JPH02159194A - Key telephone system - Google Patents

Abstract

PURPOSE:To unnecessitate the manual switching operation between the registration of operational maintenance data from terminal data equipment and the registration of operational maintenance data from a trunk line by automatically switching the terminal data equipment and a MODEM according to the presence/ absence of a terminal ready signal from the terminal data equipment. CONSTITUTION:When the operational maintenance data are inputted from a TTY (terminal data equipment) 8, by making the section between TTY 8 and a main device 100 on-line, an ER (terminal ready) signal is applied from the TTY 8 to an UART (serial/parallel converter) 3. A muP 200 periodically inquires the presence/absence of the reception of the ER signal to the UART 3, and in response to it, the UART 3 transmits the information of the reception of the ER signal through a muP bus 14 to the muP 200. The muP 200 outputs a voltage signal at a logical value '1' from a control terminal S1 to a control terminal S of a selector 9, the selector 9 selects the input data to an input data terminal A, and it is set in a condition to be outputted from an output data terminal C to the UART 3. Thus, the UART 3 is connected to the TTY 8, and it is separated from the MODEM 4.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention relates to a button telephone device, and in particular, it is possible to register operation and maintenance data to a main device at the time of installation etc. from a terminal data device. The present invention relates to a button telephone device that can also be used from a central office line.

(Prior Art) When installing or expanding a key telephone device, it is necessary to register operation and maintenance data such as extension numbers, function key function data, and restrictions on telephone calls to central office lines in the main device. Conventionally, the usual method is to register operation and maintenance data from the dial keypad of a key telephone, which is an extension terminal.

In recent years, new methods have been developed, such as: ■ Connecting a terminal data device such as a personal computer to the main device and registering it in a conversational manner from this data device, and ■ Using a telephone line to save the trouble of service personnel visiting the installation site. There is also a method of registering remotely from a terminal data device connected to the outside.

FIG. 3 shows a conventional key telephone device in which it is possible to select the two methods of registering operation and maintenance data, ``1'' and ``2'' mentioned above.

One or more key telephones 20, which are extension terminals, are connected to the main device 1.

The main device 1 includes a central office line interface (INT) 6 that relays communication with the central office line 10 and a button telephone interface 11 that relays communication with the button telephone 20,
These interfaces 6゜11 are each codec 5
b, 12 to the speech highway 13. Speech Highway 13 is a time-sharing communication path;
It is connected to a time switch 7 that performs exchange between the respective time-division communication paths. Further, a modem device (hereinafter referred to as a modem) 4 is connected to the speech highway 13 via a codec 5a. The modem 4 modulates and demodulates operation and maintenance data input from the office line 10 into digital data.

Terminal data equipment (TTY) such as personal computers
) 8 can be externally connected to the main device 1 for registering operation and maintenance data. Since both the TTY 8 and the modem 4 have general-purpose serial interfaces, a serial/parallel converter (UART) 3 is provided between them and the microprocessor (μP) 2 to relay communications between them.

UART3 is connected to μP2 via microprocessor μP bus 14. When TTY8 is connected to main device 1, the output data (SD) of TTY8 is
Either the terminal or the output data terminal of the modem 4 is selected by a manual changeover switch 15 and connected to the input data terminal of the UART 3. At the same time, T
The manual data (RD) terminal of TY8 is connected to the output data terminal of UART3. The input data terminal of a modem 4 is also connected to the output data terminal of this UART 3. Furthermore, the terminal ready (ER) terminal and data set ready (DR) terminal of TTY8 are connected to the corresponding terminals of UART3. When TTY8 is powered on and set to data external output mode, that is, when TTY8 and UART3 are online, a terminal ready (ER) signal is given from TTY8 to UART3.
Data set ready (DR) is available from UART3 to TTY8.
), the signal is given and both parties recognize that they can communicate with each other.

μP2 controls the entire button telephone device, and μP
The above-mentioned UART 3 and modem 4 are connected via the bus 14.
, INT6 for office lines, INTII for key telephones, time switch 7, etc., and exchanges control data with them.

In the conventional device having such a configuration, when registering operation and maintenance data from an external telephone via the central office line 10, the manual changeover switch 15 is placed on the modem 4 side in advance. When secondary data from an external telephone is input via the central office line 10 after receiving a call, the μP 2 decodes the data, controls the time switch 7, and connects the communication path between the codec 5b and the codec 8. Subsequently, operation and maintenance data from the external telephone is input via the central office line 10, which is converted into digital data by the modem 4 and transferred to the changeover switch 15 and the UAR.
It is input to μP2 via T3 and registered.

On the other hand, when registering from TTY8, connect TTY8 to main device 1, turn on the power of TTY8, and set it to data external output mode. Furthermore, the selector switch 15 is turned on to the TTYS side. After that, by inputting operation and maintenance data from TTY8, this can be changed to changeover switch 15.
, is input to μP2 via UART3 and registered.

(Problems to be Solved by the Invention) As described above, in the conventional key telephone device, it is necessary to manually switch the changeover switch 15 before registration depending on the method of registering operation and maintenance data.

Furthermore, if the changeover switch 15 is left in the TTYg side, it becomes impossible to register operation and maintenance data by remote control from the office line 10.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a key telephone device that can automatically switch between registration of operation and maintenance data from a terminal data device and registration of operation and maintenance data from a central office line.

[Structure of the invention]

(Means for Solving the Problems) The present invention provides operation and maintenance data that is input from a terminal data device externally connected to the main device or input from an outside line connected to the main device via a modem device in the main device. In the button telephone device, the terminal data device is connected to the main device and the main device is connected to the main device. The main device includes a detection means for detecting the presence or absence of a terminal ready signal given to the main device from the terminal data device indicating an online state, and the selection means responds to the detection signal from the detection means. The method is characterized in that the input signal from either the terminal data device or the modem is automatically selected.

(Function) In the above configuration, when a terminal ready signal indicating that the terminal data device is connected to the main device and is in an online state with the main device is detected, the selection means automatically selects the input signal from the terminal data device. On the other hand, when no terminal ready signal is detected, the signal input from the modem (that is, the central office line) is automatically selected.

(Examples) The present invention will be specifically described below with reference to illustrative examples. In addition, in the illustrated example, the same reference numerals are given to the same elements as in the prior art, and redundant explanation will be omitted.

FIG. 1 is a block diagram showing the configuration of an embodiment of a key telephone device according to the present invention. This key telephone device is composed of a main device 100 connected to a central office line 10 and one or more key telephones 20 connected to the main device 100. The main device 100 includes an INT6 for central office lines and an INTI for key telephones.
1, codecs 12, 5a, 5b, speech highway 13, modem 4, UART 3, μP bus 14, and time switch 7. These are the same as those of the conventional main device 1 shown in FIG. The main device 100 can be externally connected to a TTY 8 such as a personal computer. Furthermore, the main device 100 has a selector 9 as means for selecting a human input signal from the modem 4 or an input signal from the TTY 8.

The selector 9 has two input data terminals A and B, one output data terminal C, and one control terminal S, and one of the input data to the two input data terminals A and B is input to the control terminal S. It is configured to be selected according to a signal and appear at the output data terminal C. One human power data terminal A is the output data terminal S when TTY8 is connected.
Connected to D. The other manual data terminal B is connected to the output data terminal of the modem 4. On the other hand, the control terminal S is connected to the control terminal S1 of μP2O0.

The connections between the manual data terminal RD, terminal ready terminal ER, and data set ready terminal DR of the TTY 8, as well as the manual data terminal of the modem 4 and the UART 3, are the same as in the conventional device shown in FIG. Therefore, when the TTY8 is connected to the main device 100, powered on, set to data external output mode, and brought online with the main device 100, the TTY8
A terminal ready (ER) signal is given from Y8 to UART3, and a data set ready (DR) signal is given from UART3 to TTY8, and both recognize that they can communicate with each other. Note that, for example, a voltage signal with a logical value of "1" is used as the ER multiplied signal and the DR multiplied signal.

In addition to the various control functions provided by the conventional μP2 shown in Figure 3, μP2O0 periodically asks UART3 whether or not it is receiving the ER double signal from TTY8, and when it receives information that it is receiving is from control terminal S1 to selector 9
It has a function of outputting a voltage signal with a logical value of "1°" to the control terminal 9 of the controller.

FIG. 2 shows an example of the internal circuit of the selector 9. The input data terminal A and the control terminal S are connected to each input terminal of the two-man power AND gate 91. On the other hand, the output terminal of the inverter 92 whose input is connected to the control terminal S and the input data terminal B are connected to respective input terminals of another two-man power AND gate 93. Each output of those AND gates 91 and 93 is 2
It is connected to each input terminal of a human-powered OR gate 94, and the output terminal of this OR gate 94 is connected to an output data terminal C. Therefore, when a signal with a logic value "1" is applied to the control terminal S, an input signal to the input data terminal A appears at the output data terminal C, and a logic value "0" is applied to the -power control terminal S.
, the input signal to the input data terminal B appears at the output data terminal C.

Next, the operation will be explained.

When inputting operation and maintenance data from TTY8, TT
Connect Y8 to the main device 100, turn on the power to TTY8, and set it to data external output mode. In other words, T.T.
The connection between Y8 and the main device 100 is brought online. As a result, an ER multiplied signal is provided from TTY8 to UART3. μP2O0 periodically asks UART3 whether or not it has received this ER double signal, and in response, UART3 sends information to the effect that it has received the ER double signal via μP bus 14.
Send to P2O0. μP2O0 receives this information,
Logic value “1” is applied from the control terminal S1 to the control terminal S of the selector 9.
” is output. As a result, the selector 9 is set to a state where the human input data to the input data terminal A is selected and output from the output data terminal C to the UART 3. In this way, the UART 3 is connected to the TTY 8, and the modem Next, when operation and maintenance data is output from TTY8, it is input to μP2O0 via UART3 and μP bus 14 and registered.

On the other hand, if the TTY8 is placed in a mode other than the data external output mode, the power is turned off, or the main unit 100
ER from TTY8 to UART3
Double signal input is cut off. Therefore, UART3 is μP2O
In response to the inquiry from 0, information indicating that there is no ER multiplication signal is transmitted to μP2O0 via the μP bus 14. In response to this, μP2O0 outputs a signal with a logic value of "0" from the control terminal S1 to the control terminal S of the selector 9. As a result, the selector 9 is switched to a state in which the input data to the manual data terminal B is selected and is output from the output data terminal C to the UART 3. Thus, UART3 is connected to modem 4,
It is separated from TTY8. Next, when predetermined secondary data arrives after receiving a call from the office line 10, it is input from the office line INT6 to the μP bus 14 to the μP2O0. In response to this, μP2O0 switches to time switch 7.
is controlled to connect the communication path between the codec 5a and the block 5b. Subsequently, when operation and maintenance data arrives from an externally connected data device via the central office line 10, this data is input from the central office line JfllNT6 to the codec 5b, converted to digital data, and then sent to the speech highway 1.
3. The signal is sent to the codec 5a through the time switch 7 and the speech highway 13, where it is again converted into an analog signal and then input to the modem 4.

The operation and maintenance data input to the modem 4 is demodulated here and sent to the μP through the selector 9, UART 3, and μP bus 14.
It will be manually registered on 2O0.

〔Effect of the invention〕

As explained above, the present invention automatically switches between the terminal data device and the modem depending on the presence or absence of a terminal ready signal from the terminal data device, so that operation and maintenance data from the terminal data device can be registered. This eliminates the need for manual switching between registration of operation and maintenance data from the central office line, and registration can be freely performed using either method.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of the button telephone device according to the present invention, FIG. 2 is a circuit diagram showing an example of the internal circuit of the selector in the embodiment of FIG. 1, and FIG. FIG. 2 is a block diagram showing the configuration of a button telephone device. 100... Main device, 200... Microprocessor (μP), 3... Serial/parallel converter (UA
RT), 4... Modulation/demodulation device (modem), 8... Terminal data equipment (TTY), 9... j! to selector. Options) 10...Station line, 91°93...AND gate, 92...Inverter, 94...OR gate.

Claims (1)

[Scope of Claims] Either operation and maintenance data input from a terminal data device externally connected to the main device, or operation and maintenance data input from an external line connected to the main device via a modulation/demodulation device in the main device. In a button telephone device in which one of the terminal data devices can be registered in a control circuit in the main device via a selection means in the main device, the terminal data device indicates that the terminal data device is connected to the main device and is in an online state with the main device. The main device includes detection means for detecting the presence or absence of a terminal ready signal given to the main device from the terminal data device, and the selection device selects the terminal data device or modem according to the detection signal from the detection device. A button telephone device characterized in that an input signal from either one of the devices is automatically selected.