DIN CLC/TR 50510:2013-11

The abbreviation FTTx refers to grids using fibres in the terminal area, meaning beyond the last exchange Central Office. "x" thereby denotes different penetration levels, for instance: - FTTC = Fibre to the Curb, meaning to the street, the last cabinet in the street; - FTTB = Fibre to the Building, meaning to the building, normally into the basement; - FTTH = Fibre to the Home, meaning into the residential area. Most FTTx networks are designed without any active equipment in the external network and are therefore classified as passive optical networks (PONs). The only active equipment is at the central office and the customer premises. FTTH-PON networks can be designed around different architectures. The purpose of this Technical Report is to be a first guideline for those considering installation of a high bandwidth (high bit-rate) FTTx-network. After studying the document operators, communities, energy companies, installers and others will understand the necessary steps to take to plan and install FTTx-networks with high quality and cost effectiveness, and to secure a uniform structure and a high quality level on such networks. The main part of this Technical Report describes the FTTx-networks, but clause 2 also contains more general information to give an understanding as to how these networks fit into the planning of other network infrastructures. It also provides recommendations and gives basic requirements to be fulfilled by an optical fibre installation in an FTTx-network to satisfy present and future requirements on capacity, transmission distance and network quality. As a target, the minimum capacity is set to 1 Gbit/s (1 000 Mbit/s) up to 10 km distance. The recommendations are written for a general audience, but in particular for people involved in private and public enterprises, people responsible for broadband decisions, planning, training and installations. The Technical Report is divided into eight clauses: - Clause 1 introduces the term "broadband" and deals with the background. - Clause 2 introduces the telecommunications infrastructures and provides an overview of the basic structure for FTTx networks. - Clause 3 describes system implementations for FTTx including requirements on products and installation techniques. - Clause 4 provides guidance on how to create a network and gives an overview of applicable network topologies. - Clause 5 provides basic information in relation to various installation practises and the planning relevant to those practises. - Clause 6 addresses installation of the FTTx networks. - Clause 7 addresses the testing, documentation and maintenance of the installed network. - Clause 8 addresses the overall quality. A number of annexes are included to give deeper knowledge in certain areas. They are broad examples and can be used to give a better view on the principles for installation of FTTx-networks with cables, microduct optical fibre cables, microducts and blown fibre units. The responsible committee is Subcommittee UK 412.6 "Lichtwellenleiter und Lichtwellenleiterkabel" ("Fibres and cables") of the DKE (German Commission for Electrical, Electronic and Information Technologies) at DIN and VDE.