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����