Motivation

The continuing customer demand for ever higher bit rate data services, high-speed Internet access and other innovative services, and the ongoing needs of network operators to fully exploit their installed base of copper cables, will require the development of new Recommendations and enhancements to existing Recommendations covering all aspects of Digital Subscriber Line and in-premises Networking Transceivers. These studies will include, but are not limited to, the transport of higher layer protocols, the management and test of the access systems, spectral management aspects and energy saving techniques.

The following major Recommendations, in force at the time of approval of this Question, fall under its responsibility: G.991.n series, G.992.n series, G.993.n series, G.994.1, G.995.1, G.996.1, G.997.1, G.998.n series, G.995x series.

Question

What enhancements are needed to the G.99x and G.995x series of Recommendations:

• in the light of design, network deployment experience, and evolving service requirements?
• to optimise the transport of IP-based services?

What new Recommendations are needed:

• for transceivers for customer access over metallic pairs?
• for transceivers for in-premises networking over metallic conductors such as phone-line, coaxial, data (e.g. CAT5) and power cables?
• to carry out line testing?
• to enable higher bit rates to be achieved by means of pair bonding?

What enhancements to existing Recommendations are required to provide energy savings directly or indirectly in Information and Communication Technologies (ICTs) or in other industries?

What enhancements to developing or new Recommendations are required to provide such energy savings?

Study items include, but are not limited to:

• Modulation and transport techniques, tools for spectrum management (including dynamic spectrum management), real noise environments, handshaking procedures, testing procedures, physical layer management procedures, energy saving techniques.
• These studies should take account of the different regulatory environments around the world.
• Transceiver to higher layer inter-connection techniques

These studies will include any specific requirements:

• to optimise the transport of IP-based services
• to optimise the transport of Ethernet based services
• to support the management of access and in-premises networking systems and equipment operating over metallic conductors

Tasks

Tasks include, but are not limited to:

Maintenance and enhancements of existing Recommendations and production of new Recommendations in the G.99x and G.995x series.

NOTE: An up-to-date status of work under this Question is contained in the SG15 Work Programme at http://www.itu.int/ITU-T/workprog

Relationships

Recommendations:

• G.991.n series, G.992.n series, G.993.n series, G.994.1, G.995.1, G.996.1, G.997.1, G.998.n series, G.995x series.

Questions:

• Q2/15, Q9/15, Q12/15, Q14/15

Study Groups:

• ITU-T SG2 on management aspects and NGNMFG
• ITU-T SG5 on EMC and various copper cable topics
• ITU-T SG9 on television and sound programme transport
• ITU-T SG16 on multimedia and FS-VDSL aspects

Standardisation bodies, forums and consortia:

• ATIS Committee NIPP and its subcommittee on Network Access Interfaces (NAI)
• ATIS Committee NIPP and its subcommittee on Telecom Energy Efficiency (TEE)
• CCSA on xDSL related topics
• CEPCA on power line communication
• Broadband Forum (ex DSL Forum) on Test methodology and performance
• ETSI EE on DSL energy efficiency
• ETSI TM6 on xDSL related topics
• ETSI PLT on power line communication
• HGI on residential gateway
• HomePlug on power line communication
• HomePNA on phone-line networking
• IEC CISPR I on EMC requirements
• IEEE on Ethernet and power line communication
• IETF on xDSL MIBs
• ISO/IEC JTC1/SC25 on interconnection of Information Technology equipment
• IP/MPLS Forum on ATM
• MoCA on multimedia over coax
• TIA TR-41 on Spectral management considerations
• TTA on xDSL related topics
• TTC on xDSL related topics
• TMForum on MTOP WS management solutions
• UPA on power line communication