Exactly how Google plans to use Florida-based VoIP Inc’s subsidiary VoiceOne Communications network was not disclosed. The two companies have inked a peer-to-peer contract, which means Google’s network of users would be connected to VoiceOne.

Google had been trialing VoiceOne since last September as a click-to-call advertising service, whereby users can speak with advertisers on search results via VoIP.

But a VoiceOne spokesperson confirmed yesterday that the VoiceOne network enables customers to also connect to the traditional PSTN system.

VoiceOne is an MPLS, or multi-protocol label switching, which means it is essentially protocol agnostic and would, therefore, support SIP.

The spokesperson said VoiceOne reaches 90% of US homes. She said she could not disclose specifics on the Google contract due to a nondisclosure agreement and Google would not elaborate.

A filing with the US Securities and Exchange Commission stated that VoiceOne had a direct peering relationship with Google for the transport of [VoIP] services at multiple locations.