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)
                  7.2.1     Mobile Switching Centre (MSC)
                  7.2.2     Visitor Location Register (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     Gateway Mobile Location Centre (GMLC)
        7.9     GPRS Service Switching Function (gprsSSF)
       7.10     GSM Service Control Function (gsmSCF)
       7.11     GSM Service Switching Function (gsmSSF)
       7.12     GSM Specialised Resource Function (gsmSRF)
       7.13     Gateway Location Register (GLR)
       7.14     Intermediate GPRS Serving Node (IM-GSN)
       7.15     Intermediate Mobile-services Switching Centre (IM-MSC)
 8     Interfaces
        8.1     C-Interface (Gateway Mobile Switching Centre (GMSC) – Home Location Register (HLR))
        8.2     D Interface (Visitor Location Register (VLR) – Home Location Register (HLR))
        8.3     E Interface (Mobile Switching Centre (MSC) – Mobile Switching Centre (MSC))
        8.4     F Interface (Mobile Switching Centre (MSC) – 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) – Public Network)
        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)) 26
       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) – Public 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     Mobile Switching Centre (MSC) – gsmSCF Interface
       8.37     PSTN Interface (Mobile Switching Centre (MSC)/Visitor Location Register (VLR) – Public Switching 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     29-series, Signalling protocols (NSS)
       10.8     31-series, UIM User Identity Module
       10.9     32-series, Operation and Maintenance
      10.10     33-series, Security aspects
      10.11     35-series, Algorithm specifications