Communications on a DV/IP digital radio system may be "logged" or "recorded" using DWC's digital DN-100 Logging Recorder. The DN-100 stores communications on its internal harddisk, and the harddisk contents may be periodically archived to another computer's harddisk, by way of Ethernet or the Internet, or recorded on CD-ROM, DVD-ROM, or any other standard computer storage media, and stored indefinitely.

Playback is made possible by DWC's DN-150 Archive Playback Software. The software, which runs on any desktop PC running either MS Windows 2000 or Windows XL operating system, allows an archive of communications messages to be searched based on a number of criteria, such as date, time, group, unit ID, and so forth.

Each individual transmission is stored as a "*.dwc" packet audio file and large numbers of files are stored in a proprietary database. The parameters of each's transmission's message header may be searched and sorted. Consequently, communications interchanges, i.e., conversations, may be recreated for later analysis. The user can select a series of transmissions for playback, or any individual transmission. The program displays the date and time of the start of the transmission, the user ID of the radio used, the Group ID that the transmission used, and the size of the file and the duration of the transmission.

The archived files also include the latitude, longitude, heading, speed and altitude of the trabsmitting radio. Therefore, if DWC's DS-500 Desktop Mapping Software is running on the same desktop computer, the geographic location of the archived transmissions may be displayed on a map.

Because DV/IP transmissions are stored and sorted based on unit and group IDs, the user does not have to take into account the site or channel the communications originally occurred on.

The DN-150 program requires a DC-100 Desktop Dispatch Gateway to reproduce the digital audio. Audio quality is exactly the same as the real time DV/IP digital audio as heard originally in real time. During audio playback, an external recorder, such as a cassette tape, Redbook audio CD recorder or any other audio recording system, may be used to make analog copies of one or more transmissions.