My understanding is that they are separate dispatch centers.One thing I don't fully understand which someone may help with is what's the difference between having Control 1 and SCD N/S? Control 1 sometimes dispatches to have units change over to Command 6 which is south county while SCD N/S never have traffic that gets put onto Control 1. Wouldn't it make sense for Control 1 to dispatch everything and then change to command like Stanislaus or to have Control 1 be only north and everything on the South? I don't understand the flip flopping. I also have never heard anyone being told to use Command 5. It's ways 3/6.
Like @mcjones2013 said, it’s politics. It’s great to consolidate everyone into one dispatch center, but it isn’t always feasible due to silly rivalries, bad blood between departments, or stubborn chiefs resistant to change.This just seems like a silly mess. So one dispatch center dispatches units to use Command 6 which is South. Another dispatches for South using a split N/S channel which is carrying it's own traffic for the same incidents? but having those units also switch to command 6 "if needed". Not that anything is going to change but I think a better solution and saving money would be to simply dispatch on Control 1 and then send them to either Command 3/6. Take out the SCD deal.