What does a DMR “code plug” contain?

In Digital Mobile Radio (DMR), a 'code plug' is essentially a configuration file containing the programming necessary for the radio to operate on specific networks. This includes repeater frequencies, color codes, time slots, and talkgroups. Because programming a DMR radio manually from the keypad is complex and tedious, users typically create or download a code plug using software on a computer and then upload it to the radio. A code plug is purely a configuration file; it is not the digital audio codec itself (which handles digitizing voice), nor is it the radio's firmware or a CW identification file.