+=item ratetimenum - rating time period (see L<FS::rate_time) if any
+
+=item cdrtypenum - CDR type (see L<FS::cdr_type>) if any for this rate
+
+=item region_group - Group in region group for rate plan
+
+=item upstream_mult_charge - the multiplier to apply to the upstream price.
+Defaults to zero, and should stay zero unless this rate is intended to include
+a markup on pre-rated CDRs.
+
+=item upstream_mult_cost - the multiplier to apply to the upstream price to
+calculate the wholesale cost.
+