[Tilted Irish Kilt]

WITHOUT SWORN TESTIMONY YOU HAVE ........ (crickets!)

[Scoutmaster]

To be specific, Federal Rules of Evidence 901(b)(6) allows telephone conversations if:

Telephone conversations, by evidence that a call was made to the number assigned at the time by the telephone company to a particular person or business, if (A) in the case of a person, circumstances, including self-identification, show the person answering to be the one called, or (B) in the case of a business, the call was made to a place of business and the conversation related to business reasonably transacted over the telephone.