184.108.40.206. Frame De-encapsulation
A /V/ character is decoded and sent to the MAC function as frame error. The state machine decodes sequences other than /I/ /I/ (Idle) or /I/ /S/ (Start of Frame) as wrong carrier.
During frame reception, the de-encapsulation state machine checks for invalid characters. When the state machine detects invalid characters, it indicates an error to the MAC function.