VOIP/PSTN telephone line switcher

Abstract

A VOIP / PSTN telephone line switching device can automatically implement switch on the telephone lines of all rooms of the user between common telephone service and VOIP telephone service in real time. The switching device consists of a DAA module, an SLIC module, a voltage detection circuit, a system logic controller (CPLD), a system logic controller (CPLD), and a power conversion circuit. The user does not need to change the layout of the telephone lines of the user rooms for achieving real-time automatic switch (ordinary telephone high priority) of all rooms between the common telephone and the VOIP telephone, and can correctly detects whether the telephone lines have common telephone service in real time no matter in the process of a call by picking up the telephone or the standby process of the telephone.

Description

Technical field [0001] This smart switch is mainly used in conjunction with the existing ADSL IAD (Asymmetrical Digital Subscriber Loop, Integrated Access Device) gateway product in the family. It does not need to change the layout of the telephone line to realize the telephone service of all rooms in the family in VOIP (Voice Over Internet Protocol) and PSTN (Public Switch Telephone Network) service real-time switching. [0002] The present invention is mainly a method capable of real-time monitoring of whether a user has PSTN ordinary telephone service and a hardware circuit for realizing the purpose. Regardless of whether the PSTN ordinary telephone service is turned on or off at any time, this design method can achieve correct detection, and automatically switch the telephone lines in the home to the corresponding state, so that the telephones in all rooms can be used between PSTN ordinary telephones and VOIP services switch. Background technique [0003] With the rapi...

AI Technical Summary

Problems solved by technology

If the phones in all rooms can be switched between ordinary phones and VOIP services, it is necessary to re-lay the phone line network, which is troublesome and wastes money, and it will affect the appearance because of the many phone lines in the room.

Images