Phone Home Revisited: Getting Remote Dialtone With Asterisk — Three Great Solutions
Today we explore three different ways to get remote dialtone using Asterisk and a touchtone phone anywhere in the world. Sample code for each of the three DISA solutions is provided including an AutoAttendant example, a web interface, and a DISA approach that doesn’t even incur an expense when phoning home to activate a DISA callback.