After some research on the WEB, it’s clear that, in VDL2, Hexa messages (“ISO 8208 message Data (hexa)”) beginning by “1B FF” are CPDLC messages, but I didn’t find documents describing the bit fields, so they will remain a mystery…
De : email@example.com [mailto:firstname.lastname@example.org] De la part de Josef Garcia
it is not displayed in VDL2 under Multipsk. I received this example under Multipsk/HFDL "Message Type: AA" and made it visible with the CPDLC Online Decoder. The CPDLC messages are the same under HFDL and VDL2.