Table of 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     The gateway MSC (GMSC)        
        7.2     The mobile-services switching centre (MSC)       
        7.3     Visitor location register (VLR) 
        7.4     Home subscriber server (HSS)  
        7.5     Equipment identity register (EIR)            
        7.6     SMS gateway MSC (SMS-GMSC)            
        7.7     SMS interworking MSC (SMS-IWMSC) 
        7.8     Subscription locator function (SLF)        
        7.9     Gateway GPRS support node (GGSN)    
       7.10     Serving GPRS support node (SGSN)      
       7.11     Circuit switched – Media gateway function (CS-MGW)  
       7.12     Entities of the EPC PS domain 
       7.13     Border gateway (BG)  
       7.14     The group call register (GCR) entity      
       7.15     The location services (LCS) entities      
       7.16     IP multimedia (IM) core network (CN) subsystem entities             
       7.17     Signalling gateway function (SGW)       
       7.18     Global text telephony specific entities  
       7.19     Security gateway (SEG)            
       7.20     Application function (AF)        
       7.21     GPRS service switching function (gprsSSF)        
       7.22     GSM service control function (gsmSCF)              
       7.23     GSM service switching function (gsmSSF)          
       7.24     GSM specialized resource function (gsmSRF)    
       7.25     Cell broadcast centre (CBC)     
       7.26     Number portability database (NPDB)    
       7.27     Mobile number portability/Signalling relay function (MNP-SRF) 
       7.28     Gateway location register (GLR)            
       7.29     Intermediate GPRS serving node (IM-GSN)        
       7.30     Intermediate mobile-service switching centre (IM-MSC)
       7.31     Multimedia broadcast multicast service (MBMS) specific entities              
       7.32     Generic user profile (GUP) server          
       7.33     Policy and charging rules function (PCRF)          
       7.34     Policy and charging enforcement function (PCEF)           
       7.35     Support of short message service over generic 3GPP Internet protocol access (SMSIP) specific entities    
       7.36     Subscription profile repository (SPR)   
       7.37     Service data flow based credit control function 
       7.38     Bearer binding and event reporting function (BBERF)     
 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     Reference point GGSN – packet data networks (Gi reference point)            
        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))    
       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 (Ge reference point)             
       8.28     Interface between the CBC and RNS (Iu_BC interface)   
       8.29     Interface between the CBC and MME (SBc interface)      
       8.30     Interface between the CBC and BSC      
       8.31     H interface (home location register (HLR) – authentication centre (AuC))
       8.32     IuCS interface (mobile switching centre (MSC) – RNS or BSS)     
       8.33     IuPS interface (serving GPRS support node (SGSN) – RNS or BSS))           
       8.34     A interface (mobile switching centre (MSC) – base station system (BSS)) 
       8.35     Gb interface (serving GPRS support node (SGSN) – base station system (BSS))      
       8.36     Reference point GMLC – external LCS client (Le reference point)             
       8.37     Interface between the MSC and its associated GCR (I interface)  
       8.38     LCS interfaces not using MAP 
       8.39     LCS interfaces using MAP        
       8.40     Mc reference point (mobile switching centre server (MSC Server) –circuit switched media gateway (CS-MGW))    
       8.41     Mobile switching centre (MSC) – gsmSCF interface         
       8.42     Nb reference point (circuit switched media gateway (CS-MGW) – circuit switched media gateway (CS-MGW))    
       8.43     Nc reference point (mobile switching centre server (MSC server) –gateway mobile switching centre server (GMSC server))    
       8.44     Reference point fixed networks – MSC 
       8.45     IM subsystem reference points
       8.46     Reference point CSCF – Multimedia IP networks (Mm reference point)    
       8.47     Reference point PDG – Packet data networks (Wi reference point)             
       8.48     Reference point WAG – WLAN access network (Wn reference point)       
       8.49     Interface between SGSN and SMS-GMSC or SMS-IWMSC (Gd Interface)
       8.50     Interfaces internal to, or related to the evolved packet core (EPC)              
       8.51     Number portability specific interfaces  
       8.52     Reference points for 3GPP/WLAN interworking
       8.53     MBMS specific reference points for GPRS          
       8.54     MBMS specific reference points for EPS             
       8.55     Reference points for 3GPP generic user profile (GUP)     
       8.56     Reference points for policy and charging control             
       8.57     Reference point IP-SM-GW – HSS (J reference point)     
       8.58     Reference point application front ends – UDR (Ud reference point)           
 9     Technical specifications structure      
10     Technical specifications      
       10.1     21-series, Requirements            
       10.2     22-series, Service aspects         
       10.3     23-series, Technical realization              
       10.4     24-series, Signalling protocols – user equipment to network         
       10.5     26-series, CODECs     
       10.6     27-series, Data             
       10.7     28-series, Signalling protocols – (RSS-CN) and OAM&P and charging      
       10.8     29-series, Signalling protocols – intra-fixed-network      
       10.9     31-series, Subscriber identity module (SIM/USIM), IC cards. Test specifications   
      10.10     32-series, OAM&P and charging           
      10.11     33-series, Security aspects      
      10.12     35-series, Security algorithms