OptionallangTAKTALK language tag from
OptionalmessageThe chat message text.
OptionalreceiptFor a receipt: the UID of the original message being acknowledged.
Optionalreceipt0 = None, 1 = Delivered, 2 = Read
OptionalroomTAKTALK room UUID from
OptionaltoDestination chatroom / recipient ID; the "All Chat Rooms" broadcast sentinel is elided.
OptionaltoSender callsign (from the <__chat senderCallsign="…"> attribute).
OptionalvoiceTAKTALK voice profile pointer from <voice_profile_id>. Often empty even when present — the empty marker is still a TAKTALK origination signal. Use "field is defined at all" to distinguish from "absent".
GeoChat message or receipt.