CONTENTS

 1     Scope 
 2     References 
        2.1     Normative references         
        2.2     Informative references        
 3     Definitions  
 4     Abbreviations and acronyms        
 5     Introduction      
 6     Basic architecture for the UMTS IMT-2000 family member         
 7     Network entities  
        7.1     Gateway Mobile Switching Centre (GMSC)          
        7.2     Mobile Switching Centre and Visitor Location Register MSC/VLR (MSC/VLR)    
        7.3     Home Location Register (HLR)     
        7.4     Authentication Centre (AuC)          
        7.5     Equipment Identity Register (EIR)  
        7.6     Gateway GPRS Support Node (GGSN)    
        7.7     Serving GPRS Support Node (SGSN)      
        7.8     Circuit Switched – Media Gateway function (CS-MGW)   
        7.9     Signalling Gateway function (SGW)
       7.10     Gateway Mobile Location Centre (GMLC)           
       7.11     GPRS Service Switching Function (gprsSSF)        
       7.12     GSM Service Control Function (gsmSCF)
       7.13     GSM Service Switching Function (gsmSSF)          
       7.14     GSM Specialized Resource Function (gsmSRF)    
       7.15     Gateway Location Register (GLR)
       7.16     Intermediate GPRS Serving Node (IM-GSN)       
       7.17     Intermediate Mobile-service Switching Centre (IM-MSC) 
 8     Interfaces and reference points     
        8.1     C Interface (Gateway Mobile Switching Centre Server (GMSC Server) –Home Location Register (HLR))    
        8.2     D Interface (Visitor Location Register (VLR) – Home Location Register (HLR))    
        8.3     E Interface (Mobile Switching Centre Server (MSC Server) – Mobile Switching Centre Server (MSC Server))    
        8.4     F Interface (Mobile Switching Centre Server (MSC Server) – Equipment Identity Register (EIR))    
        8.5     G Interface (Visitor Location Register (VLR) – Visitor Location Register (VLR))    
        8.6     Gc Interface (Home Location Register (HLR) – Gateway GPRS Support Node (GGSN))    
        8.7     Gf Interface (Equipment Identity Register (EIR) – Serving GPRS Support Node (SGSN))    
        8.8     Gi Interface (Gateway GPRS Support Node (GGSN) – External Data Networks)  
        8.9     GLa Interface (Gateway Location Register (GLR) – Home Location Register (HLR))         
       8.10     GLb Interface (Gateway Location Register (GLR) – Visitor Location Register (VLR))    
       8.11     GLc Interface (Gateway Location Register (GLR) – Serving GPRS Support Node (SGSN))    
       8.12     GLd Interface (Gateway Location Register (GLR) – Intermediate Mobile-services Switching Centre (IM-MSC))    
       8.13     GLe Interface (Gateway Location Register (GLR) – Intermediate GPRS Serving Node (IM-GSN))    
       8.14     GLf Interface (Gateway Location Register (GLR) – Short Message Service-Gateway Mobile Switching Centre (SMS-GMSC))    
       8.15     GLg Interface (Intermediate Mobile-services Switching Centre (IM-MSC) – Short Message Service-Gateway Mobile Switching Centre (SMS-GMSC))    
       8.16     GLh Interface (Intermediate Mobile-services Switching Centre (IM-MSC) – Mobile Switching Centre (MSC))    
       8.17     GLi Interface (Intermediate Mobile-services Switching Centre (IM-MSC)– Gateway Mobile Location Centre (GMLC)) 34
       8.18     GLj Interface (Intermediate GPRS Serving Node (IM-GSN) – Gateway GPRS Support Node (GGSN))    
       8.19     GLk Interface (Intermediate GPRS Serving Node (IM-GSN) – Serving GPRS Support Node (SGSN))    
       8.20     Gn Interface (Gateway GPRS Support Node (GGSN) – Serving GPRS Support Node (SGSN))    
       8.21     Gp Interface (Serving GPRS Support Node (SGSN) – External Data Network)    
       8.22     Gr Interface (Home Location Register (HLR) – Serving GPRS Support Node (SGSN))    
       8.23     Gs Interface (Mobile Switching Centre (MSC)/Visitor Location Register (VLR) – Serving GPRS Support Node (SGSN))    
       8.24     gsmSCF – HLR Interface 
       8.25     gsmSCF – gsmSRF Interface        
       8.26     gsmSSF – gsmSCF Interface        
       8.27     gprsSSF – gsmSCF Interface       
       8.28     H Interface (Home Location Register (HLR) – Authentication Centre (AuC))        
       8.29     IuBC Interface (Core Network (CN) – Radio Network Controller (RNC))           
       8.30     IuCS Interface (Mobile Switching Centre (MSC) – Radio Network Controller (RNC))    
       8.31     IuPS Interface (Serving GPRS Support Node (SGSN) – Radio Network Controller (RNC))    
       8.32     Lc Interface (Gateway Mobile Location Centre (GMLC) – GSM Service Control Function (gsmSCF))    
       8.33     Le Interface (Gateway Mobile Location Centre (GMLC) – External LCS client)    
       8.34     Lg Interface (Mobile Switching Centre (MSC)/Visitor Location Register (VLR) – Mobile Location Centre (MLC))    
       8.35     Lh Interface (Home Location Register (HLR) – Gateway Mobile Location Centre (GMLC))    
       8.36     Mc Reference Point (Mobile Switching Centre Server (MSC Server) –Circuit Switched Media Gateway (CS-MGW))    
       8.37     Mobile Switching Centre (MSC) – gsmSCF interface        
       8.38     Nb Reference Point (Circuit Switched Media Gateway (CS-MGW) –Circuit Switched Media Gateway (CS-MGW))    
       8.39     Nc Reference Point (Mobile Switching Centre Server (MSC Server) –Gateway Mobile Switching Centre Server (GMSC Server))    
       8.40     PSTN Interface (Mobile Switching Centre (MSC)/Visitor Location Register (VLR) – Public Switched Telephone Network (PSTN))    
 9     Technical specifications structure  
10     Technical specifications   
       10.1     21-Series – Requirements specifications    
       10.2     22-Series – Service aspects          
       10.3     23-Series – Technical realization   
       10.4     24-Series – Signalling protocols (User Equipment-Core Network)
       10.5     26-Series – Codecs (speech, video, etc.)  
       10.6     27-Series – Data  
       10.7     28-Series – Signalling protocols (RSS-CN)          
       10.8     29-Series – Signalling protocols (NSS)     
       10.9     31-Series – UIM User Identity Module     
      10.10     32-Series – Operation and Maintenance  
      10.11     33-Series – Security aspects        
      10.12     35-Series – Algorithm specifications