Vocalocity, a developer of voice platform software, closed on $6.5 million in venture capital on Friday.

The Series B round was led by Sutter Hill Ventures. All the company’s investors participated in the new round, including Atlanta technology Ventures, the ATDC Seed Capital Fund from Georgia Tech, Five Paces Ventures and Imlay Investments. The firm has now raised $11 million.

Vocalocity said the deal came after it scored its “largest win to date” by securing a deal with a large telephony systems manufacturer to act as an OEM for Vocalocity’s “Voice Gate” as part of a communications software offering. The company added that the additional funds would be used “to support increased demand” for its software.

“We’ve been working with various OEM and VAR prospects for some time given the magnitude of their purchase decisions,” said Mike Dickerson, Vocalocity’s CEO, in a statement. “As more of these opportunities come to fruition, Vocalocity’s growth ensures we continue to provide our partners with superior support during the integration, rollout and launch of their voice platform.”

Dickerson is a member of the Atlanta Technology Angels Executive Committee and a founding partner of the ATA Seed Fund. He also is a co-founder of Vocalocity

Vocalocity’s software is designed to enable OEM and VAR partners to provide telephony solutions “faster and with an unprecedented level of control.

On June 7, Vocalocity announced a strategic alliance with Voice.Trust, a European-based provider of voice-based authentication solutions. Its “Voice Gateway” will be included in the Voice Trust Server 5 product for voice authentication solutions.

The company has been deploying products since October of 2002.

Vocalocity: www.vocalocity.com