Focus Group 2 Network Reliability

1
Focus Group 2Network Reliability

• PJ Aduskevicz, ATT
• Ross Callon, Juniper
• Wayne Hall, Comcast

2
Focus Group Membership

• PJ Aduskevicz, ATT
• Jeff Barrows, Firefly Networks
• Ron Bath, VoiceStream
• Dan Benyon, Cisco
• Ken Biholar, Alcatel USA
• Ken Buckley, Federal Reserve Board
• Jane Builder, VoiceStream
• Rex Bullinger, NCTA
• Ross Callon, Juniper
• Rick Canaday, ATT
• Kevin Cavanagh, ATT Wireless
• William Check, NCTA
• Wayne Chiles, Verizon
• Joe Craig, Qwest
• Victor Devito, ATT
• Bernie Farrell, NCS
• David Fears, Cox Communications
• Perry Fergus, Booz Allen Hamilton
• Lee Fitzsimmons, Nextel

• Brian Goemmer, Western Wireless
• Jeff Goldthorp, FCC
• Chris Gunner, Avici Systems
• Ed Hall, ATIS
• Thomas Hall, MFN
• Wayne Hall, Comcast
• Rick Harrison, Telcordia
• Paul Hart, SBC
• Jake Hartinger, Cisco
• John Healy, FCC
• Dean Henderson, Nortel Networks
• Bob Holley, Cisco
• Bruce Johnson, Verisign
• Lynn Johnson, Boeing
• Rick Kemper, CTIA
• Jay Kitchen, PCIA
• Bill Klein, ATIS
• Bernie Ku, WorldCom
• Jim Lankford, SBC

3
Focus Group Membership

• Greg Larson, Exodus/CWUSA
• Mike Lecocke, SBC
• Chris Liljenstolpe, CW
• Virgil Long, Tekelec
• Chris MacFarland, Allegiance
• Spilios Makris, Telcordia
• Joseph Maloney, Hughes
• Archie McCain, BellSouth
• Mike Meyers, Microsoft Corp.
• Art Menko, BPI Telcodata
• Brian Micene, ATT Wireless
• Denny Miller, Nortel
• Kent Nilsson, FCC
• Eamon OLeary, ATT Wireless
• Gary Pellegrino, CommFlow Resources
• Bonnie Petti, Verizon Wireless
• Sam Phillips, BITS
• Tom Purcell, Nextel
• Karl Rauscher, Lucent

• Ira Richer, The Telesis Group
• Gary Roboff, BITS
• Jim Runyon, Lucent
• Sonia Sakovich, Sprint
• Harold Salters, Voicestream
• Dan Schutzer, BITS
• Andy Scott, NCTA
• Pete Shelus, Telcordia Technologies
• Ken Silva, Verisign
• Don Smith, NCS
• Ron Stear, CW
• Sandy Stephens, Focal
• Jeff Swinton, Conexion Corp.
• Whitey Thayer, FCC
• John Todd, NCS
• Rachel Torrence, Qwest
• Robert Vogel, PanAmSat Corp.
• Scott Wallhermfechtel, Metromedia
• Doug Williams, Comcast Cable

4
Focus Group Mission Statement

• Define reliability measurements (units) for
  commercial communications networks (i.e.,
  wireline and wireless transport networks,
  including satellite and cable) and for the
  Internet by March 22, 2003.
• Define reasonable, measurable customer-affecting
  outage reporting thresholds for commercial
  communications networks (i.e., wireline and
  wireless transport networks, including satellite
  and cable) and for the Internet by March 22,
  2003.
• Conduct voluntary outage reporting trial, collect
  data, analyze results, and report on the
  validity, usefulness, and timeliness of the
  process and information obtained, and make
  recommendations for improvement.
• Based on trial results (including information on
  services affected by an outage), evaluate and
  report on the reliability of public
  communications network services in the United
  States.
• Should the Commission initiate an inquiry or
  rulemaking with respect to any of the
  above-mentioned issues, the Focus Group will
  provide input to the NRIC, which may make formal
  recommendations as a part of such proceeding(s).
• Evaluate, and report on, the reliability of
  public telecommunications network services in the
  United States.

5
Focus Group Status

• Initial work on measurements and thresholds in
  technology specific teams
• Voluntary Outage Reporting Trial process and data
  criteria to be based on previous work of NRIC V
  (modifications/adaptations are being identified)
• Expected levels and conditions of participation
  in the Voluntary Outage Reporting Trial are being
  assessed

6
Measurements and Thresholds Teams
Team Leader
Internet Ross Callon (data) / Dean Henderson (voice)
Wireless Dean Henderson
Cable Wayne Hall
Satellite Bob Vogel
Wireline Wayne Chiles / PJ Aduskevicz
7
NRIC V Process
8
NRIC V Data Criteria
9
Reliability Reporting NRSC Reports

• The Network Reliability Steering Committee (NRSC)
  was established under the auspices of the
  Alliance for Telecommunications Industry
  Solutions (ATIS) to monitor network reliability
  utilizing major outage reports filed with the
  Federal Communications Commission (FCC) pursuant
  to Part 63.100 of the FCC Rules.
• The NRSCs mission is to analyze network outage
  data reported by companies, to identify trends,
  make recommendations aimed at improving network
  reliability, and make the results publicly
  available, and where applicable refer matters to
  other industry fora for further action.

10
Reliability Reporting NRSC 2001 Annual
ReportAnnual Control Chart for Outage Frequency
11
Reliability Reporting NRSC 2001 Annual
ReportAnnual Aggregated Outage Index Control
Chart
12
Reliability Reporting NRSC 2001 Annual
ReportNumber Of Outages By Failure Category
13
Reliability Reporting NRSC 2001 Annual
ReportAnnual Frequency Control Chart for
Procedural Error Outages
14
Reliability Reporting NRSC 2001 Annual
ReportAnnual Aggregated Outage Index Control
Chart for Procedural Error Outages
15
Reliability Reporting NRSC 2001 Annual Report

• For outages reported in 2001
• Local Switch outages had their lowest annual
  frequency and aggregated outage index to date.
• The annual aggregated outage index of Procedural
  Errors was the highest to date.
• The number of outages was lower than in any year
  to date. Nonetheless, the aggregated outage
  reached its second highest value to date.
• The average outage index per outage was the
  highest to date.

16
Reliability Reporting NRSC 2001 Annual Report

• Significant trends noted over the course of the
  nine-year data history include
• Local switch outage annual frequency and
  aggregated outage index are decreasing at the
  rate of 6 and 13 per year respectively.
• Central Office (CO) Power outage frequency is
  increasing at a rate of 12 per year.
• The frequency of Facility outages has decreased
  in the last two years, and the Facility
  aggregated outage index is decreasing at a rate
  of 6 per year.
• The frequency of outages with a Procedural Error
  as a root cause is increasing at a rate of 6 per
  year.
• The frequency of Common Channel Signaling (CCS)
  outages has increased in the last two years.

17
NRSC Timing Outages Task GroupImpact of Timing
Outages
9.4 of all Outages were from Timing Outages
33 of all CCS7 Outages were Timing Outages
18
NRSC Timing Outages Task GroupThree New Best
Practices

• Network Operators and Service Providers should
  insure that engineering, design, and installation
  processes address how new network elements are
  integrated into the office synchronization plan.
• Network Operators and Service Providers should
  develop management and records keeping tools that
  accurately track the diversity of internal wiring
  for office synchronization, including timing
  leads and power.
• Network Operators and Service Providers should
  conduct periodic verification of the office
  synchronization plan and the diversity of timing
  links, power feeds and alarms.

19
NRSC Timing Outages Task Group Office
Inspections and New Procedures

• Upgrade all BITS clocks to models capable of full
  A/B Power redundancy
• Verify that BITS is on fully protected power
  (UPS) with generator, and fed separately (A/B)
• If D4 channel banks are used for transporting
  common channel signaling, there are special
  timing considerations
• Redundant SS7 links should be timed from
  redundant timing sources (e.g., from different
  BITS timing output cards).
• Typically, all D4 Shelves (e.g., six) can be
  daisy chained with same BITS clock lead. As
  such, the redundant SS7 Links should terminate
  on Bays or Shelves with different timing sources
• Periodic tests for BITS switchover should be
  executed where applicable
• Power (A/B)
• Input (redundant Clock cards)
• Output (redundant Timing Output cards)
• Alarms (e.g., power, input, output, fuse)
• A one-time physical audit of timing redundancy,
  with special attention to SS7 link diversity
  should be conducted
• Any outages, which are determined to have the
  BITS clock as a contributing cause whether
  supplier/service provider/other attributable,
  should be shared with the BITS clock supplier to
  assist that supplier in improving the quality of
  their product

20
Reliability Reporting NRSC 2Q02 ReportFCC
Reportable Service Outages(by number of events)
21
Reliability Reporting NRSC 2Q02 ReportFCC
Reportable Service Outages(by outage index)
22
Reliability Reporting NRSC 2Q02
ReportIncidents by Failure Category(Common
Channel Signaling)
23
Reliability Reporting NRSC 2Q02
ReportIncidents by Failure Category(CO Power)
24
Reliability Reporting NRSC 2Q02
ReportProcedural Error Attributed Outages(by
number of events)
25
Reliability Reporting NRSC 2Q02 Report

• Based upon analysis of all outages reported from
  1Q93 through 2Q02, the NRSC notes that
• There is an increasing trend in the number of CO
  Power and CCS outages.
• There is an increasing trend in the frequency and
  aggregated outage index of Procedural Errors as
  the root cause of outages.
• There is a decreasing trend in the number of
  Local Switch outages.

26
Reliability Reporting NRSC Reports

• The NRSC urges all service providers and
  equipment vendors to review all best practices
  for application in their operations.
• These Best Practices may be found at
  http//www.nric.org/

27
(No Transcript)