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Question 16/15

Question 16/15 - Outside plant and related indoor installation
(Continuation of Question 16/15, 18/15 and part of 7/15)
Motivation
Progress on multimedia technologies has led to the active development of many kinds of broadband services such as data and video communication over access networks. In order to provide these services in a timely way, optical fibre access networks must be implemented, economically and effectively.
Considering the final target of bringing the fibre to each costumer living unit (FTTH), there could be evolutionary stages where the fibre can be brought in first stage to a street cabinet (FTTCab) or to the building basement (FTTB), re-using, in both cases the existing copper network to provide XDSL service.
The design of the access network can take into account mainly two different technologies, Point to point (PtP), or Point to Multipoint (PON – Passive Optical Network), or a mix of the two.
The passive optical network (PON) topology is used in many countries for FTTx, Therefore, suitable PON configurations must be considered, taking into account network installation, maintenance, operation and administration for each stage (initial stage, growth stage, maturity stage and final stage).
The evolution towards WDM PON technology must also be taken into account in the planning of PON infrastructure, in order to allow non-disruptive transition.
Moreover, it is important to consider suitable optical access network planning for urban areas with concentrated optical fibre demand, as well as for rural areas, which disperse the optical fibre demand across a wide area.
Regulatory scenarios should be also taken into account for the design of fibre access networks.
One important set of issues to be considered under study are related to the network infrastructure used to reach the customer, as the choice of kind of infrastructure, cables, outside plant components, is stricty related to the topology chosen, as well as the installation condition (presence of infrastructures or need to construct new ones).  For this purpose, new cable constructions, passive elements and techniques for outside plant construction and operation will be required.
Moreover, cable installation in existing buildings without specific available infrastructure for these new elements will be a challenge and technical solutions for wiring customer premises with the minimum disturbance for the customer  must be identified.
The following major Recommendations, in force at the time of approval of this Question, fall under its responsibility: L.1, L.2, L.3, L.4, L.5, L.6, L.7, L.8, L.9, L.10, L.11, L.13, L.14, L.15, L.16, L.17, L.18, L.19, L.20, L.21, L.22, L.23, L.24, L.26, L.27, L.32, L.33, L.34, L.35, L.38, L.39, L.42, L.43, L.44, L.45, L.46, L.47, L.48, L.49, L.50, L.51, L.52, L.56, L.57, L.58, L.59, L.60, L.61, L.62, L.63, L.70, L.71, L.72, L.73, L.74, L.75, L.76, L.77, L.78, L.79, L.82, L.83, L.84, L.86, L.87, L.88, L.89 and L.90.
Question
Study items to be considered include, but are not limited to:
  • What are the suitable passive optical network (PON) configurations for initial stage, growth stage, maturity stage and final stage?
  • What are the suitable optical access network for urban areas and rural areas taking into account the optical fibre demand and the expanse of area?
  • What are the key considerations for indoor and outdoor network design taking into account planning and growth?
  • What technical aspects to be considered for fibre deployment are affected by regulatory issues?
  • What are the suitable characteristics of optical access networks for supporting the evolution of PON technologies?
  • What are the suitable methods to enter the user premises and for installing optical fibre cables and other network elements in common parts of the buildings?
  • What are the features needed for BDP (Building Distribution Point)?
  • What are the key accessories and their features for the cabling in the building?
  • What are the desirable optical fibre cable construction types for a riser cable application?
  • What are the desirable optical fibre cable construction types for an indoor cabling application?
  • What are the desirable hybrid/composite cable construction types for FTTA (Fibre To The Antenna)
  • What are the mechanical and environmental characteristics of the optical infrastructure for the FTTH networks, including:
    • Optical Distribution Frames
    • Outdoor closures and cabinets
    • Indoor and Outdoor distribution terminals
    • Customer terminals and pre-terminated drop cables
    • Indoor cabling solutions
    • Enclosures and joints related to optical and copper networks ?
  • What methods can be envisaged for storing, protecting and thermal managing of active electronics in outside plant locations covering energy efficiency requirements?
  • What are the most efficient and reliable methods to terminate fibre cables by means of  field mountable connectors?
  • What are the issues encountered when splicing bend insensitive fibres to single mode fibres?
  • What are the suitable strategies for constructing new infrastructure and expansion of existing infrastructure, taking into account integrity of installation, maintenance and growth issues?
  • What are the suitable techniques to connect the premises inside the building?
  • What are the suitable techniques to construct and manage the fibre network inside the apartment?
  • What are the suitable techniques for managing the building network?
  • Do existing ITU-T Recommendations and /or handbooks provide a suitable description of the construction and protection of building network?
  • What are the suitable techniques for urban areas and rural areas taking into account the optical fibre demand and the expanse of area?
  • What are the regulatory issues to be considered for fibre deployment?
Tasks
Tasks include, but are not limited to, developing Recommendations or Technical Documents on:
  • Aspects related to planning, installation, activation and acceptance of optical passive access networks.
  • Technical aspects concerning regulatory aspects related to optical access networks.
  • Installation of cables and infrastructure inside building.
  • Solutions for connection between external and internal network.
  • Characteristics and installation methods of BDP (building distribution point).
  • Characteristics and installation methods of accessories for cabling of the building.
  • Characteristics of riser and indoor cables.
  • Test methods for the vertical cabling of the building.
  • Characteristics and installation methods of cabinets for FTTx.
  • Regulatory aspects related to optical access networks.
  • Customer end distribution boxes and terminals, taking also into account the aspect of multi operator access.
  • Outdoor optical cross connect cabinets.
  • Pre-terminated fibre drop cables & hardened connectors.
  • Splicing of bend insensitive fibres with single mode fibres and splice measurement method solutions for apartment cabling.
  • Revising existing Recommendations if needed.
  • Enhance Recommendations L.13, L.15, L.19, L.35, L.44
Relationships
Recommendations:
  • ITU-T L-series and G.65x series
Questions:
  • Q1/15, Q2/15, Q5/15, Q7/15, Q16/15, Q17/15 and ITU-R related Questions
Standardization bodies, forums and consortia:
  • IEC SC86A (Fibres and Cables)
  • IEC SC86B (Passive Components)
  • IEC SC86C (Fibre Optic Systems and Active Devices)
  • FTTH Council
  • Broadband Forum