What are different GSM interfaces ?
The GSM interfaces according to the ITU standards are
1) Abis Interface : The interface between the BTS and Base Station
2) C Interface : Interface between MSC and HLR
3) D Interface : Interface between VLR and HLR
4) E interface : Interface between MSC
5) F Interface : Interface between MSC and EIR
6) G Interface : Interface between VLR
7) B Interface : Interface betwwn MSC and its asssciacted VLR