telecom hardware Nokia Flexi BTS and abbreviation glossary

Dear folk

Sorry it might not be the right place to post this question but I couldn’t find a proper subforum to ask telecom hardware Nokia Flexi BTS

I am after a comprehensive glossary that explain abbreviations like :

ABIS, FIE1, FIYB, FSME, FSMD,etc

I already know what each hardware is used for

The one that I found is very limited in the link below :

Thanks