3.7 Voice Record of All Incoming Calls

One Call Center

Practice Statement:

A voice recording is maintained of all voice transactions concerning requests to locate facilities.

Practice Description:

A voice recording of telephone communications for locate requests is made to ensure that a precise record of the activity is retained. This recording can be legally supported in court as well as used for damage investigations.


  • One Call Systems International Voluntary Recognition Program
  • Existing operating practices from various states’ one call centers
  • 49 CFR Part 198
  • NTSB Safety Study (NTSB/SS-97/01; PB97-917003)


One Call Center One Call Center

Facility Owner Facility Owner

Excavator Excavator

Locator Locator

Project Owner Project Owner

Designer Designer