Note: This is a listing of deprecated systems. These systems are either no longer in use or have been superceded by another system.
| System Name | Type | Flavor | City | County | Updated |
|---|---|---|---|---|---|
| Connecticut State Police | Motorola | Type II SmartZone | Statewide | Statewide | 2019-09-20 |
| Greenwich | Motorola | Type II SmartZone | Greenwich | Fairfield | 2020-04-25 |
| Hartford Hospital | Project 25 | Phase I | Hartford | Hartford | 2022-01-31 |
| Marcus Communications - Norwich | EDACS | Standard | Norwich | New London | 2024-08-19 |
| New Britain | Project 25 | Phase II | New Britain | Hartford | 2020-03-16 |
| Rentschler Stadium (LTR) | LTR | Standard | East Hartford | Hartford | 2024-01-18 |
| Stamford | Project 25 | Phase I | Stamford | Fairfield | 2021-01-29 |
| Vernon Board of Education | LTR | Standard | Vernon | Tolland | 2013-01-01 |
| Waterbury, CT - Old replaced by current system | LTR | MultiNet | Waterbury | New Haven | 2013-05-22 |
| Wethersfield (Motorola) | Motorola | Type II Smartnet | Wethersfield | Hartford | 2021-05-14 |
| Windsor | LTR | Standard | Windsor | Hartford | 2021-04-21 |