Thank you DracoFelis
Yes I have a linksys ATA. I manage to select various providers using 1, 2 etc in front of the number. So, this is exactly what i was asking for.
Some times it shows caller ID, but not always and never in mobile. Directly from my ATA it shows number only in mobile.
Quality is about 20% worst than using the provider directly in ATA. Is that normal?
Thank you
sn