Recommendation ITU-T K.137 (01/2022) Electromagnetic compatibility requirements and measurement methods for wireline telecommunication network equipment Summary History FOREWORD Table of Contents 1 Scope 2 References 3 Definitions 3.1 Terms defined elsewhere 3.2 Terms defined in this Recommendation 4 Abbreviations and acronyms 5 Conventions 6 Wireline telecommunication network equipment description 7 Test methods and limits 7.1 Emission 7.1.1 General emission requirements 7.1.2 Emission for equipment with a special port 7.1.2.1 HVDC port (see Annex H) 7.1.2.2 Power over Ethernet port 7.1.3 Harmonic 7.1.4 Flicker 7.2 Immunity 7.2.1 General 8 Test conditions 8.1 Operational conditions 8.2 Test configuration 8.3 Test conditions for equipment with a special port 8.4 Test conditions for equipment with a specific communication function 9 Performance assessment 9.1 General 10 Performance criteria 10.1 General performance criteria 10.1.1 Performance criterion A (continuous phenomena) 10.1.2 Performance criterion B (transient phenomena) 10.1.3 Performance criterion C 10.2 Specific performance criterion 11 Report Annex A Emission test level Annex B Immunity test level Annex C Equipment within the scope this Recommendation C.1 Access equipment C.2 IP equipment: router and switching C.3 Optical transmission network equipment C.4 Data centre and cloud computing equipment C.5 Switching equipment Annex D Test guide for access equipment D.1 Introduction D.2 Operational conditions D.3 Test configurations D.4 Performance criteria D.4.1 xDSL and G.fast interface D.4.1.1 Performance criterion A (continuous phenomena) D.4.1.2 Performance criterion B (transient phenomena) D.4.1.3 Performance criterion C (interruptions) D.4.2 POTS interface D.4.2.1 Performance criterion A (continuous phenomena) D.4.2.2 Performance criterion B (transient phenomena) D.4.2.3 Performance criterion C (interruptions) D.4.3 Digital signal interface D.4.3.1 Performance criterion A (continuous phenomena) D.4.3.2 Performance criterion B (transient phenomena) D.4.3.3 Performance criterion C (interruptions) Annex E Test guide for IP equipment: router and switching E.1 Introduction E.2 Operational conditions E.3 Test configurations E.4 Performance criteria E.4.1 Ethernet and packet-data interfaces E.4.1.1 Performance criterion A (continuous phenomena) E.4.1.2 Performance criterion B (transient phenomena) E.4.1.3 Performance criterion C (interruptions) Annex F Test guide for optical transmission network equipment F.1 Introduction F.2 Operational conditions F.3 Test configurations F.4 Performance criteria F.4.1 SDH and plesiochronous digital hierarchy interfaces F.4.1.1 Performance criterion A (continuous phenomena) F.4.1.2 Performance criterion B (transient phenomena) F.4.1.3 Performance criterion C (interruptions) F.4.2 Maintenance and alarm interfaces F.4.2.1 Performance criterion A (continuous phenomena) F.4.2.2 Performance criterion B (transient phenomena) F.4.2.3 Performance criterion C (interruptions) F.4.3 Synchronization interfaces F.4.3.1 Performance criterion A (continuous phenomena) F.4.3.2 Performance criterion B (transient phenomena) F.4.3.3 Performance criterion C (interruptions) F.4.4 Ethernet and packet-data interfaces F.4.4.1 Performance criterion A (continuous phenomena) F.4.4.2 Performance criterion B (transient phenomena) F.4.4.3 Performance criterion C (interruptions) Annex G Test guide for data centre and cloud computing network equipment G.1 Introduction G.2 Operational conditions G.3 Test configuration G.4 Performance criteria G.4.1 Serial advanced technology attachment (SATA)/serial attached SCSI (SAS)/small computer system interface (SCSI), PCI-e, IB interface G.4.1.1 Performance criterion A (continuous phenomena) G.4.1.2 Performance criterion B (transient phenomena) G.4.1.3 Performance criterion C (interruptions) G.4.2 Service and maintenance interfaces Annex H Test guide for switching equipment H.1 Test configuration H.2 Operational conditions H.3 Specific immunity performance criteria H.3.1 General H.3.2 Digital port performance criteria H.3.2.1 Performance criterion A (continuous phenomena) H.3.2.2 Performance criterion B (transient phenomena) H.3.2.3 Performance criterion C (interruptions) H.3.3 Analogue port performance criteria H.3.3.1 Performance criterion A (continuous phenomena) H.3.3.2 Performance criterion B (transient phenomena) H.3.3.3 Performance criterion C (interruptions) Annex I Test guide for PoE port I.1 Introduction I.2 Operational conditions I.3 Test configurations I.4 Test methods I.4.1 Emission test method I.4.2 Immunity test method I.5 Performance criteria I.5.1 Performance criterion A (continuous phenomena) I.5.2 Performance criterion B (transient phenomena) I.5.3 Performance criterion C (interruptions) A.1.1 Bibliography <\pre>