Across the UK, legacy communication networks are being retired, affecting how door entry systems operate in housing and residential buildings. Both the phase-out of 2G mobile networks and the copper PSTN/ISDN switch-off mean that outdated systems may soon lose connectivity, creating risks to resident safety, security, and building compliance.
          
        
        
        
          
        
       
        
      
      
       
      
      
    
      
 
         
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