Luckily, our call center handles the whole county. If your cell is routed to one county in particular here, they will simply transfer your call to our call center. Good and bad with this. Good is you can actually talk to your own call center. Bad is, you may get lost in the transfer.
Another county actually intakes the call and then calls our dispatch center and relays the information. It's good in the sense that you don't get cut off. But it's bad in the sense that we seem to get a lot of bad or partial information from them.
Officers and dispatchers seem to form a relationship that is unique to their area. Call-takers and dispatchers ask the questions that officers they are dispatching want to know. They know what the officers want to know because the officers ask. Another jurisdiction may not ask, so you lost that melding process.
So when another dispatch center intakes the calls and passes them on, quite often the information is good enough for one of their officers to respond, but quite often we want more or different information.
Pros and cons to each method.
I was up in the hills and came upon an unattended 'controlled' burn that was no longer in control. Being at high elevation, I didn't know which cell tower would pick up my call so I didn't know who my call would be routed to. I simply called the dispatch center directly of the county I was in. That turned out to be a good idea as the area I was in was complex to describe and required a call taker familiar with the area to get fire crews on the way and to the right location.
In time we hate that which we often fear.
Visit nwham.com for accurate Ham Repeater information.