tech-invite   World Map
3GPP     Specs     Glossaries     Architecture     IMS     UICC       IETF     RFCs     Groups     SIP     ABNFs       Search     Home

Features       Entities       Reference Points       UICC Files       Identifiers

3GPP Glossaries:  Interfaces / Reference Points

   #      A      B      C      D      E      F      G      H      I      J      K      L      M      N      O      P      Q      R      S      T      U      V      W      X      Y      Z  
Here        Top        Up        Prev        Next

 

|    |  I1  |  I2  |  I3  |  I4  |  I5  |  I6  |  Ici  |  Iq  |  ISC  |  Iub  |  IuCS  |  Iuh  |  IuPS  |  Iur  |  Iur-g  |  IWF‑1  |  Ix  |  Izi  |

 

Up       Top

between  MSC
and  GCR

specified from  Rel-3
Source:   TS 23.002, clause 6a.1.1 

The GCR is the management data base for the voice group or broadcast calls in the area controlled by the associated MSC(s). Whenever the MSC needs data related to a requested voice group or broadcast call it interrogates the GCR to obtain the respective voice group or broadcast call attributes.

The protocol used to transfer the data over this interface is not standardized.


I1

Up       Top

between  ICS UE
and  SCC AS

see it   here

specified from  Rel-9  in
TS 23.292, clause 5.4.1
TS 24.294 

The I1 reference point is used between the UE and the SCC AS for service control signalling over CS access. The I1 protocol includes the procedures for establishing, maintaining, and clearing the I1 sessions between the ICS UE and the SCC AS. The I1 protocol is a message based point-to-point protocol. The I1 protocol messages are wrapped in a point-to-point transport layer connection protocol (e.g. USSD) and are exchanged between the ICS UE and the SCC AS.


I2

Up       Top

between  MSC-S
and  CSCF

see it   here

specified from  Rel-8  in
TS 23.292, clause 5.4.2 

The I2 reference point is used to route service control signalling between the MSC Server enhanced for ICS and the home IMS. The Mw reference point together with ICS specific extensions shall be used over the I2 reference point.


I3

Up       Top

between  MSC-S
and  TAS

see it   here

specified from  Rel-8  in
TS 23.292, clause 5.4.4 

The I3 reference point shall be used between the MSC Server enhanced for ICS and the TAS to interwork CS signalling (e.g. as described in TS 24.010 for systems based on TS 24.008) and communication service setting procedures (as defined in TS 24.173).


I4

Up       Top

between  E-CSCF
and  EATF

specified from  Rel-9  in
TS 23.167, clause 5.2
TS 23.237, clause 6c 

This reference point is used to provide services for emergency sessions.


I5

Up       Top

between  I-CSCF
and  EATF

specified from  Rel-9  in
TS 23.167, clause 5.2
TS 23.237, clause 6c 

This reference point is used to provide services for emergency sessions.


I6

Up       Top

between  MSC-S
and  E-CSCF 

see it   here

specified from  Rel-14  in
TS 23.292, clause 5.4.5 

The I6 reference point shall be used to route emergency service control signalling between the MSC Server enhanced for ICS and the E-CSCF. The Mw reference point together with ICS specific extensions shall be used over the I6 reference point.


Ici

Up       Top

between  IBCF
and  IBCF

specified from  Rel-8  in
TS 29.165 

This reference point allows two IBCFs to communicate with each other in order to provide the communication and forwarding of signalling messaging between IM CN subsystem networks.


Iq

Up       Top

between  P-CSCF
and  IMS-AGW

specified from  Rel-7
Source:   TS 23.002, clause 6a.7.23 

This reference point conveys the necessary information that is needed to allocate and release transport addresses.

Details are described in TS 23.228, Annex G


ISC   (SIP)

Up       Top

between  S-CSCF
and  AS

specified from  Rel-5
Source:   TS 23.002, clause 6a.7.8a 

The ISC (IMS Service Control) interface between Serving CSCF and the Application Servers (i.e., SIP Application Server, OSA Service Capability Server, or CAMEL IM-SSF) is used to provide services for the IMS.


Iub

Up       Top

between  RNC
and  Node B

specified from  Rel-3
Source:   TS 23.002, clause 6.3.2 

This interface is used to support the services offered to the UMTS users and subscribers. It also allows control of the radio equipment and radio frequency allocation in the Node B.

This interface is specified in the TS 25.43x-series.


Up       Top

between  MSC
and  RNC / BSC

specified from  Rel-3
Source:   TS 23.002, clause 6.2.1.2 

This interface is used to carry information concerning:
  • RNS management (from Rel-3, for IuCS between MSC and RNC)
  • BSS management (from Rel-5, for IuCS between MSC and BSC)
  • call handling
  • mobility management.
The Iu_CS interface is defined in the TS 25.41x-series.


Iuh

Up       Top

between  HNB
and  HNB-GW

specified from  Rel-9
Source:   TS 23.002, clause 6.3.5 

This interface is specified in the TS 25.467, TS 25.468 and TS 25.469.


Up       Top

between  SGSN
and  RNC / BSC

specified from  Rel-3
Source:   TS 23.002, clause 6.2.2.2 

This interface is used to carry information concerning:
  • RNS management (from Rel-3, for IuPS between SGSN and RNC)
  • BSS management (from Rel-5, for IuPS between SGSN and BSC)
  • packet data transmission;
  • mobility management
The Iu_PS interface is defined in the TS 25.41x-series.


Iur

Up       Top

between  RNC
and  RNC

specified from  Rel-3
Source:   TS 23.002, clause 6.3.3 

This interface is defined in the TS 25.42x series.


Up       Top

between  BSS
and  RNS

specified from  Rel-5
in  TS 43.130 

The Iur-g interface is the logical interface between two BSSs in Iu mode or between an RNS and a BSS in Iu mode or between a BSS in A/Gb mode and a UTRA-NTDD RNS.


Up       Top

between  MCPTT server
and  interworking function to legacy systems

see it   here

specified from  Rel-14  in
TS 23.379, clause 7.5.2.11 

The IWF-1 reference point is not specified yet.


Ix

Up       Top

between  IBCF
and  TrGW

specified from  Rel-9  in
TS 29.162, clause 10
TS 29.238 

The Ix reference point allows the IBCF to control the TrGW.


Izi

Up       Top

between  TrGW
and  TrGW

specified from  Rel-8  in
TS 29.165 

This reference point allows two TrGWs to forward media streams between IM CN subsystem networks.



Up       Top