Sunit Patel
Analyst · Philip Cusick with JP Morgan
Thank you, Jeff, and good morning, everyone. As Jeff just mentioned, we had a mix quarter with solid bottom-line performance, highlighted on Slide 23, by continued margin expansion, double-digit adjusted EBITDA growth and strong free cash flow generation offset by softness in North America enterprise revenue performance. Overall, total revenue grew 0.4% and CNS revenue grew 1.1%. Enterprise CNS revenue, excluding U.K. government, grew 3.7%. Within CNS, revenue from our large multinational enterprise customers increased 10%. Total wholesale CNS revenue declined 4.2%, primarily due to continued consolidation-driven disconnects.
I'll now shift to our regional results, which can be found on Slide 24. North America CNS revenue grew 1.4% year-over-year. Enterprise CNS revenue grew 3.1%, driven by solid performance from our largest customers, offset by continued pressure from the low end of our base. As Jeff explained, revenue performance at the high end of our customer base is performing well. The challenges we've seen this year are really from the lower end of the base. As you can see on Slide 25, our largest global accounts customers, who make up 17% of our North America Enterprise CNS revenue, grew 1.9% sequentially. In the next year, customers that spend more than $20,000 per month grew 1.2% sequentially. Customers who spend $2,000 -- between $2,000 and $20,000 per month declined 0.6% sequentially. Finally, our smallest customers, spending less than $2,000 per month and representing 5% of the North America enterprise base, declined 18% sequentially.
Moving to EMEA, CNS revenue declined 7.7% with enterprise CNS revenue, excluding U.K. Government, declining 3.7%. In the region, we've been successful with large multinational customers, but they usually order more complex services with longer installation intervals. Higher churn continues to be a challenge for the EMEA region, and we have implemented several improvement initiatives to improve churn. For the past couple of quarters, we've experienced weakness in conferencing, co-location and lower-speed services.
Going forward, we are transitioning the business to focus on higher-bandwidth On-Net services. Usage revenues also weakened in the third quarter, driven by some large IP customer re-rates. We expect sequential improvement in the fourth quarter. Overall in EMEA, we are encouraged as enterprise CNS sales bookings in EMEA are up about 40% year-to-date compared to 2015, and we expect improved revenue performance in the coming quarters.
In Latin America, we saw strong enterprise performance, driven in part by the Olympics. CNS enterprise revenue grew 16%, or 13% if you exclude the benefits from the Olympics, which was about $4 million in the third quarter. For the quarter, our overall sales bookings for the company were up both year-over-year and sequentially, and our sales funnel remains healthy. From a product group perspective, IP and data services grew 3%; transport and fiber declined 1%; voice services grew 0.4%; and co-location and data services revenue declined 0.2% year-over-year. From an individual product perspective, dark fiber grew 5%, CDN grew 15%, and managed security grew 16%.
Turning to Slide 26. Adjusted EBITDA was $716 million for the third quarter of 2016. This compares to $641 million in the third quarter of 2015. The double-digit percentage improvement in adjusted EBITDA was driven primarily by the improvement in network-access costs, along with tighter management of operating expenses. We also continued to expand adjusted EBITDA margin, which improved nicely to 35.2% in the third quarter 2016 compared to 31.5% in the third quarter 2015.
Year to date, capital expenditures were approximately 17% of total revenue. During the quarter, capital spending was higher than previous quarters, as we invested to meet stronger demand from fiber and wavelength sales. The company generated free cash flow of $281 million in the quarter compared to $237 million from the year-ago quarter.
In summary, we remain focused on our revenue performance and have multiple initiatives in place to drive growth. We are excited about the combination with CenturyLink and look forward to what lies ahead.
With that, I'll turn the call back to the operator so we can get your questions.