JPS58141072A - Data terminal switching connection system - Google Patents

Abstract

PURPOSE:To perform information transmission and reception to and from an exchange in digital signal format and to improve the speed and reliability of the transmission by providing a multifunctional telephone set which switches and connects data terminals to the main channel network of the exchange, and equipping this telephone set with various data terminals. CONSTITUTION:The multifunctional telephone set 30 normally has a voice side, i.e. handset T/R connected. For data transmission, a start signal is sent from a data terminal 40. In the telephone set 30, once the start signal is detected by a start signal detecting circuit 33, an interruption signal generating circuit 34 is started to cause interruption to a processor 36. By the information in a storage circuit 37, the processor 36 confirms the reception of the start signal and then controls the detecting circuit 33 to connect the terminal 40 to a voice/data switching circuit 31 through the detecting circuit 31. The processor 36, on the other hand, controls the switching circuit 31 to connect a transmission line 50 from the handset side T/R to the data terminal side 40. Thus, the terminal 40 is connected to the main channel network 10.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a system in which each data frame for inputting and outputting data image information, etc. is connected to a telephone exchange via a multi-function X-filler.

In the Specification A of this invention, the term "terminal" refers to a terminal that handles information such as data images, ie, a keyboard display, keyboard printer, display, printer, facsimile, and telex.

Refers to various input/output terminals such as word processors, personal computers, and intelligent terminals.

Conventionally, an acoustic coupling device is used to transmit data image information from the woodcutter's terminal to the other party's terminal through the telephone. When this acoustic coupling device is used, there is a limit to the information transmission speed, making it impossible to use terminals with high transmission speeds. Furthermore, since there is a limit to the amount of information transmitted, an increase in transmission time cannot be avoided. Furthermore, it cannot accommodate sophisticated terminals because it cannot handle complex transfer data formats. moreover,
If the call quality is poor, it is not desirable in terms of transmission quality as measured by the incidence of transfer errors, and there are many other problems, such as the inability to cope with the increasing sophistication and diversification of service functions.

An object of the present invention is to solve these problems.

The data terminal switching connection system according to the present invention includes a means for receiving an activation signal from a data terminal connected to a multifunction telephone accommodated in the main channel network of a telephone exchange and handling call voice signals and digital data. The present invention is characterized by comprising means for executing all interrupt processing in response to an instruction from the receiving means, and means for switching and connecting the data terminal to the main channel network upon detection of the activation signal of the data terminal.

Embodiments of the present invention will be described below with reference to the drawings.

The figure is a conventional diagram showing an embodiment of the data terminal switching connection system according to the present invention. Referring to the figure, the main channel network 10
and the multifunction telephone 30 are connected via the multifunction telephone line circuit 20 to a digital transmission line 50. The audio/data switching circuit 31 constituting the multi-function telephone iaO is normally connected to the audio side encoder/decoder 32 side, and is connected to a handset (T/R) for transmitting and receiving audio signals. Does the operator of the multi-function telephone 30 perform normal call and call processing? If you want to establish a voice connection with the called terminal via the main communication path network 10 of the exchange and perform data transmission with the called terminal, use the telephone key etc. installed on the data terminal 40. When operated, a start signal is sent to the multifunction telephone 30. When the activation signal detection circuit 33 detects the activation signal from the data terminal 40 in the multifunction telephone 30, the interrupt signal generation circuit 34 is activated and the processor 36 is interrupted via the interface circuit 35. The processor 36 analyzes the cause of the interrupt based on the information in the storage circuit 37, and when it is confirmed that the activation signal has been received from the data layer 40, the processor 36 controls the activation signal detection circuit 33 via the interface circuit 35. ,
The data terminal 40 and the audio/data switching circuit 31 are connected via the activation signal detection circuit 33. Also, processor 3
6 controls the audio/data switching circuit 31t via the interface circuit 35 to connect the information transmission path 50 from the T/R side (handsera for transmitting/receiving audio signals) to the data terminal 40 side. Accordingly, the data terminal 40 includes the activation signal detection circuit 33, the voice/data switching circuit 31, the multifunction telephone line circuit 9320. and is connected to the main channel network 10 via a transmission path 50.

As explained above, according to the present invention, when an active input means such as a keyboard is activated from a data terminal, interrupt processing is performed and a call voice signal and digital data are converted via the same digital transmission path. By installing multi-function telephones that can be switched and connected to the main communication channel network, and accommodating data terminals in each terminal, the information transmission channel can be used effectively, and all information transmission and reception with the exchange can be done using digital signals. Since it can be carried out in the same format and the buffering of information can be done easily, it is possible to easily transmit information at high speed and with high reliability.

[Brief explanation of the drawing]

The figure is a pseudo-constructed diagram showing one example of the data terminal switching connection system according to the present invention. 10...Main communication channel network, 20...Multi-function telephone line circuit, 30...Multi-function filling machine, 3
1...Audio/data switching circuit, 32...
・Coder/decoder, 33... Start signal detection circuit, 34... Interrupt signal generation circuit, 35...
...interface circuit, 36...processor, 37...memory circuit, 40...data terminal, 50...digital transmission line.

Claims (1)

[Claims] A means for receiving an activation signal from a data terminal that is controlled by a multi-functional machine accommodated in the main communication path network of the telephone switching machine and handling call voice signals and digital data, and means for executing interrupt processing according to instructions from;
The data terminal disconnection method is provided with a means for switching the data terminal to the main communication hot wire upon detection of the activation number of the data terminal.