I was going to say this. It's not an emergency and those dispatchers need to be available for real emergencies.
I know we all like our dogs to be a bit protective, and no one is going to fault you for having a GSD that barks at approaching people, but at some point you should think more about training the dog to be quiet rather than thinking about what to do in case your dog is barking at a police officer.
Actually not a bad idea. Teach the dog ENOUGH!
Once upon a time, a couple of yayhoos, dropped a car in my neighbor's ditch. They took off the license plates, and walked on up the road. A car saw them and took them to the hospital. I found that all out the next day from my neighbor, who talked to the Amish neighbor who saw them picked up.
Anyhow, the State Boys, come along and saw the car in the ditch and stopped. My neighbors were not home. They went all around their house checking windows and doors. They came to my house. I answered the door and a chorus of barks greeted him from the majority of my dogs who were inside at the time.
He peered in, I did not invite him in. I let the dogs bark. I told him that no one would have gone through my back yard as the dogs weren't barking. He asked me if the neighbors were home, and I told them I didn't know. He seemed to hesitate. I don't know whether he thought I was hiding them in my house or not. But finally the dogs got on my nerves and I said, "ENOUGH!" My Lord, you could have heard a pin drop. The guy looked at me with like I was some sort of evil dog whisperer (can you say, R E S P E C T?). I did not let him know that I was shocked that it actually worked and was still working. He didn't need to know that.
He left and checked out the doors and windows of my other neighbor's place. He didn't check mine. I guess he figured I had enough protection.
But, if you have just one dog, you should be able to train them to cut out that racket when you say a word like ENOUGH! I mean, yes, they are guard dogs, and you do want them to alert. But a guard dog is worthless if it alerts all the time, and about anything and nothing. You tune that crap out. Rather, you listen for a business bark, or at least I do. A dog should not bark without ceasing, I will tell mine THANK YOU, when they let me know someone is at the door. If they continue, I will tell them ENOUGH. That lets them know that I know who it is, and it is ok.
Oh, heck, I don't know what the heck they understand about it, but they seem to realize by the tone of my voice that whatever they were doing has to stop, NOW.