Analysis of Network Outage Reports Cybersecurity and Communications Reliability Division – Public Safety & Homeland Security Bureau John Healy February 2017

Frequency of Outages by Month Monthly Trend 1.3% (up from 1.2%)

Outage Index – For All Outages Except DS3-Simplex See ATIS-0100021 Analysis of FCC-Reportable Service Outage Data for a description of the method used to calculate the outage index.

New Planned Maintenance Cause Codes Monthly Trend 2.5% (up from 2.3%)

DS3 (Non-Simplex) Events Monthly Trend 1.9% (down from 2.0%)

Big DS3 Outages

Big DS3 Outages Monthly Trend 2.4% (down from 2.5%)

DS3-Simplex Monthly Trend 1.5% (up from 1.1%)

Fiber Cut Monthly Trend 0.8% (up from 0.5%)

E911 Monthly Trend 0.6% (up from 0%)

Very Large E911 Outages No Trend

E911 – Phase 2 Events Monthly Trend 1.2% (up from 0%)

Wireline Monthly Trend -0.9% Wireline outages are all outages for which the Reason Reportable was at least 900,000 wireline user-minutes.

Wireless No Monthly Trend

Monthly Trend 3.4% (up from 2.3%) VoIP Reporting Monthly Trend 3.4% (up from 2.3%)

Environmental – External Monthly Trend 1.4% (up from 1.2%

SS7 Monthly Trend -1.4% (down from -1.1%)

Malicious Events Monthly Trend -2.2% (down from -1.6%)

Malicious Activity The figures for 2016 are through December.

Hardware Failure Monthly Trend 1.3% (up from 0.7%)

Power Failure Monthly Trend 2.3% (down from 2.6%)

Diversity Failure Monthly Trend 3.4% (down from 4.4%)

Duration Trends: DS3 Non-Simplex The duration of DS3 non-simplex outages is statistically unchanged in 2016 compared with 2015 (using a Mann-Whitney test). 11

Duration Trends: E911 The duration of E911 outages is statistically unchanged in 2016 compared with 2015 (using a Mann-Whitney test). 6

Duration Trends: Wireline The duration of Wireline outages is statistically unchanged in 2016 compared with 2015 (using a Mann-Whitney test). 107

Duration Trends: Wireless The duration of wireless outages is increased from 2015 to 2016 (statistically significant p=.02 using a Mann-Whitney test). 13 12

Duration Trends: DS3 Simplex The duration of DS3 simplex outages increased from 2015 to 2016 (statistically significant using a Mann-Whitney test). 243 208

Duration Trends: Other Special Facilities The duration of other special facilities outages is statistically unchanged from 2015 to 2016 (using a Mann-Whitney test). 6

Duration Trends: VoIP The duration of VoIP outages is statistically unchanged from 2015 to 2016 (using a Mann-Whitney test). 9

Test for Trend in Event Duration Non-DS3-Simplex Outages Data from 1/2014 thru 12/2016 DS3-Simplex Events Only Data from 1/2014 thru 12/2016 Rank Correlation of duration with date is -.019 and is significant at the .0001 level Rank Correlation of duration with date is .048 and is significant at the .001 level Conclusion: Non DS3-Simplex Outages are shorter in duration from 1/2014 to 12/2016 Conclusion: DS3-Simplex Events are longer in duration from 1/2014 to 12/2016

NORS Transition February 2 – Testing on the ServiceNow platform begins February 8 – Demo of the NORS 3.0 March 2 – Testing ends Early March – Move to the production version of NORS 3.0

NRSC Activities Current Teams Best Practices Team Outage Reporting Advisory Team Improvements to the NORS System Improvements to the template Recommended ways to communicate information Improvements to NORS/DIRS manuals IP Transition Team Consistent Use of Cause Codes Planned Maintenance Team Silent failures