Cube Green latest MP and Firmware
Telem1 port (Serial 1) GND, TX and RX pins only
Serial TTL at Modem TX-RX, RX-TX confirmed
UDP at 14550 send and receive ports both ends
Baud tested at 57600 and 115200 both same result
Modem and MP links established on both APM 2.5, Pixhawk and Emlid at 57 & 115
Also Tested modem as VCP with failed connections
Also Tested modem as UDP Server and Client Modes with failed connections
Also Tested modem as TCP Server and Client Modes on Port 5760 with failed connections.
Modems are linked
Ethernet is tested and verified on Air and Ground
Unable to establish MAVLink
At a Loss …Help would be Great…Software? UART? Firmware?