DMR Conventional Digital
Small, local networks working in a restricted coverage area can operate in direct mode whereby radios communicate directly with each other without the need for any supporting infrastructure. This can be in a hand-held portable or a vehicular/desktop mobile radio.
Larger systems use a repeater to extend the coverage area. The repeater may be connected to a dispatcher or other type of console, or it can be standalone. Systems may range from a single site repeater to a network of multi-site repeaters with an IP link.