The Baofeng radio is Tier 1 DMR only, meaning it won't decode Tier 2 systems, which most are. Tier 1 = 1 time slot. Tier 2 = 2 time slots.
Umm HUH? Nope, wrong on tier points. If that was so, Tier 3 would be 3 Time Slots... Which is so not true, DMR is 2 Slot TDMA on ALL tiers.
DMR Tiers
[edit] DMR Tier I
DMR Tier I products are for license-free use in the 446 MHz band in the European Union.
This part of the standard provides for consumer applications and low-power commercial applications, using a maximum of 0.5 watt RF power. With a limited number of channels and no use of repeaters, no use of telephone interconnects, fixed/integrated antennas, and a talk timer of 180 seconds, Tier I DMR devices are best suited for personal use, recreation, small retail and other settings that do not require wide area coverage or advanced features.
In North and South America the 446.0 - 446.2 MHz band is part of the amateur radio 70 cm band and requires an amateur radio license.
[edit] DMR Tier II
DMR Tier II covers licensed conventional radio systems, mobiles and hand portables operating in PMR frequency bands from 66-960MHz. The ETSI DMR Tier II standard is targeted at those users who need spectral efficiency, advanced voice features and integrated IP data services in licensed bands for high-power communications. ETSI DMR Tier II specifies two slot TDMA in 12.5 kHz channels.
DMR Tier II is based on the following ETSI standards.
ETSI TS 102 361-1 Air interface
ETSI TS 102 361-2 Voice and generic services and facilities
ETSI TS 102 361-3 Data protocol
[edit] DMR Tier III
DMR Tier III covers trunking operation in frequency bands 66-960MHz. The Tier III standard specifies two slot TDMA in 12.5kHz channels. Tier III supports voice and short messaging handling similar to MPT 1327 with built-in 128 character status messaging and short messaging with up to 288 bits of data in a variety of formats. It also supports packet data service in a variety of formats, including support for IPv4 and IPv6.