] Justice Department officials have evidence that MCI may,
] in effect, have "laundered" calls through small
] telephone companies, and even redirected domestic calls
] through Canada, to avoid paying access fees or shift them
] to rival long-distance carriers, according to people
] involved in the investigation.
]
] The lawyers told the investigators that the
] tests also showed that the billing codes that are
] transmitted with telephone calls in data packets had been
] doctored.

MCI Faces Federal Fraud Inquiry on Fees for Long-Distance Calls