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