# LTR Standard Decoder # ## Squelch Control ## The LTR decoder provides signalling-based squelch control. If you have a decoding channel selected, then audio will play automatically during a call, and will be squelched at the end of the call, or upon call timeout. ## Aliases ## If you are in the United States, and your LTR network occasionally broadcasts its FCC station callsign, then add the following alias to each alias list you are using for LTR: * `*`-`*``*`-255 FCC CWID