Unfortunately, I don't remember. But when you get there, ask the conductor at the railway station, and they will give you a warm answer. When I first arrived at Sydney airport, I asked a staff member how to get to her home by bus. She thought for a moment, told me that it was more convenient to take the train, and then told me where to take the train. Then the consultant at the railway station told me which bus I should take. There are signs on the platform, which are easy to find.