Consult these articles from SearchEnterpriseVoice.com and elsewhere to read more about pending VOIP regulations:
The regulatory status of VoIP carried over private networks is even less well-defined than public VoIP. If you have a question about laws in a specific country, it is best to consult that country's telco regulatory body. One good place to start is the International Telecommunication Union's VOIP regulatory news page.
This was first published in April 2005