Related Clues:

• Gave a buzz
• Tried to get hold of
• Hierarchy level
• Called
• Phoned
• Heralded
• Step on a ladder
• Called the butler, in a way
• Took its toll?
• Sounded, as an opening bell
• Pushed the doorbell
• Summoned help, maybe
• Summoned the butler
• Emulated Quasimodo
• Part of a ladder