International Telecommunication Union ITUT Study Group 15 Peter

Responsibility and Mandate ITU-T o Focal point in ITU-T for studies on optical and

Network Access ITU-T SG 15 Work Program o Question 1/15 (WP 5/15) • Access

ITU-T Optical systems for access networks o Work started in 1996 o B-PON related

ITU-T DSL systems for access networks o Work started in 1996 o Phone line

ITU-T DSL systems for access networks (cont’d) o VDSL related Recommendations • G. 993

ITU-T Lead SG on Access Network Transport o Mandate • Define, maintain overall framework

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International Telecommunication Union ITU-T Study Group 15 Peter Wery Chairman ITU-T Study Group 15 Nortel Networks ITU-T Workshop All Star Network Access Geneva, 2 -4 June 2004 Page -

Responsibility and Mandate ITU-T o 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. o Lead Study Group on: • Access Network Transport (ANT) • Optical Technology 15. 06. 2021 dates 2

Network Access ITU-T SG 15 Work Program o Question 1/15 (WP 5/15) • Access Network Transport • Focus on Lead Study Group activity o Question 2/15 (WP 1/15) • Optical systems for access networks • Focus on B-PON; G-PON o Question 4/15 (WP 1/15) • Transceivers for customer access and in-premises phone line networking systems on metallic pairs • Focus on x. DSL 15. 06. 2021 dates 3

ITU-T Optical systems for access networks o Work started in 1996 o B-PON related Recommendations • G. 983 -series • 8 Recommendations (basic; mgmt. & ctrl. ; serv. cap. ) • 2 Recommendations consented April 2004 (mgmt. & ctrl. I/Fs) o 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) 15. 06. 2021 4

ITU-T DSL systems for access networks o Work started in 1996 o Phone line networking systems related Recommendations • G. 989 -series • 3 Recommendations (basic; payload format; isolation function) o HDSL & SHDSL related Recommendations • G. 991 -series • 2 Recommendations (transceivers) o ADSL related Recommendations • G. 992 -series • 5 Recommendations (ADSL splitter & splitterless; ADSL 2+) (cont’d) 15. 06. 2021 dates 5

ITU-T DSL systems for access networks (cont’d) o VDSL related Recommendations • G. 993 -series • 1 Recommendation (basic) • Revised version consented April 2004 (transceiver & line code) o 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 o 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. 15. 06. 2021 dates 6

ITU-T Lead SG on Access Network Transport o Mandate • Define, maintain overall framework (other SGs, SDOs, Forums/Consortia) • Own Questions • Coordinate, assign and prioritize work in other SGs • Consistent, complete, timely standards o 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/com 15/ant/index. html 15. 06. 2021 dates 7