JPH02151146A - Service channel transmission system - Google Patents

Abstract

PURPOSE:To attain effective utilization of a service transmission line and to simplify the channel changeover by adding a detection section and a switch section and adding a function sending a selection signal being the result of detection by the detection section to an opposite station to a signal processing section. CONSTITUTION:A detection section 3 detects whether or not a plug 1 of a head set is plugged into a hack 2 and sends a selection signal being the result of detection to a switch section 5 and a signal processing section 8. A switch section 5 based on the selection signal controls the service channel signal being a voice signal to be sent to an opposite station via a multiplex section 7 when the plug 1 is plugged in. When the plug 1 is not plugged in, the switch section 6 is controlled so that one digital channel signal at a digital signal input output terminal 6 is sent to the opposite station via the multiplex section 7. Moreover, the selection signal being the result of detection sent to a signal processing section 8 is sent to the opposite station via the multiplex section 7 to control the switch section in the equipment of the opposite station.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a multiplex transmitting/receiving device using a digital transmission method, and in particular selects a voice service channel (No. This invention relates to a service channel transmission method that switches and uses transmission lines.

[Prior Art] Conventionally, this divine service channel transmission method is as shown in FIG.
There were two methods as shown in Figure 3.

In Figure 2, headset plug 1h) audio k
When inserted into the jack 2 prepared for the M person output r'As11, the γf voice code for the service channel is sent to the analog-to-digital converter 4, where the A/D? The signal is converted into a digital signal and sent to the multiplexing section 7. The multiplexing unit 7 operates under the control of the signal processing unit 12 and multiplexes the digitized service channel No. 411 and another digital channel No. 45 manually inputted from the digital output terminal 6, and sends both to the opposing station. Send to. In addition, the digital service channel number manually input from the opposite station is transmitted via the multiplexing unit 7 to the analog/digital converter 4, where it is D/A converted and becomes an audio/11 code.
The call is sent to the headset via plug 1, and the voice service channel 411 is received. A digital channel transmission line belonging to the own station is connected to the digital signal input/output terminal 6, and the digital channel signal manually generated from these is sent to the multiplexing section 7 controlled by the signal processing section 12; t111.

In FIG. 3, a manual switch 9 is added to the configuration shown in FIG. The channel signals are manually switched by a manual switch 9 and sent to the multiplexing section 7 controlled by the egg processing section 2 at different times. Therefore, all of the digital channel transmission lines are always available for use.

[Invention or Problem to be Solved] In the conventional service channel transmission method described above, in the case of FIG.
There is a drawback that when the transmission line of the voice service channel is not used, the transmission capacity for one channel is wasted.

In addition, in the case of FIG. 3, it takes time and effort to operate a manual switch to switch between the transmission of the service channel signal by audio number 43 and the transmission of digital channel number 413.
There is a drawback that switching is forgotten.

[Means for Solving the Problems] The service channel transmission system of the present invention detects whether or not a headset plug is inserted into the human output jack of the service channel sound t"' fA, and Based on the detection result, a selection signal for transmitting an audio signal or a digital channel signal is generated and sent to the selection switch of the own station to control this, and a selection signal of this detection result is also sent to the opposite station to transmit it. control the selection switch.

[Sakukawa] In this way, the voice I for the service channel
It is detected whether or not the headset plug is inserted into the jack of the power section, and this detection result selection number 111,
In addition to being sent to the switch section of the own station to control it, this selection signal is also sent to the signal processing section of the own station, and the G processing section sends this Δ selection signal to the opposing station via the multi-channel 11 section. . If the plug or jack is inserted, the sound/signal will be sent to the service channel number or the opposite station, and if the plug is not inserted into the jack, the digital channel signal will be sent to the opposite station. Furthermore, in the opposite station, the fr,
The I= processing section receives a selection signal indicating whether or not a plug is inserted into the jack of the voice I No. 5 person output section, sends this selection signal to the switch section, and controls it to correspond to this selection signal. to switch.

[Actual JjK Example] Next, an example of the present invention will be described with reference to the drawings.

Figure 1 shows the actual service channel transmission system of the present invention.
FIG. 2 is a block diagram of the 'th example.

In FIG. 1, the detection unit 3 is placed near the jack 2 included in the audio signal output unit 0, and detects whether the headset is inserted into the plug 1 or jack 2 or 6, and detects whether the headset is inserted into the plug 1 or jack 2. The selection result No. 45 is sent to the switch section 5 and the signal processing section 8, and the switch section 5 automatically switches under the control of the detection result selection signal. Then, the signal processing section 8
sends the detection result selection signal sent from the detection unit 3 to the opposite station via the multiplexer 7, and also sends the selection signal from the opposite station to the multiplexer 7.
The selection No. 15 of the detection results of the detecting section of the opposite station is sent to the switch section 5 via the switch section 5. The configuration of this embodiment is the same as the conventional example shown in FIG. 3 except for the above.

The voice signal human output section 10 includes an analog/digital conversion section 4
The analog/digital converter 4 A/D converts the transmitted audio signal and sends it to the switch unit 5, and receives it from the switch unit 5. Digital No. 13 is converted into D/Af and sent to the audio signal input/output section 10 as an audio signal. Switch part 5
The route is analog-to-digital converter 4 → switch unit 5 → multiplexer 7 → local station, and local station → digital signal input/output terminal 6.
→ Switch section 5 → Tagawa section 7 → Opposite station, ft.
Transmission of a service channel signal using the Fl signal and transmission of one digital channel (IA number) are performed.The detection unit 3 detects whether the plug is inserted into the plug 1 or the jack 2, and selects the detection result. The signal is sent to switch sections 5 and 46.
It is sent to the number processing unit 8. Further, the signal processing section 8 receives a selective transmission sent from the opposite station via the multiplexing section 7 and sends it to the switch section 5.

Next, the operation of this embodiment will be explained.

The detection section 3 detects whether the head set's plaque 1 is inserted into the jack 2 or not, and sends a selection signal of the detection result to the switch section 5 and the signal processing section 8.

Based on this selection signal, the switch section 5 is controlled so that if the plug 1 is inserted, the service channel signal in the form of an audio signal is transmitted to the opposing station via the multiplex section 7. If the plug 1 is not inserted, the switch section 5 is controlled so that one digital channel signal at the digital signal input/output terminal 6 is sent to the opposite station via the multiplex section 7. . Furthermore, the selections A and ζ of the detection results sent to the signal processing unit 8 are sent to the opposite station via the multiplexing unit 7, and the signal processing unit of the opposite station Upon receiving this, it understands and performs IQ control on the switch section in the equipment of the 5 opposite stations. This control procedure is the same as the order F in which the detection section 3 of the own station controls the switch section 5 described in -L.

In addition, the signal processing section 8 receives selection No. 15 from the opposite station via the %fft part 7 based on the insertion state of the plug and jack of the audio signal output section of the opposite station, and sends this selection signal to the switch section 5. Send and control this.

This control procedure is the same as the above-described sequence in which the detection section 3 of the own station controls the switch section 5.

[Effects of the Invention] As described in 1-1 below, the present invention adds a detection section and a switch section to the multiplex transmitting/receiving device, and provides a signal processing section with the function of transmitting the selection signal of the detection result of the detection section to the opposite station. By adding a service channel to a service channel, one service channel transmission path can be used for both service channel signal transmission for voice signals and digital channel signal transmission for general communication, and it is possible to automatically switch between the transmissions. This allows effective use of service transmission paths and facilitates channel switching.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the service channel transmission system of the present invention, and FIGS. 2 and 3 are block diagrams of conventional examples of the service channel transmission system, respectively. DESCRIPTION OF SYMBOLS 1...Plug, 2...Jack, 3...Detection section, 4...Analog-digital conversion section, 5...Switch section, 6...Digital signal input/output end, 7... Multi-CR unit, 8.12...Signal processing unit, 9...Manual switch, 10, 1+...Audio signal human output unit. Figure 1? Figure 52

Claims (1)

[Claims] 1. In a service channel transmission method of a multiplex transmitter/receiver that is required to transmit a service channel signal, whether or not a headset plug is inserted into the input/output jack for the audio signal for the service channel. Based on the detection result, a selection signal for transmitting an audio signal or a digital channel signal is generated and sent to the selection switch of the own station to control this, and the selection signal of this detection result is also sent to the opposite station. A service channel transmission method characterized in that the selection switch of the opposite station is controlled by sending the information.