The Jinlangxin SD-WAN remote monitoring networking gateway is plug-and-play. It supports broadband from mobile, telecom, Unicom, and broadcasting. No public network or dedicated line is required; as long as there is internet access, it can connect to multi-level routing and bypass modes, supporting 4G mode. 1. Used for remote monitoring and off-site storage. 2. Remote … Read more
Everyone knows Most overseas scam calls start with 00 or + So is it safe if the phone shows an incoming call from within the country? Sometimes people receive scam calls where the caller ID showslocal numbers or normal landline numbers Why are these calls not from “00” or “+” foreign numbers? Because many of … Read more
To reduce the psychological defenses of victims, overseas fraudsters will use high salaries to entice domestic personnel to use GOIP and VOIP devices to build a communication bridge for them, thus successfully carrying out fraud.Please be vigilant and be cautious when looking for part-time jobs, and do not become accomplices in telecom fraud. Understanding GOIP … Read more
Raspberry Pi: GOIP Previously used a USB SIM800-like communication module, operated the serial port with Python after connecting to the computer. Subsequently used Raspberry Pi/ESP32 as the main controller. The open-source asterisk can not only serve as a VoIP server but also bridge PSTN for making and receiving calls and SMS messages. The customized system … Read more
Are you looking for a phone system for a small business or home office? I have always been interested in scalable VoIP (Voice over IP) solutions, and later I found an implementation of Asterisk on the Raspberry Pi. — Don Watkins Table of Contents –Getting Started10% –Testing35% –Completing a Call77% Are you looking for a … Read more
1. Linux Audio Architecture Diagram The quality of audio and video directly affects product experience. 2. Explanation of Audio Architecture Layers openWRT adopts the ALSA layer architecture as follows: Application: The upper layer application mainly calls the interfaces in alsa-lib to implement business logic. Use aplay, arecord, amixer, speaker-test in alsa-util for related testing. HAL … Read more
QRadioLink SDR Client Application for Linux QRadioLink is a GNU/Linux multi-mode (analog and digital) SDR (Software Defined Radio) transceiver application that utilizes the network to achieve radio to VOIP bridging (radio over IP). It is built on GNU Radio and allows experimentation with different digital and analog radio signals using a Qt5 user interface. Possible … Read more