CONTENTS

1 General
1.1 Scope
1.2 References
2 The E-model, a computational model for use in transmission planning
2.1 Introduction
2.2 Source code
3 The structure and basic algorithms of the E-model
3.1 Calculation of the transmission rating factor, R
3.2 Basic signal-to-noise ratio, Ro
3.3 Simultaneous impairment factor, Is
3.4 Delay impairment factor, Id
3.5 Equipment impairment factor, Ie
3.6 Expectation factor, A
3.7 Default values
Annex A Examples of conditions where caution must be exercised when using the E‑model
Annex B Quality measures derived from the transmission rating factor R
Annex C Source code
Appendix I Bibliography