XO generated $18 million from its business VoIP services during the quarter. That represents 131% increase over same period last year. At the end of 2Q07, XO served more than 12,000 business VoIP customers. Business VoIP now accounts for 5.1% of XO's overall revenue compared to 2.2% for the same period last year.

Carrier VoIP services, which include VoIP origination and VoIP termination, grew 4% to $7.5 million compared to $7.2 million in the same period last year.