[a. 获取通道列表](a.%E8%8E%B7%E5%8F%96%E9%80%9A%E9%81%93%E5%88%97%E8%A1%A8.md) [b. 指定通道抬闸/落闸](b.%E6%8C%87%E5%AE%9A%E9%80%9A%E9%81%93%E6%8A%AC%E9%97%B8/%E8%90%BD%E9%97%B8.md) [c. 下发通道二维码](c.%E4%B8%8B%E5%8F%91%E9%80%9A%E9%81%93%E4%BA%8C%E7%BB%B4%E7%A0%81.md)