Agenda

From the moment you pick up the handset of your fixed phone, tap the button of your mobile phone to answer a call, participate in a videoconference with colleagues located in a neighboring country or on another continent or just turn on your PC at home or office to connect to the Internet through your telecom service provider, you use, without paying particular attention to them, and probably without knowing it, a number of ICT standards developed by ITU-T Study Group 15.

ITU-T SG15 international standards (which are named ITU-T Recommendations) define component specifications, technologies and architectures of optical transport networks enabling global information exchange using fibre- or copper-based broadband access networks through which subscribers connect and interface with the outside world. Giving shape to this global communication infrastructure, standards developed by ITU-T SG15 are essential to meet ITU’s Strategic Plan for universal connectivity and sustainable digital transformation, accelerate broadband connectivity deployment and bridge the digital divide to provide access to the internet to the 2.7 billion unconnected people.

In this workshop, experts from SG15 will explain what standards are, how they are created and used and why are they important. Further the workshop will give an overview of the study group’s standardization work and provide insight into relevant standards for the fibre optic broadband network infrastructure and transport network and how the group collaborates with other standards bodies.

This workshop consists of three sessions:
- Session 1 covers “General aspects of standards and standardization work of ITU-T Study Group 15”
- Session 2 presents the “ITU-T Study Group 15 relevant standards for the fibre optic broadband network infrastructure ”
- Session 3 presents the “ITU-T Study Group 15 relevant standards for the optical transport network, architecture and synchronization aspects”

Nine individual presentations will be made from experts in international standardization and research fields. These presentations will consider the relevant work items from Question 2 “ Optical systems for fibre access networks”, Question 5 “Characteristics and test methods of optical fibres and cables, and installation guidance”, Question 6 “Characteristics of optical components, subsystems and systems for optical transport networks ”, Question 7 “Connectivity, operation and maintenance of optical physical infrastructures”, Question 12 “Transport network architectures” and Question 13 “Network synchronization and time distribution performance” of ITU-T SG15.

The ITU-T Study Group 15 workshop will be introduced by Mr Seizo Onoe - Director of the ITU Telecommunication Standardization Bureau – at the beginning of the session 1.

Agenda of session 3 - ITU-T Study Group 15 relevant standards for the optical transport network, architecture and synchronization aspects
Moderator: Mr Malcolm Betts - Chairman, Working Party 3 of ITU-T SG15 (ZTE)

Session 3 will address some aspects of the optical transport network including: The way that architecture of the optical transport network can be described using a common framework (provided in G.800 “Unified functional architecture of transport networks” and G.807 “Generic functional architecture of the optical media network”) that is independent of the actual transport technologies being deployed in the network. This is important since the actual technologies deployed are constantly evolving and the common framework allows the systems required to manage the transport network to be evolved, instead than being replaced, as new technologies are deployed. The use of SDN to manage transport networks will also be described: The physical layer components including optical fibres (e.g. G.652 that defines the most commonly used transmission fibre and optical subsystems (e.g. G.698.2 that specifies a 100Gb/s optical interface)) that support the full range of deployment scenarios for WDM (wave division multiplexed) systems from low cost solutions that are optimized for short reach (~100km) and relatively low capacity (e.g. ~ 25Gb/s per wavelength) to long haul (several thousand km) with capacities of several hundreds of Gbit/s per wavelength that use complex modulation techniques: The techniques that are used to provide accurate and reliable distribution of frequency and time information across the transport network using packet networks, the physical layer and integration with GNSS to meet the requirements of the applications (e.g. 5G). The requirements for both reliability and precision are constantly increasing. The requirements for time and frequency distribution use profiles of the Precision Time Protocol (PTP) developed by IEEE 1588. PTP is also used in industrial applications.

- Talk 1: Architecture aspects of Optical Transport Networks
Presenter: Ms Liping Chen - Associate Rapporteur, Question 14 of ITU-T SG15 (CICT)

- Talk 2: Optical transport networks: why they matter and the importance of standardized solutions
Presenter: Mr Fabio Cavaliere - Rapporteur, Question 6 of ITU-T SG15 (Ericsson)

- Talk 3: Network synchronization and time distribution
Presenter: Ms Silvana Rodrigues - Associate Rapporteur, Question 13 of ITU-T SG15 (Huawei)