Level 2 specification

NR/L2/TEL/30003

Immunity Test Requirements For Lineside Communications Systems (Formerly NR/SP/TEL/30003)

Clause map — what each clause deals with

1	Purpose	Why lineside copper-connected equipment is immunity tested — traction interference
2	Scope	Applies to equipment needing product approval that connects to lineside copper
3	Acronyms and Definitions	Acronyms and definitions (EUT, AE, CDN, LCL)
4	Introduction	How the document is structured
6.1	Summary of test against EUT type	Which tests apply to which equipment type
6.2	EUT Types	The EUT types — analogue voice, analogue data, POTS handset, digital data
7	Performance Criteria	Performance criteria A, B and C
8.2	Analogue voice EUT- test method and pass criteria	Audio-frequency immunity — analogue voice method
8.3	Analogue data and digital data - test method and pass criteria	Audio-frequency immunity — data methods
8.4	POTS handset- test method and pass criteria	Audio-frequency immunity — POTS handset
9	Power frequency conducted immunity – normal;	Power-frequency conducted immunity — normal conditions
10	Power frequency conducted immunity – fault	Power-frequency conducted immunity — fault conditions
11	Longitudinal Conversion Loss (LCL)	Longitudinal conversion loss test
Appendix A	Line simulator	Line simulator
Appendix B	Calibration and coupling-decoupling network	Calibration and the coupling-decoupling network
Appendix D	Guidance on reducing risk with COTS equipment	Reducing risk when using COTS equipment