Google last month reserved 1 million phone numbers with Level 3, signaling that it may finally be ready to roll out its long-anticipated Google Voice service.

The free service, announced in March, lets users unify their phone numbers, allowing them to have a single number through Google Voice that rings a call through to all their phones.

Sources could not say when the 1 million numbers may be assigned. Level 3 has been supplying Google with phone numbers since the introduction of Google Voice, so the 1 million numbers are an indication Google is close to adding a significant amount of users.

A Google spokesperson would only say “as a matter of policy, we typically do not comment on contracts with third-party technology suppliers…”

Google Voice has a number of unique features including call transfer between a user’s devices, multi-party conferencing, conversion of voice calls to text messages, cut-rate international calling, and call transcription…

But the gem is the fact that a user can have one phone number people can dial to reach them regardless of where they are located, either home or mobile. Google Voice uses VoIP to link collections of phone numbers.

Yeah, I just checked. Google Voice ain’t available, yet.

Leave ’em your email address and they say they’ll drop you a note as soon as they hit the cyberstreets.