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     Lightning damage      
 6     Requirements              
        6.1     Classification of ports     
        6.2     Resistibility        
        6.3     Safety
        6.4     Earthing             
        6.5     Risk assessment               
        6.6     Installation of overvoltage protection         
        6.7     Wiring installation            
        6.8     Special requirements       
        6.9     Use of wireless and optical fibre   
Annex A – Principles of surge protection    
        A.1     Surge coupling into external telecommunication lines             
        A.2     Surge coupling into internal cabling             
        A.3     Impact of actual installations      
        A.4     Separate earth electrodes              
        A.5     Philosophy of protection               
Annex B – Installation practices which may result in damage    
Annex C – Coordination    
        C.1     Telecommunication SPD coordination       
        C.2     Mains SPD coordination
        C.3     Internal port coordination             
Annex D – Risk assessment    
        D.1     Explanation of terms     
        D.2     Risk management           
Appendix I – Risk assessment example    
        I.1                   General 
        I.2                   Building characteristics     
        I.3                   Characteristics of the services          
        I.4                   Characteristics of the internal systems           
        I.5                   Zones definition in the structure      
        I.6                   Expected dangerous events to the structure  
        I.7                   Risk assessment for the unprotected structure             
        I.8                   Selected protection measures           
        I.9                   Risk assessment related to the protected structure      
       I.10     SPDs  
Appendix II – Assessment of protection needs    
       II.1     Single port equipment     
       II.2     Earthed equipment          
       II.3     Non-earthed equipment 
       II.4     Level of protection provided by an MSPD 
       II.5     Consideration of loop areas          
Bibliography