Chapter 3
3.5 Single Toll-free Statewide Telephone Number with Nationwide Access

Practice Statement:
All one call centers have a single toll free statewide telephone number with nationwide access.
Practice Description:
There is only one statewide toll-free telephone number for one call centers to receive locate requests. This number has nationwide access, meaning that a caller can reach the center from anywhere in the country.
References:
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One Call Systems International Voluntary Recognition Program
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Existing operating practices from various states’ one call centers
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49 CFR Part 198
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NTSB Safety Study (NTSB/SS-97/01; PB97-917003)