JPS63187849A - Radio telephone system - Google Patents

Abstract

PURPOSE:To eliminate the need for the investigation of the classification of a trunk line at every change of a trunk line by providing a trunk line classification managing equipment transmitting a discriminating signal representing whether a trunk line is a line for a dial pulse or a pushbutton signal to a radio equipment in the presence of a call signal of the radio telephone set between the trunk line and the radio equipment. CONSTITUTION:When a call signal is sent to a connector 2 from a radio telephone set, a call response signal is returned from the connector 2 to the radio telephone set 3 and a dial signal is given to the connector 2 from the radio telephone set 3, the information representing the presence of the call signal is detected by the trunk line classification managing device 4, the discriminating signal representing whether the trunk line represents the DP(dial pulse) signal or the PB(pushbutton) signal to the connector 2 to switch the dial conversion switch of the connector 2 automatically. Thus, after the dial signal from the radio telephone set 3 in succession to the call signal is converted into the dial signal suited to the trunk line 1 by the connector 2 and sent to the exchange of the subscriber line.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention applies to both dial pulse (hereinafter abbreviated as DP) subscriber lines and push button (hereinafter abbreviated as PB) subscriber lines. This invention relates to a wireless telephone system that automatically sends out a dial signal corresponding to a subscriber's line so that even a subscriber can connect.

(Prior Art) FIG. 3 shows a cordless telephone device. (1) is a central office line, (2) is a connection device having a function of switching the dial signal depending on whether it is DP or PB, and (3) is a wireless telephone. Conventionally, whether the station or ml is for dial pulse (DP) or push button (PB) has been manually set using the dial changeover switch of the connection device 2.

(Problem to be solved by the invention) For this reason, when connecting the connection bag @2 to the central office line 1, it is necessary to always check whether the central office line 1 is DP or PB, which is extremely difficult. It was a hassle.

The invention aims to eliminate this drawback.

(Detailed Means for Solving the Problems) A feature of the present invention for achieving the above object is that the wireless communication device has a switch that accommodates a central office line and switches the dialing signal depending on whether the central office line is for dial pulses or for push buttons. In a wireless telephone system consisting of a radio telephone and a radio telephone that communicates with the radio, an identification signal is transmitted between the central office line and the radio to determine whether the central office line is a dial pulse or a push button. A station line type management device is provided which transmits a call signal from a telephone to a wireless device.

(Embodiment) FIG. 1 shows an embodiment of the present invention, in which 1 is a central office line, 2 is a DP
3 is a wireless telephone, and 4 is a station line type management device.

When a calling signal is sent from the wireless telephone to the connecting device 2,
The connection device 2 returns calling and call response signals to the non-NIA telephone 3, and then the radio telephone 3 sends a dial signal to the connection device 2, but the information that there was a call signal is sent to the central office line type. The management device 4 also detects that the central office line is D.
An identification signal indicating whether it is P or PB is sent to the connection device 2, and the dial conversion switch of the connection device 2 is automatically switched. For this reason, the dial signal from the radio telephone 3 following the calling signal is matched to the dial signal compatible with the central office line 1, and the connecting device 2
After being converted, the data is sent to the subscriber line exchange.

FIG. 2 is a configuration diagram of the office line type management device 4. As shown in FIG.

The calling signal from the wireless telephone 3 is detected by the connecting device 2 and closes the loop of the single office line 5, so that it is detected by the loop DET and the calling signal is detected.

Next, the dial oscillator (DTMF-O5C) sends a signal indicating whether it is DP or PB to the connection device 2, and the dial signal conversion switch of the connection device 2 is set. In the embodiment, a case is shown in which a call response signal is transmitted from the connecting device 2 to the radio telephone 3, but the call response signal is transmitted from the station line type management device 4 together with a station line display signal through the connecting device 2 to the radio telephone 3. You can also send it to

(Effects of the Invention) As explained above, since the settings of the dial signal conversion switch are automatically made, there is no need to check the type of office line every time the office line is changed, and connection failures are eliminated.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an embodiment of the present invention, FIG. 2 is a block diagram of a station line type management device, and FIG. 3 is a diagram of a conventional technique. 1; Office line; 2; Connection device; 3; Wireless telephone; 4; Office line type management device.

Claims (1)

[Scope of Claims] A radio device that accommodates a central office line and has a switch that switches dialing signals depending on whether the central office line is for dial pulses or push buttons, and a wireless telephone that communicates with the wireless device. In the wireless telephone system, there is a central office line between the central office line and the radio that transmits an identification signal indicating whether it is a dial pulse or a push button to the radio when there is a calling signal from the wireless telephone. A wireless telephone system characterized by being equipped with a type management device.