Related Clues:

• Crosspiece on a ladder
• Sounds as if that's what happened to the belle on the up an up
• The belly sound was made on the ladder
• The belly sound was 10 across
• Set the bell off when you put your foot on it
• Pealed in the ladder
• Phoned to get you up
• Gave one a ring
• The bell had gone off on the ladder
• Engaged a clapper?
• Hierarchical level
• Level in a hierarchy
• Summoned, with "for"
• __ a bell: was familiar
• Called for a peeled orange