Analysis of Network Outage Reports1

Cybersecurity and Communications Reliability Division – Public Safety & Homeland Security Bureau

John Healy

December 2015

Frequency of Outages by Month2

Standards for Outage Frequencies

Took average of January 2012 through December 2012 as the standard

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Outage Index – For All Outages Except DS3-Simplex

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See ATIS-0100021 Analysis of FCC-Reportable Service Outage Data for a description of the method used to calculate the outage index.

Procedural Events by Source5

New Planned Maintenance Cause Codes

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DS3 (Non-Simplex) Events7

Over the Last 4 Months• Hardware Failures

are up• Power Failures are

up• Cable Damage

events are up

Big DS3 Outages8

DS3-Simplex9

Fiber Cut10

E91111

Very Large E911 Outages12

E911 – Phase 2 Events13

Phase 2 vs. All Other E911 Outages14

Wireline15

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

Wireless16

VoIP Reporting17

Environmental – External18

SS7 19

Malicious Events20

Malicious Activity21

*Please note the total for 2015 is thru September.

Year Vandalism Cable Theft Gun ShotsTotal Malicious

Events

2012 35% (83) 8% (18) 7% (15) 207

2013 37% (83) 4% (9) 9% (22) 224

2014 51% (99) 6% (11) 11% (22) 193

2015 42% (75) 7% (13) 12% (21) 180*

Duration Trends: DS3 Non-Simplex

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DS3 Non-Simplex Outages are statistically shorter in 2015 compared with 2014 (using a Mann-Whitney test)

Duration Trends: E911

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E911 Outages are statistically longer in 2015 compared with 2014 (using a Mann-Whitney test)

Duration Trends: Wireline

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The duration of wireline outages is statistically unchanged from 2014 to 2015 (using a Mann-Whitney test)

Duration Trends: Wireless

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The duration of wireless outages is statistically unchanged from 2014 to 2015 (using a Mann-Whitney test)

Test for Trend in Event Duration

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Non-DS3-Simplex OutagesData from 1/12 thru 9/15

Conclusion: Non DS3-Simplex Outages are unchanged in duration from 1/12 to 9/15

DS3-Simplex Events OnlyData from 1/12 thru 9/15

Conclusion: DS3-Simplex Events are unchanged in duration from 1/12 to 9/15

Rank Correlation of duration with date is -.010 and is not significant at the .01 level

Rank Correlation of duration with date is -.011 and is not significant at the .05 level

911 Certification

Preparing a public report with the non-confidential information

Having discussions with companies about their filings

Comments and suggestions are greatly appreciated

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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

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