This India Times story popped up in an RSS feed, and it's... interesting. It basically says that BPOs and KPOs (business and knowledge process outsourcing; Indians love acronyms) must undertake not to use unlicensed overseas VoIP providers - this will in fact become illegal.
The outsourcers go through some thirty million minutes per month in India. That's a good chunk, and the government is miffed that it's missing out on its twelve per cent service tax and six per cent "revenue sharing" (!). On top of that, there are very likely provider licensing and other compliance fees required to feed the bureaucrats in India.
Wonder how much that'll put up the outsourced call centres' costs? Enough to make overseas organisations think twice before shifting there?