Possible Clues:

• Good horseshoe toss
• It's very like someone telling you it's the phone
• A dead one looks like something else
• Call with hesitation someone who shouldn't be competing?
• Caller providing a solution
• One making the toll double
• T-shirt type
• Performer in the belfry -- guest brought in by team?
• Doppelganger's clanger?
• Campanologist - if dead, double