JPS5839159A - Time division transmission system for tone - Google Patents

Abstract

PURPOSE:To make it unnecessary to multiplex a highway for service and a highway for tone, by providing a time switch on the highway for tone and switching the output of this time switch and information on the highway for service by a selector. CONSTITUTION:Information on a highway 3 for tone is replaced with tone information, which should be transmitted to the same channel as a channel of a highway 3 for service to which the tone should be transmitted, by a switch control memory 11, and this tone information is outputted completely synchronously with information on the highway 2 for service. From a selector circuit 12, information of the highway 2 for service is normally outputted but information on the highway for tone is outputted for the input from a select signal line 13. Consequently, the select signal is transmitted at the timing synchronous with the channel of the highway 2 for service, to which the tone should be transmitted, from the switch control memory 11 to output information on the highway 3 for tone only to this channel.

Description

DETAILED DESCRIPTION OF THE INVENTION This article relates to a time-division shadow signal sound transmission system, in particular a
This invention relates to a one-time type signal tone transmission system that does not require multiplexing of a signal tone for vi and a signal tone.

In time division telephone switching equipment, %1 as shown in the 1st WJ.
Multiplexing circuit 14 for audio t# messages from multiple telephones 9.9
Multiplex with 1. It is transmitted to the time division communication path 1 on the communication highway 16, and after exchanging the channels on the communication network 15, the output communication communication network 2 and the sound source -
Calling signal from road number - A signal in which signal tones such as a ring tone and dial tone are multiplexed.The signal is further multiplexed by the doway 32 alarm tone sending circuit 20, and the time switch is set. From the voice channel VH social signal tone channel multiplexed part 5a
IIa separates and sends out to each telephone @9.0 - Time division communication path at 111 & - 1. The signal tone sending circuit 20 both uses a memory switch.

Me%s Switch Co., Ltd., as shown in Figure 2, between the input way 1δ and the output way 2 there are 17 lines 1/311.
! f (audio) data bus mem%91 that stores data
On the other hand, the data bus memo 916's address holding memory 916 is provided under timing control (by the critter 21 synchronized with the iway data and the callan #19 that counts it), and the selector 18 is used to control the timing of the data. The output of the address holding memory 17 is supplied to the data bus memory 910 during reading (b) and writing (b). In this way, in the time division communication path 1, the data Dti of the channel on the incoming highway 16 (time slit 1i) is transferred to the channel on the outgoing highway 2 (time suit 1j), and the data Dti of the channel on the incoming highway 16 (time slit 1j) is transferred to the channel on the incoming highway 16 (time slit 1j). Data D of suit tj)? J to the exit highway 2 channel (time slit 1.), respectively. In addition, in the case of the signal tone selection circuit 20,
Both the multiplexed call data and the signal tone data are written into the data bus memory 16 of the time switch, and one of the data is transferred to the corresponding channel (time suit) 1.
). In this way, conventionally, in the time-minute w-type telephone exchange, which has separate highways for speech and highways for signal tones, W@
In order to send any signal tone to any channel of the highway, write the information of the communication highway and the information of the signal tone N highway to the time switch (data bus 1 memory) and 7, and -shift. A signal tone is sent by reading out information from one of the signals.The third circuit is an internal configuration diagram of the signal tone sending circuit in the first flash.Conventional signal tone output circuit 20#i, msm&- As shown, the information numbers transmitted by the speech highway 2 and the signal tone highway 6 are multiplexed by a multiplex lI6, and the information signal outputted from the multiplex circuit 5 is a signal tone tI11.
The time division communication path is controlled by the time switch 6 which converts the time suit of 1) and the switch control memo 9 which controls the continuation of mL written in the time switch 6. or #j Output multiplexed audio information and **
*The multiplexed signal sound information output from the road number is the multiplexed signal sound information output from the road number
The messages are multiplexed and loaded into a predetermined address of the information time switch 0 for each channel. On the other hand, time switch 6 &: So I met with the writing,
Any signal tone information of the signal tone highway is inserted into any channel of the speech highway by reading it in an arbitrary order according to the instructions of the switch control system.

Multiplexed tt outputted from the time switch 6-11-! @ is separated for each channel by the multiplexing m* path 6), so multiple telephones 9.9 correspond to each channel on a one-to-one basis.
Any signal tone can be sent to any of the telephones.

However, in the signal tone sending circuit 20 shown in FIG. 3, the time switcher 6 performs an operation of writing information for two channels of audio information and signal tone information within the time suit for one channel of the telephone communication. Therefore, it is required to increase the operating speed of the time switch 6 and increase the memo capacity. Also, Highway 2 for calls and ^iway 8 for signal tones.
A multiplex circuit is required to multiplex the data.

Furthermore, since the information on the communication highway 2 passes through the time switch 6, a delay occurs in the communication channel, which causes a deterioration in communication quality.

It is an object of the present invention to eliminate these conventional drawbacks, eliminate the need to increase the operating speed of the time switch, eliminate the delay for a communication channel, and prevent the quality of communication from being affected. It is an object of the present invention to provide a time-division signal sound transmission system that simplifies the circuit configuration by eliminating the need for multiplexing a signal highway and a signal sound layer toyway.

The present invention's time-sharing signal tone transmission system is the same speed as the telephone highway and the WIN^way.

In a time-division telephone exchange having a signal tone highway in which multiple signal tones are multiplexed with the same multiplicity, a time switch is provided on the signal tone highway, and the output of the acid time switch and the above-mentioned call tone are connected. The present invention is characterized in that an arbitrary signal tone on the above-mentioned signal tone dowway is sent to an arbitrary channel on the above-mentioned speech dowway by switching the signal tones using a single circuit.

Hereinafter, the embodiment of the present invention will be explained based on 111ii1. Figure 0 is a diagram of the signal tone sending circuit showing the embodiment of this IIm, and Figure 86 is a diagram of the signal tone in the circuit of 4H. This is a time chart of the sound sending operation.

4th W! The signal tone sending circuit 20 of i is a time switch 10
, a switch control memory 911, and a selector circuit 12, and a new select signal line 13 is provided between the switch control memory 11 and the selector circuit 12.Other symbols in FIG. The details are the same as in FIG.

The signal highway 3 is connected to the time switch 10;
After the switch control memo 911 replaces the signal tone information to be transmitted to the same channel as the channel to which the signal tone of the telephone highway 2 is to be transmitted, it is output in complete synchronization with the signal tone of the telephone highway 2.

On the other hand, both the speech highway 2 and the signal tone highway 3 output from the time switch 10 are connected to the selector circuit 12.
The information on the highway 2 for communication is normally outputted, but when the select signal 1113 is inputted, the information on the highway δ for signal tone is outputted.

ζζ, since the communication highway 2 and the signal tone highway 3 are completely synchronized, the switch controller e911 sends out the signal tone of the communication highway 1 and the signal tone 2. If a select signal is sent to the signal line 13 at the terminal, information on the signal tone highway is output for only one channel.

Further, the multiplexing information output from the selector # circuit 12 is separated for each channel by the demultiplexing circuit 8, and an arbitrary signal is sent to any telephone among the telephones 9, 9 corresponding to each channel and 1 to 1. Sound is transmitted.

Next, a specific example of the flow of each information when carrying out the present invention will be explained with reference to FIGS. 4 and 6. I will clarify.

5th WJFf, when the multiplicity of the speech highway and the signal tone highway is 1O, and the signal tone multiplexed on the signal tone highway is 1011@, it is shown as 9 and 1 in Fig. 4). This is a time chart schematically showing the flow of information on each highway at (branch) Shichita # circuit 12, which is an information string on the highway for communication on the input side of circuit 12, and channel OH8. # In response to [,, Mu~J
The audio information indicated by is lined up. Further, (→ is an information string on the signal tone highway on the input side of the time switch 10, in which signal tone information a to j of the 10th grade are lined up corresponding to channels α, to Tsukuda 3.

ζ Now consider the case where a signal tone indicated by a on the signal tone highway is sent to a telephone compatible with Nayanel α. On the input side of the time switch, the signal tone information is transmitted as shown in (b). Since a is stored in the channel OH8, the switch control memory 11 also instructs the time switch 10 to read the signal tone information a in the time slot of the channel Tsukuda, and at the same time, the 1 selector circuit 1
Channel GEI through select signal string 13 for 2
By transmitting the select signal of the signal tone highway for the time corresponding to the time slot of , the signal tone information a is inserted only in the channel plate, as shown in 1) at the output side of the selector circuit 12. The sequence is output, and the signal tone a is sent to the corresponding telephone set on channel (!H).

The selector circuit 12 has a logic in which a plurality of AND gates corresponding to the speech channel and the signal tone channel are respectively opened and closed by the input of the signal line 13.
As explained above, according to the present invention, only the information on the signal highway can be written and read/unloaded using a time switch. Since the operation speed is the same as that of the time switch, high-speed operation is required. In addition, since the call does not go through the H☆EI time switch, there is almost no delay in the call channel, and the call quality does not deteriorate. Furthermore, since there is no need to multiplex the speech highway and the signal tone highway, there is no need for multiplexed circuits and the single circuit configuration is simplified.

[Brief explanation of the drawing]

Figure 1: Structure of a time-division telephone exchange (Figure 1) Part 2 is a schematic diagram of the memory switch in Figure 1, Figure 3 is a block diagram of a conventional signal tone transmission circuit, and Figure 4 is a schematic diagram of the memory switch in Figure 1. FIG. 5 is a block diagram of a signal tone sending circuit showing an embodiment of the present invention. FIG. 5 is a time chart of the signal tone sending operation in the circuit of FIG. 11 time division type communication path, 28 8 way for communication, ^way for 3G signal tone, 8 sound source circuit, 58 multiplex circuit, 6,
10: Time switch, 7 e l 1 t switch control menu, 8! demultiplexing circuit, 9tQs telephone,
12! Selector circuit, 13: Select signal line, 20,
20! Signal sound exit circuit・゛・i・・ 11th field, Figure 2

Claims (1)

[Claims] In an hour-minute 11i-type telephone exchange, which has a highway for one talk, and a highway for decoding sounds that multiplexes a plurality of signal tones with a multiplicity of 92 degrees with the highway for calls, A time switch is provided on the highway for the signal building, and the output of the time switch is switched between the output of the time switch and the highway for communication using selector 1, and any false signal tone on the doway for the signal tone is switched between the output of the time switch and the highway for communication. A time-division decoding sound transmission method that is characterized by transmitting to any channel on the doway.