ITU-T Study Group 15

1
ITU-T Study Group 15

• Peter Wery
• Chairman ITU-T Study Group 15
• Nortel Networks

2
Responsibility and Mandate

• Focal point in ITU-T for studies on optical and
  other transport networks, systems and equipment.
  This encompasses the development of transmission
  layer related standards for access, metropolitan
  and long haul sections of communication networks.
• Lead Study Group on
• Access Network Transport (ANT)
• Optical Technology

3
Network Access

• SG 15 Work Program
• Question 1/15 (WP 5/15)
• Access Network Transport
• Focus on Lead Study Group activity
• Question 2/15 (WP 1/15)
• Optical systems for access networks
• Focus on B-PON G-PON
• Question 4/15 (WP 1/15)
• Transceivers for customer access and in-premises
  phone line networking systems on metallic pairs
• Focus on xDSL

4
Optical systems for access networks

• Work started in 1996
• B-PON related Recommendations
• G.983-series
• 8 Recommendations (basic mgmt. ctrl. serv.
  cap.)
• 2 Recommendations consented April 2004 (mgmt.
  ctrl. I/Fs)
• G-PON related Recommendations
• G.984-series
• 3 Recommendations approved (basic phys. media
  dependent layer transmission convergence layer)
• 1 Recommendation consented April 2004 (mgmt.
  ctrl. I/Fs)

5
DSL systems for access networks

• Work started in 1996
• Phone line networking systems related
  Recommendations
• G.989-series
• 3 Recommendations (basic payload format
  isolation function)
• HDSL SHDSL related Recommendations
• G.991-series
• 2 Recommendations (transceivers)
• ADSL related Recommendations
• G.992-series
• 5 Recommendations (ADSL splitter splitterless
  ADSL 2 ADSL 2) (contd)

6
DSL systems for access networks (contd)

• VDSL related Recommendations
• G.993-series
• 1 Recommendation (basic)
• Revised version consented April 2004 (transceiver
  line code)
• Other DSL related Recommendations
• G.994-series Handshake procedures
• G.995-series Overview of DSL Recommendations
• G.996-series Test procedures
• G.997-series Physical layer management
• Future work
• IP and IP-based, Ethernet and other services over
  DSL
• Bonding multiple DSL
• Single ended line testing
• Management of DSL systems/equipment
• Enhancements to existing Recs.

7
Lead SG on Access Network Transport

• Mandate
• Define, maintain overall framework
• (other SGs, SDOs, Forums/Consortia)
• Own Questions
• Coordinate, assign and prioritize work in other
  SGs
• Consistent, complete, timely standards
• Implementation
• ANT Standardization Overview (who, what, when)
• ANT Standards Work Plan (holes, lack of progress,
  priorities)
• Provide value added
• http//www.itu.int/itudoc/itu-t/com15/ant/index.ht
  ml