Because of its broad reach and well known name, AT&T has been a popular supplier of voice services to small and medium businesses. Recently, the company has been facing significant competition from traditional cable companies. Adding VPN security features to its voice services was a step that AT&T needed to take in order to assuage customers' security concerns.
However, more work is needed. Ideally, businesses want to take advantage of their consolidated data, voice and video by tapping into unified communications applications. AT&T does not currently offer such services but is moving in that direction -- like many other vendors. The VPN enhancement provides them with a necessary security piece for such applications, but the company now needs to layer additional functionality on top of it in order to meet customers' unified communications needs.