Jetties can be on either the eave or gable walls.
In the Uk we might describe these as the sidewalls and end crossframes.
Those on the end crossframes are called "end jetties".
Those on the sidewalls, eavewall, are called simply "jetties"
These sidewall jetties can be in one piece called " continuous jetties" this was a fashion, circa late 1400s to early 1500s that came after the end jetty and the Wealden house facade, that ken has mentioned.
