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islamhasabo
2012-04-16, 12:45 AM
hi all

The attached pdf is an introduction to GSM interfaces from ******** .
I think, it is a good one, as it shows the difference bet ******** defined Interface, Mobis, and the GSM defined Interface, A-bis, so
even if ******** has been replaced by NSN, you should be aware by a little from the history, to have the ability to think in the future.


Waiting for your thoughts........