JPH03101496A - Radio line exchange system - Google Patents

Abstract

PURPOSE:To improve a service by accommodating 3 channels of radio lines or more to the same speed group so as to attain intercommunication. CONSTITUTION:When a radio channel number desired to be accommodated is designated by button operation from an operation panel 3, a central controller 2 recognizes a radio channel accommodated in a radio relay trunk 4 and a time division switch 1 is controlled so that a radio trunk 5a corresponding thereto is connected to the radio relay trunk 4. All radio trunks 5b-5n desired to be accommodated in the same speech group are accommodated by the similar operation. Thus, conference talking by lots of radio equipments is attained.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a wireless circuit switching system.

[Conventional technology]

Conventionally, when wireless lines are accommodated in a circuit switching system and wireless devices communicate with each other, one-to-one wireless line relay can be performed for one channel of the communication partner's wireless line for the radio port &11 channel.

[Problem to be solved by the invention]

Therefore, conventional wireless circuit switching systems cannot provide services in which three or more channels of wireless circuits are accommodated in the same call group.

[Means to solve the problem]

The wireless line switching system of the present invention has a time division switch capable of exchanging voice signals and control signals, and an interface function with a wireless device, and uses blurring and large signals from the wireless device together with the voice signal as the control signal. Multiple wireless trunks that are sent to and from the time division switch, and the audio signals sent from the wireless trunks are selected based on the conditions of the control signal that is sent and the others are not selected. A wireless relay trunk that transmits the voice signal selected for all the wireless trunks and the control signal corresponding to the press signal of the radio and is accommodated in the time division switch; a console for performing an operation for connecting to the wireless relay trunk via a time division switch; and controlling the time division switch to connect the wireless trunk to the wireless relay trunk based on instructions from the console; and a control device.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

Referring to FIG. 1, which shows an embodiment of the present invention, in a line switching system forming a fire department command system, etc., when attempting to accommodate a plurality of wireless lines in the same call group, due to the nature of the command system, the operation Since the command starts when the operator of the console 3 sends a message, the user specifies the wireless channel number to be accommodated by operating a button from the console 3. Through this operation, the central controller 2 recognizes the wireless channel accommodated in the wireless relay trunk, and controls the time division switch 1 to connect the corresponding wireless trunk 5a to the wireless relay trunk 4. All the wireless trunks 5b and 5n that are desired to be accommodated in the same call group are accommodated in the same operation. In this state, if it is desired to transmit a voice from a certain wireless device (child) 7a, the wireless II (child) 7a presses the press bar to transmit the voice. Thereby, the radio (parent)
6a detects an incoming call and sends the incoming signal together with a voice signal to the wireless trunk 5a. The wireless trunk 5a uses the incoming signal as a control signal and sends it to the time division switch 1 along with the voice signal.
The data is sent to the wireless relay trunk 4 via. The wireless relay trunk 4 detects that there is an incoming call on the wireless trunk 5a based on this control signal, and sends the control signal together with the voice signal sent from the wireless trunk 5a to the wireless trunks 5b and 5n other than the wireless trunk 5a. do. Furthermore, the wireless trunks 5b and 5n are connected to wireless devices (
Parent) Turn on the press signal and send out the audio signal to 6b and 6n. As a result, the radio (child > 7b,
7n receives the audio signal sent from the radio device (child) 7a. Here, when a voice signal is being transmitted from the radio device (child) 7a, even if the radio device (child) 7b presses the press button and tries to transmit, a press signal is sent from the wireless trunk 5b to the radio device (parent) 6b. By turning on, the wireless receiving circuit (not shown) of the wireless device (parent) 6b is not functioning, so there is no effect on other wireless channels. Therefore, the wireless devices (child) 7a, 7b, Out of 7n, the radio device (child) that pressed the press first will be able to send a call preferentially, and the radio device (child) that pressed the press later will not be able to send a call, so there will be no call conflicts. However, in the wireless relay trunk 4, when control signals from multiple wireless channels are detected simultaneously, the control signal from the channel with the smaller channel number is selected preferentially, and the control signal from the selected channel is combined with the audio signal received from the selected channel. Sends control signals for press control to all other channels.Also,
When the radio device (child) 7a finishes or temporarily stops transmitting and releases the press button, the other radio devices (child > 7b, 7
Transmission of a call from any one of the terminals n becomes possible through the same operation as described above.

[Effects of the Invention] As described above, according to the present invention, three or more channels of wireless lines can be accommodated in the same call group and mutual calls can be made. As a result, a conference call using multiple wireless devices becomes possible.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention. 1... Time division switch, 2... Central control device, 3.
...Operation console, 4...Wireless relay trunk, 5a, 5b. 5n...Radio trunk, 6a, 6b, 6n...Radio device (parent), 7a, 7b, 7n--radio device (child).

Claims (1)

[Scope of Claims] 1. A time division switch capable of exchanging audio signals and control signals, and a time division switch having an interface function with a radio device and using a press signal from the radio device as the control signal together with the audio signal. A plurality of wireless trunks are transmitted and received between the wireless trunks, and the audio signals sent from the wireless trunks are sent together.Only one is selected based on the conditions of the control signal sent, and all the other unselected wireless trunks are selected. a wireless relay trunk that transmits the audio signal selected for the wireless trunk and the control signal corresponding to the press signal of the radio and is accommodated in the time division switch; an operation console that performs an operation to connect the wireless trunk to the wireless relay trunk via the console; and a control device that controls the time division switch to connect the wireless trunk to the wireless relay trunk based on instructions from the operation console. A wireless circuit switching system comprising: 2. When the wireless relay trunk detects a plurality of the control signals from the wireless trunk, preferentially selecting the control signal from a wireless line with a smaller wireless channel number and transmitting it together with the corresponding audio signal. The wireless circuit switching system according to claim 1, characterized in that: