Ohio MARCS-IP: Multi-Agency Radio Communications
Misc System Information
This is the Ohio MARCS migration to the P25 platform, which replaced the old Type II / P25 CAI system.
IP in the title refers to the fact that system infrastructure is interconnected via IP routers and switches rather than by traditional circuit switched methods.
The system is Phase 2 capable but this mode is not currently enabled. The system and sites will require software upgrades before this mode can be used and it will likely be some time before it becomes available.
Sites with an actual name different from the physical location are listed as Site Name (Physical Location).
Mobile sites 5A1 and 649 are stand-alone sites which can be placed anywhere in the state in a matter of hours to supplement coverage and/or to add capacity to an area where an emergency or event is occurring. While normally operated as stand-alone systems, they can be connected to the statewide system and appear as networked sites if necessary. Information on these systems can be found at:
System 5A1 - https://www.radioreference.com/apps/db/?sid=10282
System 649 - https://www.radioreference.com/apps/db/?sid=10283
Be sure to check county-level Wiki pages for detailed information regarding user agencies of this system.