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))
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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 the 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 Reference point AS-MRFC (Cr reference point)
8.33 IuCS interface (Mobile switching centre (MSC) – RNS or BSS)
8.34 IuPS interface (Serving GPRS support node (SGSN) – RNS or BSS))
8.35 A interface (Mobile switching centre (MSC) – Base station system
(BSS))
8.36 Gb interface (Serving GPRS support node (SGSN) – Base station
system (BSS))
8.37 Reference point GMLC – external LCS client (Le reference
point)
8.38 Interface between the MSC and its associated GCR (I-interface)
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 Reference point GGSN – BM-SC (Gmb reference point)
8.54 Reference points for 3GPP generic user profile (GUP)
8.55 Reference points for policy and charging control
8.56 Reference point IP-SM-GW – HSS (J reference point)
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