It's just a matter of interpretation. Currently, PIPEDA does not recognize telephone accounts. That was the reason for the difference between the definition in the PIPEDA amendments and the definitions up front in ECPA, where we are recognizing all electronic addresses. I think it would cause a problem for the Office of the Privacy Commissioner to interpret only these two clauses under PIPEDA as including telephone accounts.
On October 26th, 2009. See this statement in context.