TW201431345A - Smart WiFi cordless phone - Google Patents

Abstract

Smart WiFi Cordless Phone allows users to use smart phones, including iPhone and Android phones, to make and receive phone calls to and from PSTN (Public Switched Telephone Network). It first converts analog call control and voice signals from PSTN into digital signals, which are further encoded, compressed, and packetized to transmit into WiFi network and received by smart phones. Voice signals are handled by Digital Signal Processor (DSP), including echo cancellation, noise reduction, jitter buffering, packet concealment, etc., to guarantee the carrier-grade voice quality during the conversation. This invention includes an RJ11 connector for interface to PSTN network, an Fx0 module for voice processing, a WiFi module to transmit/receive signals to/from smart phones via WiFi network, an optional RJ45 interface for internet connection, a ''Pair button'', for registration and extension number distribution, and a complete phone set module to allow user direct dialing and answering PSTN phone calls.

Description

Smart WiFi wireless phone

The invention relates to a radio telephone, digitizing the sound and control signals of the telephone network PSTN, and then using the WiFi wireless network as a transmission medium, using the smart phone as a terminal communication device, and making a call and answering with the smart phone. Traditional phone features.

Most of today's radiotelephones use Digital Enhanced Cordless Telecommunications (DECT) for transmission. However, DECT has a limited distance. It is often not far away when the signal is too far away. Devices that extend the range of signals, such as Amplifier/Repeater/ Bridge and other devices are not popular, and all the sub-machines in the DECT wireless telephone system must use the same label to communicate with each other. The operation modes of each brand are also inconsistent, and the operation is complicated and difficult.

With the rapid development of 3G/4G networks, smart phones are almost one-handed, and the WiFi network in the home is quite popular. With the development of WiFi Repeater/Bridge technology, its coverage is easy to expand to the whole building. Building, the present invention is to make full use of the existing architecture, devices, use smart phones, to receive and dial PSTN phones through the WiFi network, using the international communication protocol (TCP/IP) and open architecture, whether it is iPhone Android Phone can be used to break through the limitations of existing wireless DECT technology.

The main function of the smart WiFi radiotelephone is to analogize the digital signals from the control signals (Call signals) and audio signals from the PSTN of the telecommunications switch, and then packetize them into network packets (TCP/IP). After the WiFi module, the signal is transmitted to the WiFi network and delivered to the smart phone. The main structure of the present invention is shown in Figure 2, including: - A telephone line jack (RJ11) connected to the PSTN of the telecommunications switch office; - an FxO module for PSTN telephone signal analog-to-digital conversion; - a WiFi module to provide network signal transmission with the smart phone; - One network route jack (RJ45) for easy connection to the external network; - One registration button (Pair), which provides smart phone registration and automatic assignment of extension numbers; - A complete phone module for users to answer and dial out PSTN phone.

The function provided by the present invention is shown in Figure 3, and the key points are as follows:

- Transfer the PSTN Caller ID to the phone for easy display and storage;

- Analog-digital conversion of sound signals, network packet cutting, and Echo Cancellation, Noise Cancellation, Concealment, etc. to ensure carrier-Grade level Sound quality

- The smart phone can use the Pair button to simply complete the registration with the present invention to obtain the extension number, and each station can use the extension number for intercom (Intercom);

- Integrate traditional telephones, provide functions such as Keypad and LCM module, so that users can directly dial and receive PSTN calls using this unit.

- WiFi module with Repeater/Bridge/Router/AP function, greatly expanding the WiFi coverage of the facility

The operation procedure of the smart WiFi wireless phone can be divided into four parts, as follows:

First, the registration, the program shown in Figure 4, as shown:

Download app for A, iPhone or Android phone

B. According to the "Pair" button of the present invention, the mobile phone performs the Pair function of the APP, that is, the registration function is completed, and the extension number is obtained.

Second, the PSTN call, the signal flow is shown in Figure 5:

A. The FxO module of the present invention receives a ringing signal from the PSTN.

B. The WiFi module of the present invention sends an incoming call signal to all mobile phones that have completed registration, and Caller ID (Caller ID)

C, the phone screen shows the caller number and generates a ringing

Ding, mobile phone users press "answer", the signal is transmitted to the WiFi module of the present invention

E. The FxO module of the present invention issues an off-hook signal to the PSTN network, and connects the phone.

During the two-way conversation, the sound signal is processed by the digital signal processing (DSP) of the WiFi and FxO modules of the present invention to ensure the carrier-Grade level sound quality.

Third, the mobile phone dials out the PSTN phone, the signal flow is shown in Figure 6.

A. The WiFi module of the present invention receives an outgoing call signal and a PSTN telephone number from a mobile phone that has completed registration.

B. After the FxO module of the present invention issues an off-hook signal to the PSTN network, the telephone number is dialed out.

C, after the other party's phone accepts, you can make a two-way call

In the process of double-talking, the sound signal is processed by the digital signal processing (DSP) of the WiFi and FxO modules of the present invention to ensure the sound quality of the carrier-Grade level.

Fourth, the internal line of the mobile phone dials, the signal flow is shown in Figure VII:

A. The WiFi module of the present invention receives an internal dialing signal (Inercom) and an internal number from a mobile phone that has completed registration.

B. The WiFi module transfers the internal dialing signal to the target mobile phone specified by the internal number.

C, the target mobile phone screen displays the caller number and generates a ringing tone

Ding, the target mobile phone user can "talk to" to talk directly with the incoming call mobile phone.

1‧‧‧ loudspeaker

2‧‧‧Hook key

3‧‧‧LCM display module

4‧‧‧Digital dial

5‧‧‧Wireless WiFi Module

6‧‧‧Upper casing

7‧‧‧Phone Module

8‧‧‧External analogy to digital FxO Module

9‧‧‧Pair button

10‧‧‧ Lower case

11‧‧‧Power port

12‧‧ Wi-Fi Antenna

13‧‧‧RJ-45 port

14‧‧‧RJ-11 port

Figure 2 (internal architecture diagram) of the present invention, shown, includes: - RJ11‧‧‧ a telephone line jack connected to the PSTN of the telecommunications exchange office - FxO‧‧‧ a module for PSTN telephone signal analog-digital Conversion - WiFi Module‧‧‧ One, providing network signal transmission with smart phones - RJ45‧‧‧One network route connection for easy connection to external network - Pair‧‧‧One registration button for smart phones Register and automatically assign an extension number - Telephone Module ‧‧‧ A complete telephone module for users to answer and dial out PSTN calls

Claims (2)

The smart WiFi wireless phone includes: a telephone line jack (RJ11) connected to the PSTN of the telecommunications switch office; an FxO module for analog-to-digital conversion of the PSTN telephone signal; and a WiFi module providing a network between the smart phone and the smart phone Road signal transmission; a network route access hole (RJ45) is convenient to connect to the external network; a registration key (Pair), which provides smart phone registration and assigns an extension number; a complete phone module for users to answer and dial out PSTN phone. The function of the smart WiFi radiotelephone: The main function of the present invention is to analogize the digital signals from the control signals (Call signals) and the sound signals from the PSTN of the telecommunications switch, and then decompose the packets into network packets. (TCP/IP), after the WiFi module, the signal is transmitted to the WiFi network and sent to the smart phone; when receiving the PSTN call, the FxO module of the present invention converts the ring signal into a network. The road packet is transmitted through the WiFi module to notify all the registered mobile phones, and the PSTN caller ID (Caller ID) is transmitted to the mobile phone to facilitate display and storage; after receiving the response signal from the mobile phone, The FxO module of the present invention sends an off-hook signal to turn on the PSTN phone, and starts the cell phone to talk with the PSTN talker; during the call, the present invention performs analog-digital conversion and network packet cutting of the sound signal. And Echo Cancellation, Noise Cancellation, Concealment, etc. to ensure the carrier-Grade level sound quality; smart phones use Pair press In this way, the extension number can be simply completed and registered with the present invention, and the extension number can be used for intercom dialing (Intercom); the present invention can provide the function of three-party conference (conference call) between multiple mobile phones and the PSTN. The WiFi module included in the invention has the function of Repeater/Bridge, can be connected with the existing WiFi AP, greatly expands the coverage area of the WiFi network, facilitates the use of the smart phone anywhere, and integrates the traditional telephone function. Provides a mechanism such as a keypad (Keypad) and a display screen (LCM module) to facilitate users to directly dial and receive PSTN calls using the unit.