In its announcement, AT&T said it is adding access to the global network faster than previously planned from another 20 telecommunications nodes to meet customer demand.
Those 20 are in addition to 102 nodes already scheduled to be added to the company's global network this year.
Joyce Van Duzer, an AT&T spokeswoman, said the 20 cities were originally expected to be added to the network over several years. The expansion of the network will allow wider telecommunications access by corporate users from more places around the globe, she said. AT&T is spending $300m (£192m) to expand its network.
AT&T added that it plans to deploy new worldwide end-to-end private line networking capabilities by next April, while noting that its enhanced VPN services, announced last January, will be available to customers globally by the fourth quarter of this year.