GSM INTERFACE
Interface means in which medium the information flow from one node to other node : like how the information flow from mobile to BTS and which type of interface is used?
From
|
To
|
Interface
|
Technology used
|
MS
|
BTS
|
Air / Um / Radio
interface
|
FDMA + TDMA Hybrid
|
BTS
|
BSC
|
Abis Interface
|
LAPD Technology
|
BSC
|
MSC
|
A Interface
|
SS7 Technology
|
MSC
|
VLR
|
B Interface
|
MAP/ TCAP ( SS7
Layers)
|
MSC
|
HLR
|
C Interface
|
MAP/ TCAP ( SS7
Layers)
|
VLR
|
HLR
|
D Interface
|
MAP/ TCAP ( SS7
Layers)
|
MSC 1
|
MSC 2
|
E Interface
|
MAP/ TCAP + TUP +
ISUP
|
MSC
|
EIR
|
F Interface
|
MAP/ TCAP ( SS7
Layers)
|
VLR 1
|
VLR 2
|
G Interface
|
MAP/ TCAP ( SS7
Layers)
|
HLR
|
AuC
|
H Interface
|
INTERNAL TECHNOLOGY
|
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