch 7 and a secondary time switch 6as.
Sent to. Thereafter, this signal is transmitted to the subscriber control device 1B-1 and then transmitted to the subscriber side. After that, the secondary side time switch 6a
After the path is connected to the original communication path, the state returns to the normal communication state, and the same processing as in the previous example is performed when a PB sound transmission request arrives during the PB sound transmission.

In this way, after being processed by each of these devices, the audio signal is sent to the subscriber control unit 1B-1, and after being processed, is sent to the subscriber side via this. Is sent. As described above, in the electronic switching system 10, the secondary time switch 6as for transmitting the PB sound to the communication path, and the return trunk 17 for fixedly connecting the path from the PB sound oscillator 8 to the secondary time switch 6as. When the subscriber receives a PB sound transmission request, the secondary time switch 6as is controlled to connect the PB sound supplied to the secondary time switch 6as to a one-way communication path from the subscriber. To transmit the PB sound, and to configure the above-described electronic switching system 10 with the subscriber control device 1B-1 and the communication path 2B-1 and to set the time switch to the secondary of the communication path 2B-1. Side time switch 6as
, The same result as the effect of the embodiment in FIG. 5 can be obtained. And furthermore, trunk 1
7 allows the use of the PB tone using the call to be separated, thereby enabling the incoming call processor (CPR in FIG. 9).
i) can be controlled. (F) Others The PB sound is supplied from the exchange to the base station, and the base station sends
If a PB sound transmission request arrives, a method of switching the path is also possible.

[0055]

As described above in detail, according to the tone signal transmission system of the present invention, in an electronic switching system having an exchange processing unit, a time switch for transmitting a tone signal to a communication path and a tone signal transmission. From the source through the exchange processing unit
And a tone signal supply means for fixedly connecting a path to the time switch, and upon receiving a subscriber's tone signal transmission request, controlling the time switch to transmit the tone signal supplied to the time switch from the subscriber. And a tone signal is transmitted (Claim 1). In the above-described claim 1, the electronic switching system is composed of a subscriber control unit and a switching processing unit. By arranging the time switch in the subscriber control unit (claim 2),
Alternatively, in claim 1, the electronic switching system comprises a subscriber control unit and an exchange processing unit, and the time switch is disposed on a primary time switch of the exchange processing unit (claim 3). By configuring the switching system with the subscriber control unit and the switching processing unit and arranging the time switch on the secondary time switch of the switching processing unit (claim 4), the following advantages can be obtained.

That is, the trouble of calculating the number of packages by traffic calculation can be omitted, and there is no problem of the resource block due to the conventional calculation problem. Further, no noise is generated in the PB sound, and the sound (guidance such as a message service) from the PB sound receiving station can be transmitted without interruption. In addition, the PB sound transmission time and the PB sound transmission interval can be adjusted without improving hardware even in PB receivers of all characteristics.

[Brief description of the drawings]

FIG. 1 is a principle block diagram of the present invention.

FIG. 2 is a principle block diagram of the present invention.

FIG. 3 is a principle block diagram of the present invention.

FIG. 4 is a block diagram showing an embodiment of a PB sound transmission system controlled by a subscriber control device according to the present invention.

FIG. 5 is a block diagram showing an embodiment of a network loopback method according to the present invention.

FIG. 6 is a block diagram showing an embodiment of a MULA fixed hunt system according to the present invention.

FIG. 7 is a block diagram showing an embodiment of a delivery control method according to the present invention.

FIG. 8 is a block diagram showing the operation of the embodiment of the exit side control system according to the present invention.

FIG. 9 is a block diagram showing an embodiment in the case of the return trunk side control of the output side control system according to the present invention.

FIG. 10 is a block diagram showing a conventional example.

[Explanation of symbols]

1, 1A, 1B, 1B-1, 1B-2 Subscriber control unit 2, 2 ', 2A, 2A-1, 2A-2, 2B, 2B-
1, 2B-2 communication path 3 time switch 4, 14 tone signal supply means 5, 5a, 5as, 5b, 5bs, 5s primary time switch 6, 6s, 6a, 6as, 6b, 6bs secondary time switch 7 Space switch 8 PB sound oscillator (tone signal oscillation source) 9A to 9F Subscriber line trunk 10, 10 'Electronic exchange system 11, 11s Control time switch 12 Baseband device 13 Trunk 15 Network loopback 16 MULA 17 Return trunk 21 Control unit 22 Base Station 23 Mobile Station 24 Push Button Tone Sender

Claims (4)

(57) [Claims] 1. A Oite <br/> the electronic switching system having an exchange processing unit, time switch for sending tone signals the call path
When, and a tone signal supply means to connect the said time fixedly path to Sui <br/> pitch via the tone signal source or al the exchange processing unit, receiving a tone signal transmission request of the subscriber And the time switch
By controlling the switch, a tone signal supplied to said time switch connected to the one-way speech path from the subscriber, characterized by transmitting a tone signal, tone signal transmission method. The method according to claim 2] electronic exchange system, a subscriber control unit
Constituted by the said exchange processing unit, characterized in that the switch said time was placed in the subscriber control unit, tone signal transmission system of claim 1, wherein. The method according to claim 3] electronic exchange system, a subscriber control unit
Constituted by the said exchange processing unit, the replacement processing switch said time
Characterized in that arranged on the primary side time switch parts,
The tone signal transmission system according to claim 1. The method according to claim 4] electronic exchange system, a subscriber control unit
Constituted by the said exchange processing unit, the replacement processing switch said time
Characterized in that arranged on the secondary side time switch parts,
The tone signal transmission system according to claim 1.