1. Analysis of Network Outage Reports
Cybersecurity and Communications Reliability Division – Public Safety & Homeland Security Bureau
John Healy
December 2016

2. Frequency of Outages by Month
Monthly Trend 1.2%

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

4. New Planned Maintenance Cause Codes
Monthly Trend
2.3%
Up from 2.1%

5. DS3 (Non-Simplex) Events
Monthly Trend 2.0%

6. Big DS3 Outages

7. Big DS3 Outages
Monthly Trend 2.5%

8. DS3-Simplex
Monthly Trend 1.1%
Up from 0.8%

9. Fiber Cut
Monthly Trend 0.5%
Down from 0.7%

10. E911
No Trend

11. Very Large E911 Outages
No Trend

12. E911 – Phase 2 Events
No Trend

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

14. Wireless
Monthly Trend 0.0%
Up from -0.5%

15. Monthly Trend 2.3% Up from 2.0%
VoIP Reporting
Monthly Trend 2.3% Up from 2.0%

16. Environmental – External
Monthly Trend 1.2% Down from 1.4%

17. SS7
Monthly Trend -1.1%

18. Malicious Events
Monthly Trend -1.6%
Down from 0.0%

19. Malicious Activity
The figures for 2016 are through September.

20. Hardware Failure
Monthly Trend 0.9%

21. Power Failure
Monthly Trend 2.6%

22. Diversity Failure
Monthly Trend 4.4%

23. 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

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

25. Duration Trends: Wireline
The duration of Wireline outages is statistically unchanged in 2016 compared with 2015 (using a Mann-Whitney test).
110

26. Duration Trends: Wireless
The duration of wireless outages is statistically unchanged from 2015 to 2016 (using a Mann-Whitney test). 12

27. Duration Trends: DS3 Simplex
The duration of DS3 simplex outages increased from 2015 to 2016 (statistically significant using a Mann-Whitney test).
234
208

28. Duration Trends: Other Special Facilities
The duration of other special facilities outages is statistically unchanged from 2015 to 2016 (using a Mann-Whitney test). 7

29. Duration Trends: VoIP
The duration of VoIP outages is statistically unchanged from 2015 to 2016 (using a Mann-Whitney test). 10

30. Test for Trend in Event Duration
Non-DS3-Simplex Outages
Data from 1/2014 thru 9/2016
DS3-Simplex Events Only
Data from 1/2014 thru 9/2016
Rank Correlation of duration with date is and is significant at the level
Rank Correlation of duration with date is .016 and is not significant at the .05 level
Conclusion: Non DS3-Simplex Outages are shorter in duration from 1/2014 to 9/2016
Conclusion: DS3-Simplex Events are unchanged in duration from 1/2014 to 9/2016

31. NORS Transition
NORS coordinators began to test the new system in April
June 2 - Training session on the new NORS
August 29 – Public Notice on new NORS is published
August 31 – CenturyLink, T-Mobile and Verizon cutover to new platform
September – Remaining companies cutover to new platform

32. 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
Silent failures