A-interface
AAA-*
Abis
B-interface
Bx
(Bcp /
Bi /
Bl /
Bm /
Bmb /
Bmn /
Bo /
Bp /
Bpr /
Bs /
Bsm /
Bt /
Bw /
Bx)
C-interface
CAP
Cr
CSC‑*
Cx
D-interface
Dh
Dx
Dz
E-interface
E1
E-UTRAN Uu (LTE Uu)
F-interface
F1
G-interface
Ga
Gb
Gc
GC1
Gd
Gdd
Ge
→
Gf
Ghv
Gi
Gla
Glb
Glc
Gld
Gle
Glf
Glg
Glh
Gli
Glj
Glk
Gm
Gmb
Gmc
Gn
Gp
Gr
Gs
Gw
Gwn
Gx
Gxa
Gxb
Gxb*
Gxc
Gxx
Gy
Gya
Gyn
Gz
Gza
Gzn
H-interface
HTTP‑*
Hv
I-interface
I1
ICS UE
←→
SCC AS
I2
I3
I4
I5
I6
Ici
Iq
ISC
Iub
IuBc
IuCS
Iuh
Iupc
IuPS
Iur
Iur-g
IWF-*
Ix
Izi
J-interface
→
K-interface
→
L-interface
→
La
Lb
Lc
Le
GMLC
←→
External LCS Client
Lg
Lgd
Lh
Lid
Lp
Lpp
Lr
Ls
LTE‑Uu
M1
M2
M3
Ma
Mb
IMS
←→
IPv6 networks
MB2
Mc
MCData‑*
MCPTT‑*
MCVideo‑*
MCX‑*
Mg
Mi
Mj
Mk
Ml
Mm
Mn
Mp
Mr
Mr'
Mx
Mw
Mz
N1
N2
N3
N4
N5
N6
N7
N8
N9
N10
N11
N12
N13
N14
N15
N16
N16a
N17
N18
N19
N20
N21
N22
N23
N24
N26
N27
N28
N29
N29i
N30
N31
N32
N33
N35
N36
N37
N50
N51i
N52
N55
N56
N57
N58
Nb
Nc
NG
NL1
NL2
NL3
NL5
NL6
NL7
Np
Nq
Nq'
Ns
Nt
Nu
Nwt
Nwu
PC1
ProSe AS
←→
ProSe Application in UE
PC2
ProSe AS
←→
ProSe Function
PC3
PC4a
PC4b
SLP (OMA Secure User Plane Location Platform)
←→
ProSe Function
PC5
ProSe-enabled UE
←→
ProSe-enabled UE
PC6/PC7
HPLMN ProSe Function
←→
HPLMN/VPLMN ProSe Function
Pc
Pen
Presence Network Agent
←→
Presence Server
Pep
Presence User Agent
←→
Presentity Presence Proxy
Pet
Watcher Applications
←→
Presence List Server
Peu
Presence User Agent
←→
Presence Server
Pex
Presence External Agent
←→
Presence Server
Pg
Presence Network Agent
←→
SGSN
Ph
HSS
/
HLR
←→
Presence Network Agent
Pi
S-CSCF
←→
Presence Network Agent
Pk
Presence Network Agent
←→
GGSN
Pl
Presence Network Agent
←→
GMLC
Pp
Presence Network Agent
←→
PDG
Pr
Pw
Watcher Applications
←→
Presentity Presence Proxy
Pwp
Presentity Presence Proxy
←→
Presence Server
Px
Presentity Presence Proxy
←→
HSS
Rc (charging)
Rc (IMS)
Re
Rf
Rg
Ro
Rp
Rr
ABMF
←→
Recharging Server
Rx
REST‑Rx
S1-MME
S1-U
S2a
S2b
S2c
S3
S4
S5
S6a
S6b
S6c
S6d
S6m
S6n
S6t
S7a
S7d
S8
S9
S9a
S10
S11
S11-U
S12
S13
S13'
S14
S15
S16
S101
S102
S103
S121
SBc
Sd
SGd
SGi
SGi-mb
SGmb
SGs
Sh
Si
SEAL‑*
SIP‑*
SLg
SLh
SLm
SLs
Sm
Sn
Sp
St
STa
Sv
SWa
SWd
SWm
SWn
SWu
SWx
Sxa
S-GW-C
←→
S-GW-U
Sxb
P-GW-C
←→
P-GW-U
Sxc
Sy
T4
T6a
T6ai
T6b
T6bi
T7
T8
T9a
T9b
Tsms
Tsp
Ta
Tn
Ua
Ub
Ud
→ see it
here (PCRF acting as AFE)
Um
Up
Upa
Ut
→
Uu
→
V1
V2X Application in UE
←→
V2X AS
V2
V2X AS
←→
V2X Control Function
V3
UE
←→
V2X Control Function
V4
V2X Control Function
←→
HSS
V5
V2X Application in UE
←→
V2X Application in UE
V6
V2X Control Function in HPLMN
←→
V2X Control Function in VPLMN
VAL‑*
X2
xMB
Content Provider
←→
BM-SC
Xn
Xw
Y1
Y2
Y4
Y5
Yt
Yw
Za
Zb
Zh
Zh'
Zn
Zpn