Network Testing and Maintenance Level 2

Description: The Network Testing and Maintenance Level II course fine-tunes the tests and procedures that help to ensure a well-run transport network including test equipment and its applications, testing and maintenance, troubleshooting voice and data services, troubleshooting MPEG video streams, troubleshooting switched digital video, and monitoring video over IP. The student will learn how to recognize video artifacts and their sources and the steps to responding to optical outages.

Prerequisite:

  • SCTE·ISBE Network Testing and Maintenance Level 1

Target Audience:

  • Maintenance Technicians
  • Outside Plant Personnel

Included in the Course:

  • In-depth interactive content modules
  • CORTEX™ mobile app to access modules in the field 
  • Apply module knowledge with real life experiences in a simulated environment 
    • 2 NetworkSims™ included
  • Module assessments
  • Course final exam
  • SCTE·ISBE course completion certificate
  • 3 recertification units (RUs) towards SCTE·ISBE certification renewal

Requirements for Successful Course Completion:

  • Module quizzes 80% or higher
  • Course final test 80% or higher

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

Format:

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 1 to 2 hours per week over 12 weeks 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.

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: Troubleshooting Voice and Data Services
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

  • 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

  • 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

  • Demonstrate working knowledge of the theory and operation of the various types of test equipment, as well as their applications.
  • Test equipment categories covered:
    • Baseband equipment covering domains of bit, waveform, signal, protocol, algorithm, and quality (of service and overall experience)
    • RF equipment covering domains of modulation and up-conversion and their counterparts at radio frequencies from 5 to 5700 MHz
      • Cable and wireless signals included
      • Photonic equipment covering optical signals, both baseband and modulated that are transported over optical fiber

Module 04: Testing and Maintenance

  • Demonstrate working knowledge of the equipment and methods used to test broadband networks and services over them, including:
    • Digital video and audio
    • Digital telephony
    • High speed data services for homes and businesses
  • Demonstrate an understanding of measurement techniques and troubleshooting procedures, and how these techniques can be used to correct impairments.

Module 05: Troubleshooting Voice and Data Services

  • Learners will be able to explain problems associated with the downstream QAM signals.
  • Learners will be able to characterize the upstream transmission environment.
  • Learners will examine various DOCSIS upstream and downstream corrective techniques.
  • Learners will discuss the possible back office problems that cause failures in voice and data services.

Module 06: Troubleshooting MPEG Video Streams

  • Learners will explain the basics of troubleshooting video in cable networks.
  • Learners will be able to memorize the video terms used during troubleshooting.
  • Learners will identify common video related issues that degrade video quality.
  • Learners will define how streams are monitored on the cable network.
  • Learners will be able to examine the technique used for offline video analysis.

Module 07: Troubleshooting SDV

  • Learners will be able to state examples of switched digital video (SDV) failures.
  • Learners will be able to identify areas to troubleshooting SDV failures.
  • Learners will be able to predict SDV test equipment, monitoring and test point locations.
  • Learners will be able to explain SDV messaging, QAM utilization and TSID tracking.

Module 08: Monitoring Video over IP

  • Learners will be able to describe common video network impairments found in cable networks.
  • Learners will be able to explain the MPEG flow behavior such as under run, over run and jitter.
  • Learners will be able to state the measurements such as Media Delivery Index used to monitor or troubleshoot video

Module 09: Video Artifacts and Sources

  • 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

  • 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)

Sign In