JPS63211934A - Time division multiplexer - Google Patents

Abstract

PURPOSE:To improve line utilizing efficiency by sending a data of a voice system to a multiplexing section in detecting a transmission request of a data of the voice system and sending the data of a data terminal system to the multiplexing section when the request is not detected. CONSTITUTION:In detecting a transmission request signal SS, a transmission request supervisory section 10 switches a line changeover switch 11 to the position of the voice system interface 6. The data of the voice system sent from a PBX 2 is sent to the multiplexing section 5 via the voice system interface 6, the transmission request supervisory section 10 and the line changeover switch 11, multiplexed at the section 5 and sent to the opposite party via a high speed digital line 9. When the data of the voice system is not sent, the line changeover switch 11 is switched to the position of the terminal interface 7, sent via the terminal interface 7 and the line changeover switch 11 to the multiplexer section 5, where the data is multiplexed and send to the opposite side via the high speed digital line 9.

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a time division multiplexing device.

(Prior Art) As a conventional time division multiplexing device, there is one shown in FIG. As shown in the figure, the communication system using this time division multiplexer includes a time division multiplexer 1, a private branch exchange (P
BX) 2, the time division multiplexing device 1 consists of a high-speed digital circuit 19, and further includes a device control section 3, a multiplexing control section 4, and a multiplexing section 5.
, and an audio interface 6. 1! Placement sub-control 3
controls the multiplexing control unit 4, audio interface 6, etc. The multiplexing control unit 4 controls the multiplexing unit 5. The multiplexing unit 5 multiplexes the data sent via the audio interface 6 and converts it into a high-speed digital signal. i19, and the multiplexed data sent from the high-speed digital line 9 is inversely converted and sent to the PBX 2 via the audio interface. The audio interface 6 serves as an interface between the PBX 2 and the time division multiplexer 1. That is, when the transmission request signal SS is sent from the PBX 2, the multiplexing unit 5 transmits the audio data sent from the PBX 2.
The data sent from the multiplexing unit 5 is sent to the PBX.
2, after issuing the reception request signal SR, P
Sends data to BX2.

In this time division multiplexing device, audio data sent from the PBX 2 is sent to the multiplexing unit 5 via the audio interface 6, where it is multiplexed and then sent to the other party via the high-speed digital line 9. Sent out. Further, data sent from the other party via the high-speed digital line 9 is inversely converted into multiplexed data by the multiplexer 5 and sent to the PBX 2 via the audio interface 6.

(Problems to be Solved by the Invention) However, in such a conventional time division multiplexing device, when communication is performed between terminal devices (not shown), the high-speed digital line 9 Since the channel is exclusive between terminals, it is as if a single dedicated line is being connected. In this case, when there is constant data communication, the line efficiency is very good, but when there is no communication, the line is idle and the line usage efficiency is low. Ta. Especially the PB connected to the audio interface.
Since X2 and the like are used for communication between people, there is usually some idle time for communication using the voice interface, and if there is no one using it, such as at night, the line will remain open for a long time. It was vacant and wasted.

The present invention has been made in view of the above problems, and its purpose is to provide a time division multiplexing device with high line utilization efficiency.

[Structure of the invention]

(Means for Solving the Problems) In order to achieve the above object, the present invention includes a transmission request monitoring unit that determines whether a transmission request signal for audio data is being sent, and a transmission request monitoring unit that determines whether a transmission request signal for audio data is sent. The apparatus is characterized in that it includes a switching section that sends audio data to the multiplexing section when a transmission request is detected, and sends data terminal data to the multiplexing section when no transmission request is detected.

(Function) When audio data is to be sent, a transmission request signal is issued, which is detected by the transmission request monitoring section, and the switching section sends the audio data to the multiplexing section where it is multiplexed and sent out. Ru. If audio data is not sent, no transmission request signal is issued, so the transmission request monitoring section cannot detect this, so the switching section sends the data terminal data to the multiplexing section, where it is multiplexed and sent out. .

(Example) An embodiment of the present invention will be described in detail below based on the drawings.

FIG. 1 is a configuration block diagram of a time division multiplexing device according to an embodiment of the present invention. Elements that perform the same functions as those of the conventional example shown in FIG. avoid. This embodiment is characterized in that a line switching section 8 is provided in the time division multiplexing device @1, and a voice system interface 6 and a data terminal interface 7 are connected to this line switching section 8. A data terminal device (not shown) is connected to the data terminal interface 7.

FIG. 2 shows the configuration of the line switching section 8, which consists of a transmission request monitoring section 10 and a line changeover switch 11. The transmission request monitoring unit 10 monitors the transmission request signal SS sent via the audio interface 6, and when the transmission request signal SS is detected, switches the line changeover switch 11 to the audio interface 6 side. If no transmission request signal is detected, the line changeover switch 11 is switched to the data terminal interface 7 side.

Next, the operation of this embodiment will be explained. When audio data is multiplexed, a transmission request signal SS is issued from the PBX 2 and sent to the transmission request monitoring section 10 via the audio interface 6. When the transmission request monitoring section 10 detects the transmission request signal SS, it switches the line changeover switch 11 to the audio interface 6 side. However, the audio data sent from the PBX 2 is transferred to the audio interface 6,
The signals are sent to the multiplexing unit 5 via the transmission request monitoring unit 10 and the line switching unit switch 11, where they are multiplexed and sent to the other party via the high-speed digital line 9.

If audio data is not being sent, the transmission request signal SS is not being issued and the transmission request monitoring section 10 cannot detect the transmission request signal SS, so the line switching switch 11 is switched to the terminal interface 7 side. . However, in this state, data sent from a data terminal device (not shown) is sent to the multiplexer 5 via the terminal interface 7 and the line changeover switch 11, where it is multiplexed and sent to the other party via the high-speed digital line 9. It will be done.

In this way, in this embodiment, when voice communication is not performed, data sent from the data terminal vt@ is sent to the multiplexing unit 5.
Since the data is multiplexed and communicated by the , it is possible to increase the efficiency of line usage.

〔Effect of the invention〕

As described in detail above, according to the present invention, it is possible to provide a time division multiplexing device with high line utilization efficiency.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a time division multiplexing device according to an embodiment of the present invention, FIG. 2 is a block diagram of a line switching unit 8, and FIG. 3 is a block diagram of a conventional time division multiplexing device. It is. 1... Time division multiplexing device, 2... PBX, 5...
Multiplexing unit, 6... Audio system interface, 7...
Data terminal system interface, 8...Line switching unit, 9...High speed digital line, 10...Transmission request monitoring unit, 11...Line changeover switch Figure 1 2F2'I Figure 3

Claims (1)

[Claims] In a time division multiplexing device that multiplexes audio data or data terminal data in a multiplexing unit and sends the multiplexed data to the other party via a line, a signal requesting transmission of audio data is sent. a transmission request monitoring unit that determines whether or not a transmission request is being sent; and when the transmission request monitoring unit detects a transmission request, it sends audio data to a multiplexing unit, and if it does not detect a transmission request, it multiplexes data terminal data. What is claimed is: 1. A time division multiplexing device comprising: a switching section for sending data to a switching section;