Carcell on Traccar TCP 5114 frames on CR. Pattern starts with memory flag $ or %, IMEI, then either NMEA-style N/S ddmm.mmmm pairs or a CEL, branch with decimal lat/lon. Traccar’s CarcellProtocol also registers engine stop/resume data commands — Traxelio still catalogues positions_only and does not claim operator command delivery.
CR + CEL, on 5114
AutoGrade uses ) on 5120; Carscop uses ^ on 5040. Carcell’s CR terminator and optional CEL, token are the fingerprint.
Catalogue stance
Stock Traccar reference for decoder/port. Traxelio does not invent full command support beyond positions_only.