<?xml version="1.0" encoding="UTF-8"?><toc><section id="sec_foreword"><title>Foreword</title></section><section id="sec_intro"><title>Introduction</title></section><section id="sec_1"><label>1</label><title>Scope</title></section><section id="sec_2"><label>2</label><title>Conformance</title></section><section id="sec_3"><label>3</label><title>Normative references</title></section><section id="sec_4"><label>4</label><title>Terms and definitions</title></section><section id="sec_5"><label>5</label><title>Requirements</title><section id="sec_5.1"><label>5.1</label><title>General</title></section><section id="sec_5.2"><label>5.2</label><title>Fibre optic based systems</title><section id="sec_5.2.1"><label>5.2.1</label><title>Cables and cable assemblies</title></section><section id="sec_5.2.2"><label>5.2.2</label><title>Connectors</title></section><section id="sec_5.2.3"><label>5.2.3</label><title>Network units</title></section><section id="sec_5.2.4"><label>5.2.4</label><title>Network termination</title></section></section><section id="sec_5.3"><label>5.3</label><title>Twisted pair based systems</title><section id="sec_5.3.1"><label>5.3.1</label><title>Cables and cable assemblies</title></section><section id="sec_5.3.2"><label>5.3.2</label><title>Connectors</title></section><section id="sec_5.3.3"><label>5.3.3</label><title>Network units</title></section><section id="sec_5.3.4"><label>5.3.4</label><title>Network termination</title></section></section><section id="sec_5.4"><label>5.4</label><title>Module</title><section id="sec_5.4.1"><label>5.4.1</label><title>General</title></section><section id="sec_5.4.2"><label>5.4.2</label><title>Address plugs</title></section><section id="sec_5.4.3"><label>5.4.3</label><title>I/O modules</title></section></section><section id="sec_5.5"><label>5.5</label><title>Power supplies</title></section></section><section id="sec_A"><label>Annex A</label><title>Reference colours (informative)</title></section><section id="sec_B"><label>Annex B</label><title>Design specification for fibre optic hybrid connectors (normative)</title><section id="sec_B.1"><label>B.1</label><title>Fibre optic hybrid cable connector</title><section id="sec_B.1.1"><label>B.1.1</label><title>General</title></section><section id="sec_B.1.2"><label>B.1.2</label><title>Male fibre optic cable connector</title></section><section id="sec_B.1.3"><label>B.1.3</label><title>Female fibre optic cable connector</title></section></section><section id="sec_B.2"><label>B.2</label><title>Fibre optic hybrid fixed connector</title><section id="sec_B.2.1"><label>B.2.1</label><title>General</title></section><section id="sec_B.2.2"><label>B.2.2</label><title>Male fibre optic fixed connector</title></section><section id="sec_B.2.3"><label>B.2.3</label><title>Female fibre optic fixed connector</title></section></section></section><section id="sec_C"><label>Annex C</label><title>Design specification for twisted pair connectors (normative)</title><section id="sec_C.1"><label>C.1</label><title>Male twisted pair cable connector</title></section><section id="sec_C.2"><label>C.2</label><title>Female twisted pair fixed connector</title></section></section></toc>