If you listen to that TG and I believe it to be MED 9, it may be 10, at the same time you will hear the tones go off there too. Whatever Med channel that is is what the TG should be named as it is the digital resource on the physical symphonies to talk across that med channel to include paging Pegasus for a flight. The only difference is with a digital system this is happening within the P25 system unlike their old motorola consoles that could go direct to a conventional base station without an interface like the Pathway+ or a consolodated gateway (server that Pathway+ talks to)