Interbet not required for DMR
Digital voice modes do not require internet to function. If the internet is down the repeater will act much like an analog repeater with clearer audio. Quite often clubs setup a repeater without internet initially for testing.
All of the digital voice rigs that I know of have analog FM capability. A DMR rig is not exactly a one-trick pony. Of all the modes of digital voice the DMR rigs are most reasonably priced. Many of DMR rigs are less than $100.
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