Pursuant to General Order (GO) 133-D Section 6.4, the Communications Division posts wireline service quality reports and information to help telephone customers make informed decisions when selecting a telephone service provider.

Reports on Overall Annual Carrier Service Quality Performance:

  • March 2011Communications Division's Report on Wireline Telephone Carrier's 2010 Service Quality Performance
    The report discusses the service quality results for 2010 submitted pursuant to GO. 133-C. The findings and conclusions in the report are based on the data reported by the respective companies. The report also addresses the responses of AT&T California and Verizon California to the severe winter storms that caused wide-spread service outages in Southern California during the months of December 2010 and January 2011.

    Other Reports:

      The report examines the causes of major customer outages of the state's communications networks during the severe storms of January and February 2017, when California experienced the most rainfall in recorded history. The report informs the Commission on the quality and reliability of the state's communications infrastructure and highlights ways to improve public safety.

      Reference Information:



      URF ILECs

      • AT&T California: 1st Quarter | 2nd Quarter | 3rd Quarter | 4th Quarter
      • Consolidated: 1st Quarter | 2nd Quarter | 3rd Quarter | 4th Quarter
      • Frontier Communications of CA / Citizens: 1st Quarter | 2nd Quarter | 3rd Quarter | 4th Quarter
      • Frontier California: 1st Quarter | 2nd Quarter | 3rd Quarter | 4th Quarter
      • Frontier Communications of the Southwest: 1st Quarter | 2nd Quarter | 3rd Quarter | 4th Quarter

      URF CLECs

      • Brighthouse Networks: 1st Quarter | 2nd Quarter | 3rd Quarter | 4th Quarter
      • Charter Communications: 1st Quarter | 2nd Quarter | 3rd Quarter | 4th Quarter
      • Cox: 1st Quarter | 2nd Quarter | 3rd Quarter | 4th Quarter
      • Paetec: 1st Quarter | 2nd Quarter | 3rd Quarter | 4th Quarter
      • Sonic: 1st Quarter | 2nd Quarter | 3rd Quarter | 4th Quarter
      • Time Warner: 1st Quarter | 2nd Quarter | 3rd Quarter | 4th Quarter

      GRC LECs

      • Calaveras: 1st Quarter | 2nd Quarter | 3rd Quarter | 4th Quarter
      • Cal-Ore: 1st Quarter | 2nd Quarter | 3rd Quarter | 4th Quarter
      • Ducor: 1st Quarter | 2nd Quarter | 3rd Quarter | 4th Quarter
      • Foresthill: 1st Quarter | 2nd Quarter | 3rd Quarter | 4th Quarter
      • Happy Valley: 1st Quarter | 2nd Quarter | 3rd Quarter | 4th Quarter
      • Hornitos: 1st Quarter | 2nd Quarter | 3rd Quarter | 4th Quarter
      • Kerman: 1st Quarter | 2nd Quarter | 3rd Quarter | 4th Quarter
      • Pinnacles: 1st Quarter | 2nd Quarter | 3rd Quarter | 4th Quarter
      • Ponderosa: 1st Quarter | 2nd Quarter | 3rd Quarter | 4th Quarter
      • Sierra: 1st Quarter | 2nd Quarter | 3rd Quarter | 4th Quarter
      • Siskiyou: 1st Quarter | 2nd Quarter | 3rd Quarter | 4th Quarter
      • Volcano: 1st Quarter | 2nd Quarter | 3rd Quarter | 4th Quarter
      • Winterhaven: 1st Quarter | 2nd Quarter | 3rd Quarter | 4th Quarter

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      The contents of the reports are as filed by the companies, with the calculations of exclusions according to the companies’ interpretation of G.O. 133-C and D. 09-07-019, as well as G.O. 133-D and D. 16-10-019. CPUC staff has not attested to the accuracy of the companies’ exclusions or calculations.

      Related Divisions