作者: Stefan Wintermeyer

Learn to build Rails-based web applications using all the latest features offered in Rails 5.2. Author Stefan Wintermeyer begins by teaching the basics of Ruby 2.5 before proceeding through all aspe …

Using the open source Asterisk platform, you can deploy a state-of-the-art Vo IP PBX on a low-cost PC or server for a fraction of the cost of conventional PBX systems. The only drawback to Asterisk i …