Subscriber Access Ethernet Techniques

2 Day Course
Code PDN041

This course has been retired please see our Fixed Copper Access, Mobile Backhaul, FTTx & GPON or Carrier Ethernet training courses. 


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Architecture of Subscriber Access Loops (11 topics)

  • Characteristics of copper twisted Pairs
  • Electrical requirements for analogue voice
  • ISDN loop requirements
  • Frequency and distance trade-off
  • Impact of loading coils
  • Testing loops with TDR techniques
  • Noise and crosstalk
  • Impact of noise: Shannon's Limit
  • Optical loop technologies
  • Single Move vs Multimode
  • Passive optical vs Active Optical Technologies

Evolution of Ethernet for Subscriber Access (14 topics)

  • Evolution of Ethernet LANs
  • Layering and Addressing
  • IEEE Standardization Principles
  • 802.3 Standard structure
  • Impact of 802.1 for management, QoS and VLAN services
  • 802.3 Section 56 Ethernet for subscriber access networks
  • Point to Point (P2P) and Point to Multipoint (P2MP)
  • Physical Coding Sublayer (PCS)
  • Physical Medium Attachment (PMA)
  • Span and the signal-to-noise ratio (SNR) impact upon bit rates
  • Physical Layer signaling systems
  • Support over Copper and Fiber
  • Protocol implementation conformance statement (PICS)
  • Operations Administration and Management (OAM)

Optical EFM Physical Medium Dependent Systems (9 topics)

  • 100BASE-LX10 (Long Wavelength
  • 100BASE-BX10 (BiDirectional Long Wavelength)
  • 1000BASE-LX10 (Long Wavelength)
  • 1000BASE-BX10 (BiDirectional Long Wavelength)
  • 1000BASE-PX10 (long wavelength passive optical networks)
  • 1000BASE-PX20 (long wavelength passive optical networks)
  • Wavelength and spectral width measurements
  • Transmitter and receiver requirements
  • Performance aspects, Jitter and testing

Copper EFM Physical Coding (16 topics)

  • 10PASS-TS and 2BASE-TL
  • Physical Coding Sublayer (PCS)
  • 100 Mb/s burst data rate
  • Physical Medium Attachment (PMA)
  • Loss and Bit Error Ration Targets
  • Relation of 2BASE-TL and 10PASS-TS to other standards
  • I_O and I_R reference points
  • Physical Medium Entity (PME)
  • Impact of Ethernet Aggregation
  • Codeword Formats and bit ordering
  • Sync Insertion
  • Power Back-off
  • Constellation Encoding
  • Regional Considerations
  • VDSL Based Systems
  • SHDSL Based Systems

EFM and DSL Service Migration (22 topics)

  • Ethernet Final Mile and DSL Service Comparison
  • DSL G.922.1 Asymmetric digital subscriber line (ADSL)
  • ADSL2 G922.3 ADSL2 functional model
  • ADSL 2+ G.992.5
  • VDSL2 G.993.2
  • DSL Forum TR-101 Migration to Ethernet-Based DSL Aggregation
  • IP Address Allocation
  • PPPoE/PPPoA Advantages and disadvantages
  • DHCP
  • RFC1483
  • SNAP
  • OUI
  • Proxy Services
  • Multicasting at layer 2 and Layer 3
  • IGMP
  • Precedence and Quality of Service
  • Demonstrating the impact of Aggregation on IPTV quality and access bandwidth
  • Queuing and queue management
  • TR-126 Triple-play Services Quality of Experience (QoE) Requirements
  • Management and Configuration with TR-069
  • Auto-Configuration and Dynamic Service Provisioning
  • Software/Firmware Image Management


A basic knowledge of IP and telecommunications will be assumed

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