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

 

Mg   (SIP)

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between  MGCF
and  I-CSCF / S-CSCF

see it   here

specified from  Rel-5  in
TS 23.228, clause 4.4 

This reference point allows the MGCF to forward incoming session signalling (from the circuit switched network) to the CSCF for the purpose of interworking with circuit switched networks.


Mi   (SIP)

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between  S-CSCF
and  BGCF

see it   here

specified from  Rel-5  in
TS 23.228, clause 4.4 

This reference point allows the Serving CSCF to forward the session signalling to the Breakout Gateway Control Function for the purpose of interworking to the circuit switched networks.


Mj   (SIP)

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between  BGCF
and  MGCF

see it   here

specified from  Rel-5  in
TS 23.228, clause 4.4 

This reference point allows the Breakout Gateway Control Function to exchange session signalling message with the Media Gateway Control Function for the purpose of interworking to the circuit switched networks, or for transit scenarios.


Mk   (SIP)

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between  BGCF / IBCF
and  BGCF

see it   here

specified from  Rel-5  in
TS 23.228, clause 4.4 

This reference point allows the Breakout Gateway Control Function/IBCF to forward the session signalling to another Breakout Gateway Control Function.


Ml

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between  E-CSCF
and  LRF

see it   here

specified from  Rel-7  in
TS 23.167, clause 5.2
clause 7.6
TS 23.271, clause 7.6.3 

This reference point allows the E-CSCF to request the LRF to validate the location information received from the UE, to determine or query the LRF for routing information to emergency centres. Location information may be received from LRF and/or reference key to allow the PSAP to retrieve location at a later stage.


Mm   (SIP)

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between  CSCF / IBCF
and  Multimedia IP networks

see it   here

specified from  Rel-5  in
TS 23.228, clause 4.4 

This is an IP interface between CSCF/IBCF and IP networks. This interface is used, for example, to receive a session request from another SIP server or terminal.


Mn

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between  MGCF
and  IMS-MGW

see it   here

specified from  Rel-5  in
TS 29.163, clause 9
TS 29.332 

The MGCF interacts with the IM-MGW across the Mn reference point for controlling the functions of the IM-MGW, which are used to provide the connection between media streams of an IP based transport network and bearer channels from a CS network.


Mp   (H.248)

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between  MRFC
and  MRFP

see it   here

specified from  Rel-5  in
TS 23.228, clause 4.7
TS 23.333
TS 29.333 

This reference point allows an MRFC to control media stream resources provided by an MRF.


Mr   (SIP)

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between  S-CSCF
and  MRFC

see it   here

specified from  Rel-5  in
TS 23.228, clause 4.7
TS 23.218, clause 6.2.5
clause 8.2.1 

The interface is used where it is wished to use the services of the S-CSCF to route to the MRF. The interface is also used to support the establishment of a media control channel with the MRF, or between the MRF and the MRB.


Mr'   (SIP)

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between  AS
and  MRFC

specified from  Rel-9  in
TS 23.228, clause 4.7
TS 23.218, clause 8.2.3
clause 8.2.4 

This reference point allows interaction between an Application Server and an MRFC for session control without passing through an S-CSCF.


Mx   (SIP)

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between  CSCF / BGCF
and  IBCF

see it   here

specified from  Rel-6  in
TS 23.228, clause 4.4 

This reference point allows the communication and forwarding of signalling messages between a CSCF/BGCF and an IBCF, e.g. during session establishment.


Mw   (SIP)

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between  CSCF
and  CSCF

see it   here

specified from  Rel-5  in
TS 23.228, clause 4.4 

The Mw reference point allows the communication and forwarding of signalling messaging between CSCFs, e.g. during registration and session control.


Mz

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between  BM-SC
and  BM-SC

specified from  Rel-7  in
TS 23.246, clause 4.3
TS 29.061, clause 19 

This reference point is the roaming variant of the Gmb reference point and is used to exchange signalling between a BM-SC in the VPLMN and a BM-SC in the HPLMN.



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