Two-line implementation device for bidirectional synchronous communication and method for adopting same to realize bidirectional synchronous communication

Abstract

The invention provides a two-line implementation device for bidirectional synchronous communication and a method for adopting same to realize bidirectional synchronous communication. The two-line implementation device includes a handset master control MCU and a telephone master control MCU, two lines and two communication transmission lines are used, connecting lines between a handset and a telephone can use common four-core handset cord, cooperative control of the handset and the telephone is adopted, telephone function realization is simple and reliable, and expandability is high. Accordingto a new scheme, a handset circuit and a telephone circuit each adopt an MCU as master control, and the two MCUs are connected through handset lines for communication; and to realize bidirectional communication, an IIC polling mode is utilized to increase on-hook leakage current or a line needs to be added, thus the handset cords are increased to at least five lines (conventionally four core wires), the cost of the handset lines is increased, special materials are formed, trouble is brought to both production and management, and to solve the problem, the two-line bidirectional synchronous communication mode is designed.

Description

technical field [0001] The present invention relates to a two-way synchronous communication device and method between a telephone set and its handle, more precisely, a two-wire two-wire realization device for two-way synchronous communication and a method for realizing two-way synchronous communication using the device. Background technique [0002] At present, most of the handles of double-dial telephones are designed with special dialing circuits. The dialing circuit of the handle is used for dialing. The handle wire has a large number of handle wire cores, which is inconvenient to use and the function expansion is not strong. The circuit handle and the landline used in the existing solution need 6 connections. In addition to the same 2 lines, it is also necessary to connect the squelch line, the busy tone detection line, the on-hook control line, the handle dial chip control line, and the control circuit is complicated. . Contents of the invention [0003] The purpose...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the handles of double-dial telephones are designed with special dialing circuits. The dialing circuit of the handle is used for dialing. Handle wire, the number of handle wire cores is too many, it is inconvenient to use, and the function expansion is not strong

The circuit handle and the landline used in the existing solution need 6 connections. In addition to the same 2 lines, it is also necessary to connect the squelch line, the busy tone detection line, the on-hook control line, the handle dial chip control line, and the control circuit is complicated.

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