47 C.F.R. § 61.16 Base documents.
Title 47 - Telecommunication
(a) The Base Document is a complete tariff which incorporates all effective revisions, as of the last day of the preceding month. The Base Document should be submitted with a cover letter as specified in §61.15(f) of this part and identified as the Monthly Updated Base Document. (b) Initially, carriers that currently have tariffs on file with the commission must file a Base Document within five days of the initiation of mandatory electronic filing. (c) Subsequently, if there have been revisions that became effective up to and including the last day of the preceding month, a new Base Document must be submitted within the first five business days of the current month that will incorporate those revisions.
Title 47: Telecommunication
PART 61—TARIFFS
Subpart B—Rules for Electronic Filing
§ 61.16 Base documents.

