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Attachment A - Joint Agreement for 800 MHz CCCS Page 66 of 83 The Lead Agency is responsible for managing this policy. All agencies electing to use console patching are responsible for establishing and managing internal patch procedures and complying with this policy. 6.3 Use of the Statewide and National Interoperability Channels Purpose or Objective Defines the procedures for A use of the conventional Statewide and National interoperable radio channels for communications between radio users of disparate radio systems and/or different frequency bands. Technical Background The FCC has designated certain VHF, UHF, 700 MHz & 800 MHz frequency pairs to be used exclusively for conventional interoperable communications between public safety radio users. Each frequency band includes a calling/hailing channel to be used in contacting the coordination center for the local operational area. Additionally, each frequency band includes channels for tactical operations in both repeater and direct "talkaround" modes. In the Orange County Operational Area, these channels are coordinated by the Control One. All CCCS Partner Agency radios include many of the 700 MHz and 800 MHz interoperability channels in their standard radio programming template. Additional information on these channels, including channel names and general use, can be found in the discipline specific Orange County Cfflcial Communications Handbook (Radio Code Book) available to Partner Agencies through the Lead Agency. The Lead Agency also maintains repeater systems with Interoperable channels in the VHF and UHF frequency bands which are available to CCCS Partner Agency users through a gateway patch on the Control One radio console. This allows CCCS radio users to be patched to a non- 800 MHz radio system for interoperable communications with the users of that system. Operational Context These designated interoperable communications resources can be used for day-to-day interagency coordination, for urgent or emergency mutual aid situations, and/or for other purposes where coordination between radio users on separate 800 MHz radio systems or non- 800 MHz radio systems must communicate to perform assigned duties. These channels shall not be used for regular communications between radio users with full access to the CCCS, except when authorized and assigned by Incident Command. Protocol/Standard The 700 MHz and 800 MHz interoperability channels are programmed into the radio template of all CCCS subscriber radios. These channels may be used when traveling outside the coverage area of the CCCS System and are used to communicate with another 800 MHz radio system with base and/or mobile radios on those channels.