Interruptible Fold Back, AKA IFB March 16, 2021 Interruptible Fold Back, or IFB, is a type of simplex intercom for sending a program feed and interrupt (cue) audio on IFB lines for a talent to monitor. The IFB line is comprised of three elements: Program Audio, Interrupt (Cue)... Read more Tags : Broadcast Production, Basics, House of Worship, IFB, Live Performance, Sports Operation Category: Tech Blog