Network Testing and Maintenance Level 2

Description:

The Network Testing and Maintenance Level 2 course fine-tunes the tests and procedures that help to ensure a well-run transport network including optical test equipment and its applications; testing and maintenance; troubleshooting voice and data services; troubleshooting MPEG video streams, troubleshooting switched digital video (SDV), and monitoring video over IP (VoIP). The learner will recognize video artifacts and their sources and the steps to respond to optical outages.

Recommended Prerequisite:

SCTE•ISBE Network Testing and Maintenance Level 1

Target Audience:

  • Broadband Premises Installers / Technicians
  • Technical Operations
  • Hybrid Fiber Coax (HFC) or Access Network Technicians
  • Outside Plant (OSP) Technicians
  • Maintenance Technician, System Technician or equivalent
  • Headend or Hub Engineers

Included in the Course:

  • Engaging and Interactive LightningMod™ to prepare learner for training 
  • In-depth interactive eBook modules 
  • CORTEX® mobile app to access content modules in the field 
  • Apply module knowledge with real life experiences in a simulated environment 
  • 3 NetworkSims Included
  • Module assessments
  • Course final exam
  • Fun VirtuGame™ to improve absorption and retention of competencies 
  • SCTE•ISBE course completion certificate
  • 3 recertification units (RUs) towards SCTE•ISBE certification renewal

Requirements for Successful Course Completion:

  • Module quizzes 70% or higher
  • Course final test 70% or higher

You may take the course final test up to 3 times.

Format and Schedule:

Self-paced interactive Online Course: Learners start the SCTE•ISBE VirtuLearn™ course at any time, study at their own pace, and have access to dynamic online content after they register. On average, learners will spend approximately 17 hours completing course activities. SCTE•ISBE provides access to the course for 3 years from date of purchase.

System Requirements: A high speed Internet (HSI) connection, Internet browser with HTML 5 support. For tablet or smartphone access, HTML 5 may be used for online eBook content.

Instructor-Led Onsite Boot Camp Course: The SCTE•ISBE VirtuLearn course may be delivered as an onsite boot camp over 5 days.

Course access information will be emailed when the course is purchased.

Course Modules:

Module 01: Optical Testing
Module 02: OTDR Operation
Module 03: Test Equipment and its Application
Module 04: Testing and Maintenance
Module 05: DOCSIS Troubleshooting
Module 06: Troubleshooting MPEG Video Streams
Module 07: Troubleshooting SDV
Module 08: Monitoring Video over IP
Module 09: Video Artifacts and Sources
Module 10: Responding to Optical Outages

Course Objectives:

Module 01: Optical Testing
Upon completion of this module the participant will be able to:

  • Understand the fundamentals of optical link testing.
  • Describe the specifications and applications of various types of optical test equipment.
  • Describe the use of an optical loss test set (OLTS) to conduct optical power measurements.
  • Describe the use of an optical time-domain reflectometer (OTDR) to conduct optical distance and loss measurements.
  • Describe the use of an optical spectrum analyzer to view the optical spectrum.
  • Describe the use of an optical modulation index (OMI) meter to access optical health.
  • Understand the tests that should be run in a troubleshooting situation.


Troubleshoot optical signal quality

Module 02: OTDR Operation
Upon completion of this module the participant will be able to:

  • Describe an OTDR and what OTDRs are used for in the cable industry.
  • Understand the components and how the optical time-domain reflectometer (OTDR) works.
  • Describe how to operate an optical time-domain reflectometer (OTDR) to conduct optical distance and loss measurements.
  • State how the various optical time-domain reflectometer (OTDR) settings are used to measure optical link health.
  • Understand the various optical time-domain reflectometer (OTDR) traces and trace components.
  • State how to troubleshoot using an OTDR to measure optical link health.
  • Discuss some of the OTDR anomalies such ghosting and gainers.

Module 03: Test Equipment and its Applications
Upon completion of this module the participant will be able to:

  • Describe baseband equipment which covers the domains of bit, waveform, signal, protocol, algorithm, and quality of service and overall experience
  • Explain RF equipment covering domains of modulation and up-conversion and their counterparts at radio frequencies from 5 to 5700 MH including both cable and wireless RF signals
  • Describe Photonic equipment covering optical signals, both baseband and modulated that are transported over optical fiber
  • Note that test equipment will incorporate multiple signal domains, such as baseband and RF, or baseband and optical. As an example, consider an optical BERT.

Module 04: Testing and Maintenance
Upon completion of this module the participant will be able to:

  • Understand why and how cable networks must be proactively monitored and maintained.
  • Understand common network impairments and how they manifest in tests and measurements, including linear, non-linear plant distortions, ingress of external radio signals and transient noise.
  • Develop competency in basic performance metrics and their measurement using a variety of test equipment.
  • Understand modern proactive network maintenance practices using modems and STBs as test probes throughout the network.
  • Explain using SNMP to poll devices for signal quality and other performance metrics.
  • Using pre-equalization coefficients and full RF band spectrum capture to identify and locate linear and non-linear plant distortions.

Module 05: DOCSIS Troubleshooting
Upon completion of this module the participant will be able to:

  • Explain problems associated with the downstream QAM signals.
  • Characterize the upstream transmission environment.
  • Examine various DOCSIS upstream and downstream corrective techniques.
  • Discuss the possible back office problems that cause failures in voice and data services.

Module 06: Troubleshooting MPEG Video Streams
Upon completion of this module the participant will be able to:

  • Explain the basics of troubleshooting video in cable networks.
  • Memorize the video terms used during troubleshooting.
  • Identify common video related issues that degrade video quality.
  • Define how streams are monitored on the cable network.
  • Examine the technique used for offline video analysis.


Measure and test MPEG health (jitter, MDI, under run, over run, latency)

Module 07: Troubleshooting SDV
Upon completion of this module the participant will be able to:

  • State examples of switched digital video (SDV) failures.
  • Identify areas to troubleshooting SDV failures.
  • Predict SDV test equipment, monitoring and test point locations.
  • Explain SDV messaging, QAM utilization and TSID tracking.

Module 08: Monitoring Video over IP
Upon completion of this module the participant will be able to:

  • Describe common video network impairments found in cable networks.
  • Explain the MPEG flow behavior such as under run, over run and jitter.
  • State the measurements such as Media Delivery Index used to monitor or troubleshoot video

Module 09: Video Artifacts and Sources
Upon completion of this module the participant will be able to:

  • Explore an end to end overview of the video network.
  • Understand the different types of compression artifacts that effect video such as low bit rate, blockiness, blurriness and choppiness.
  • Understand the different types of encoding artifacts that effect video such as quantization, motion vector, VBV starvation, motion artifacts and choppiness.
  • Understand the different types of grooming artifacts that effect video such as interlacing, flagging, chroma bleed and Gibbs effect.
  • Understand the different types of network artifacts that effect video such as frozen frame, streaks, checkerboard and localized block errors.


Fix network video artifacts

Module 10: Responding to Optical Outages
Upon completion of this module the participant will be able to:

  • Overview of assurance and how it fits in the CableLabs Cable Information Architecture (CIA) Model
  • Overview of fault management
    • Fault surveillance
    • Fault correlation and root cause analysis
    • Fault correction and restoration by fix agents
    • Fault reporting and analytics (Event Summary or EVS)
  • Incident management as a process
    • Definition of an incident (e.g., outage)
    • Classification of severity/alarm levels
      • Critical, major, minor, informational
      • Examples for Voice, Video, Data, Business
      •  Impact on customer service
    • Notification levels and criteria
    • Ticketing and transfer of incident command
    • Roles and responsibilities; handoffs
    • Metrics: Time To (or TT) acknowledge (TTA), ticket(TTT), notify(TTN), restore service(TTRS), repair(TTR), verify(TTV)
    • Checklists and documentation
  • Case examples (flow charts)

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