CalFire doesn't use data/SCADA for station alerting. Everything is done over the air by voice, but some Schedule A operations have a wireline Rip-and-Run system as a secondary system. Several cities are using a station alerting system by Zetron which is either wireline, OTA, or both.
Command 7/Tac 12/MMU Local is 151.460.
Not all units are using tone protection on their tac channels. Currently, only the Air-to-Ground channels are required to have tone protection, and it will be either Tones 1, 2, or 3; with ground units having TX PL and air units having RX PL. This was done this year to eliminate interference between incidents.