Austria Visa - Inviting Sri Lankan Friend to Visit Austria

Hello,

My friend from Austria would like to invite our Sri Lankan friend to visit Austria and he is willing to sponsor his trip.

Anyone has experience or heard anything about acquiring a Visa to Austria or Schengen countries?

I tried to call Austrian Consulate in Sri Lanka with no luck. Also found some information that Austria Visa processing is held in New Delhi, India - this information couldn't confirm.

I would appreciate your help or advice.
Many Thanks!

But I think  Visas are available online.