SAN FRANCISCO (MarketWatch) -- Google Inc.'s report to the Federal Communications Commission that it was Apple Inc. that rejected its Google Voice application from the popular iPhone's app store is at odds with Apple's version of events.

With Google's GOOG, +0.01% permission, the FCC posted online a formerly confidential letter from the company stating that, "Apple's representatives informed Google that the Google Voice application was rejected because Apple believed the application duplicated the core dialer functionality of the iPhone."

The letter was made public Friday. Read a copy of the letter

Google notes in the letter that Phil Schiller, Apple's senior vice president of worldwide product marketing, informed Google executive Alan Eustace "that Apple was rejecting the Google Voice application" during a phone conversation July 7.

Google's Washington Telecom and Media Counsel Richard Whitt said in an online posting that the Mountain View, Calif.-based company opted to disclose the letter after Apple AAPL, +1.50% disclosed its own response to an FCC inquiry on the matter.

However, in Apple's version sent to the FCC, it stated that "contrary to published reports, Apple has not rejected the Google Voice application, and continues to study it."

Apple spokeswoman Natalie Kerris said in a statement that, "We do not agree with all of the statements made by Google in their FCC letter. Apple has not rejected the Google Voice application and we continue to discuss it with Google."

Google Voice is an application that enables users to connect all of their mobile and land line numbers and messaging in a centralized hub.

When news of the application's rejection from the iPhone app store surfaced, initial speculation on who might have been behind the decision shifted to AT&T Inc. T, +0.74% , the exclusive U.S. carrier for the device.

That's because the Google Voice application could in some respects present a competing service to AT&T. See related story.

The FCC, which has taken on a more active role under the Obama administration, intervened by sending queries to all three companies about why the application was rejected.

"In light of pending FCC proceedings regarding wireless open access and handset exclusivity, we are interested in a more complete understanding of this situation," the FCC wrote in letters sent to the companies.