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3GPP Glossaries:  Interfaces / Reference Points
for letter 'G' (2 of 4)

 

Ge

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between  gprsSSF
and  gsmSCF

specified from  Rel-3  in
TS 23.078, clause 6.1.2.2
TS 23.002, clause 6a.4.8 

This interface is used by the gsmSCF to control a GPRS session or individual PDP Context in a certain gprsSSF. GPRS dialogues between the gprsSSF and the gsmSCF on this interface are opened as a result of the gprsSSF sending a request for instructions to the gsmSCF. A GPRS dialogue is composed of a sequence of TC dialogues linked together by the same reference. The GPRS dialogue handler allows the TC dialogue handling.


Gf

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between  SGSN
and  EIR

see it   here

specified from  GSM Rel-97  in
TS 03.60, clause 5.6.2.4 

This interface is used when an SGSN wants to check an IMEI.


Ghv   (MAP)

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between  CSS
and  SGSN

specified from  Rel-11  in
TS 23.060, clause 5.6.3.10 

This reference point is used to transfer to the Gn/Gp SGSN the CSG subscription information stored in the VPLMN for roaming UEs.


Gi

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between  GGSN
and  PDN (external Packet Data Network)

specified from  GSM Rel-97  in
TS 09.61 

This is the reference point between the GGSN and a packet data network. It may be an operator external public or private packet data network or an intra operator packet data network, e.g. for provision of IMS services.


GLa   (MAP)

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between  HLR
and  GLR

see it   here

specified from  Rel-3  in
TS 23.119
TS 29.119
.120
TS 23.002, clause A.5.1 

In circuit switched domain, this interface is the same as that between the VLR and the HLR. The HLR regards the GLR as the VLR via this interface. On the other hand, in packet switched domain, this interface is the same as that between the SGSN and the HLR. The HLR regards the GLR as the SGSN via this interface.


GLb   (MAP)

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between  VLR
and  GLR

see it   here

specified from  Rel-3  in
TS 23.119
TS 29.119
.120
TS 23.002, clause A.5.2 

This interface is the same as those between the VLR and the HLR. The VLR regards the GLR as the HLR via this interface.


GLc   (MAP)

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between  SGSN
and  GLR

see it   here

specified from  Rel-3  in
TS 23.119
TS 29.119
.120
TS 23.002, clause A.5.3 

This interface is the same as those between the SGSN and the HLR. The SGSN regards the GLR as the HLR via this interface.


GLd

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between  GLR
and  IM_MSC

see it   here

specified from  Rel-3  in
TS 23.119
TS 29.119
.120
TS 23.002, clause A.5.4 

In the network with the GLR, when the IM_MSC receives a message, it interrogates the GLR for the routing information of the MSC. However, this interface is internal because GLR and IM-MSC are implemented in the same physical node and the protocol on this interface is not specified.


GLe   (MAP)

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between  GLR
and  IM_GSN

see it   here

specified from  Rel-3  in
TS 23.119
TS 29.119
.120
TS 23.002, clause A.5.5 

In the network with the GLR when the IM_GSN receiving a PDU notification from the GGSN, the IM_GSN relays the notification to the SGSN by interrogating via the interface the routing information to the GLR. The interrogation uses the same operation on the interface between the SGSN and the HLR.


GLf   (MAP)

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between  SMS-GMSC
and  GLR

see it   here

specified from  Rel-3  in
TS 23.119
TS 29.119
.120
TS 23.002, clause A.5.6 

This interface is used to forward mobile-terminated short messages in the network with the GLR in case of SMS transfer over GPRS. The SMS-GMSC regards the GLR as the SGSN via this interface.


GLg   (MAP)

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between  SMS-GMSC
and  IM_MSC

see it   here

specified from  Rel-3  in
TS 23.119
TS 29.119
.120
TS 23.002, clause A.5.7 

This interface is used to forward short messages in the network with the GLR in case of SMS transfer over non-GPRS. The SMS-GMSC regards the IM_MSC as the MSC via this interface.


GLh   (MAP)

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between  MSC
and  IM_MSC

see it   here

specified from  Rel-3  in
TS 23.119
TS 29.119
.120
TS 23.002, clause A.5.8 

This interface is used to forward short messages in the network with the GLR in case of SMS transfer over non-GPRS. Also this interface is used to exchange data needed by the MSC to perform subscriber authorization and allocate network resources.


GLi   (MAP)

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between  GMLC
and  IM_MSC

see it   here

specified from  Rel-3  in
TS 23.119
TS 29.119
.120
TS 23.002, clause A.5.9 

Also this interface is used to exchange data needed by the MSC to perform subscriber authorization and allocate network resources. The GMLC regards the IM_MSC as the MSC via this interface.


GLj

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between  GGSN
and  IM_GSN

see it   here

specified from  Rel-3  in
TS 23.119
TS 29.119
.120
TS 23.002, clause A.5.10 

In the network with the GLR when receiving a PDP PDU from the external network the GGSN sends a notification to the IM_GSN by the routing information from the HLR. The GGSN regards the IM_GSN as the SGSN via this interface.


GLk

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between  SGSN
and  IM_GSN

see it   here

specified from  Rel-3  in
TS 23.119
TS 29.119
.120
TS 23.002, clause A.5.11 

In the network with the GLR when receiving a PDP notification from the GGSN, the IM_GSN relays the notification to the SGSN by the routing information from the GLR. The SGSN regards the IM_GSN as the GGSN via this interface.



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