Residential customers are billed in 1 minute increments.
Business customers are billed in 6 second with 30 second minimum.
A $0.99 billing fee applies to Local Billing ( LEC ) customers.
INTERSTATE
TierA = Ameritech Bell Atlantic Bell South Nynex SBC PacTel and US West
TierB = Cincinnati Bell GTE Global Crossing SNET and Sprint/United
TierC= NECA and all remaining carriers