47 CFR § 64.2111
Covered provider rural call completion practices
February 16, 2021
For each intermediate provider with which it contracts, a covered provider shall:
(a) Monitor the intermediate provider's performance in the completion of call attempts to rural telephone companies from subscriber lines for which the covered provider makes the initial long-distance call path choice; and
(b) Based on the results of such monitoring, take steps that are reasonably calculated to correct any identified performance problem with the intermediate provider, including removing the intermediate provider from a particular route after sustained inadequate performance.
[83 FR 21737, May 10, 2018]