8Call/8Tac 7Fire/7Med are American terms for American interop channels.
And Canada as well, at least for the 700 MHz frequencies which are the same in the US; Canada still uses the pre-rebanding 866-868 frequencies for interop however, although that's got to complicate things along the border.
To the OP: I concur with other commenters; I've been in this line of work for nearly 35 years, and you really need to discuss and plan a proper template which includes conventional interop channels, and which suits your needs. Don't just let some drone tell you what you need; you can solicit their input, but discuss it with your neighboring agencies first as well as within your own agency.