Related Clues

• Modern phone feature
• Automatic phone feature
• Phone button
• Phone feature
• Telephonic timesaver
• Respond to a busy signal, perhaps
• Ring twice
• Call again
• Word on a telephone button
• 'Automatic' telephone feature
• Phone function
• Phone again
• Derail badly - having come off the line, you might?
• "Call again" phone feature
• Call back