node-dmr-lib

Motorola MotoTRBO DMR protocols research project.

Supported protocols:

ARS (Automatic Registration Service)
LRRP (Location Request Response Protocol)
TMS (Text Message Service)
BMS (IMPRES Battery Management)
HomeBrew (HBLink repeater protocol)
IPSC (IP Site Connect)
XCMP (Extended Control & Management Protocol)
XNL (XCMP Network Layer)
NMEA over DMR UDT: Short (ETSI specs) and Legacy (Ailunce and TYT radios).

Services:

IPSCPeer - IPSC peer node, maintains master connection and provides DMR sending/receiving.
DMRIPGateway - DMR to UDP/IP gateway. Connects to the IPSCPeer.
DMRServices - ARS/LRRP/BMS service. Connects to the DMRIPGateway.
AMBEClient - Client for AMBE server for encoding/decoding voice frames (example)

Supported encodings/checksums:

BPTC 196/96
CRC 9/16/32
Hamming
Trellis
Golay 20/8/7
AMBE (conversion from 72 to 49 bit and vise-versa)
Quadratic residue (QR) 16/7/6
Reed-Solomon 12/9

Supported IP features:

UDP/IP4 over dmr (plain)
UDP/IP4 over dmr (DMR Standart header compression)
UDP/IP4 over dmr (Advantage header compression)

Supported DMR blocks:

DataHeader (Unified, Response, Confirmed, Unconfirmed, Proprietary, ProprietaryCompressed)
CSBK (CallAlertACK, CallEmergency, Preamble)
Rate 1/2 and 3/4 data
DataBlock with CRC32 (encapsulates IP packets)

Some development information can be found in dev folder.

Credits

Thanks to the following projects:

Full readme coming soon...