DMR tiers I and II (conventional) were first published in 2005, and DMR III (Trunked version) was published in 2012, with manufacturers producing products within a few years of each publication.
DMR I和II（常规）于2005年首次发布，DMR III（集群版本）于2012年发布，制造商通常会在每个版本发布后的几年内生产产品出售。