DeKalb County Fire, as posted above, dispatches all 26 stations via the digital trunked system. This do this on the "DISPATCH" talkgroup and all apparatus respond on the "OPERATIONS" talkgroup unless otherwise assigned to one of the selective battalion "TAC" talkgroups. As far as I know, the only you MIGHT be able to set up alerts for certain stations, and I believe it might only apply at night, would be to find our the A&B two-tone alerting code for each station. I worked in DeKalb for the past five years about 500 yards from Station 1 ("Emory Guard") and if I recall correctly, during daylight hours, the Dispatchers simply use a single alerting tone (either once or twice). There is too much radio traffic to employ the paging in the daytime; besides, the firefighters are awake and don't required the tones that set off the horns, turn on the lights, etc.
Way more than you asked but hopefully this helps. DeKalb is a very busy department and I've always enjoyed listening to them. They still have a fairly high ratio of fires due to the very high number of apartment complexes.
Western North Carolina
WQIT636 - Atlanta