As Ken has indicated, Middlesex County OEM Fire Coordinators utilize the County's 800 MHz EDACS system. These are all still analog. Here are some of the talk groups:
1297 OEM Central
1298 OEM EMS Mutual Aid Coordinators
1299 OEM Fire Mutual Aid Coordinators
1301 OEM
1302 OEM Field Operations
1303 OEM
1304 OEM Scene Management 1
1313 Hazmat
1314 Hazmat
1319 Hazmat
OEM and Hazmat also still use 155.955 (103.5)
The County also has a license for a fire mutual aid frequency of 453.575 (CTSS 107.2). Rarely hear anything on it. Many communities also still use 33.82 for page-outs.
Hope this helps.
Bruce