Open Access Articles- Top Results for Google Voice

Google Voice

Not to be confused with Google Talk or Google Voice Search.

Google Voice
Google Voice logo
Developer(s) Google
Initial release March 11, 2009
Platform Web, Android, iOS

Google Voice is a voicemail/phone management service [1] by Google[2] launched on March 11, 2009, after acquiring the service GrandCentral.

The service provides a U.S. phone number, chosen by the user from available numbers in selected area codes, free of charge to each user account. Users must configure this and/or additional phone numbers that ring simultaneously when their Google Voice number receives a call. For incoming calls, users must have an existing U.S. telephone number to activate their own Google Voice phone number. Inbound calls to the Google Voice number are forwarded to other phone numbers of the subscriber. Received calls may be moved between configured telephones during a call.[3] The user may answer and receive the call on any of the ringing phones or through the web-based app.

Users in the U.S. may place outbound calls to domestic and international destinations from their cell phone app or from the web-based application.[3] As of August 2011, users in many other countries also may place outbound calls from the web-based application to domestic and international phone numbers.[4]

Many other Google Voice services—such as voicemail, free text messaging, call history, conference calling, call screening, blocking of unwanted calls, and voice transcription to text of voicemail messages—are also available to users resident in the US.[5] In terms of product integration, transcribed and audio voicemails, missed call notifications, and/or text messages can optionally be forwarded to an email account of the user's choice. Additionally, text messages can be sent and received via the familiar email or IM interface by reading and writing text messages in Gmail or by adding contact's phone numbers in Google Talk respectively (PC-to-Phone texting). Google Voice multi-way videoconferencing (with support for document sharing) is now integrated with Google+ Hangouts.[6]

The service is configured and maintained by the user in a web-based application, styled after Google's e-mail service, Gmail, or with Android and iOS apps on smart phones or tablets. Google Voice currently provides free PC-to-phone calling within the United States and Canada, and PC-to-PC voice and video calling worldwide between users of the Google+ Hangouts browser plugin (available for Windows, Intel-based Mac OS X, and Linux).[7]

Domestic and outbound calls to the United States (including Alaska and Hawaii) and Canada[8][9] are currently free from the U.S. and Canada, and $0.01 per minute from everywhere else.[10] International calls are billed according to a schedule posted on the Google Voice website.[11]

As of October 2009, Google Voice had approximately 1.4 million users, of which 570,000 used the service 7 days a week.[12] This number has risen markedly since Google made the transition of its Google Voice service from "invitation only" to be available to all Gmail subscribers in the United States. A Wired Magazine blog post quoted a figure of 3.5 million in 2013.[13]


Google, via Gmail currently, provides free PC-to-PC voice (and, optionally, also video, which has been around much longer) calling worldwide. As described above, Google Voice users in many countries may make low-cost calls to international phone numbers, and currently may also make free PC-to-phone calls within the United States and Canada. This service will remain free at least until the end of 2013.[14]

A Google Voice local phone number for incoming calls is currently available only for users in the United States.[15] Users may select a single U.S. phone number from various area codes. Incoming calls to the number may ring simultaneously any of the user's configured phones or the account's Google Talk feature. Based on the calling number, or contact group (e.g., Family, Friends, Work), or on time of day (e.g., disabling a home phone during business hours and routing calls to mobile or business number), individual numbers may be configured to ring. The service also features voicemail with indexable automated voicemail transcription, accessible via a web browser, e-mail, or by phone. Google Voice provides automatic blocking of known numbers, e.g., telemarketers, the ability to switch lines in mid-call, differentiated voice mail greetings based on caller, Short Message Service (SMS) forwarding, and call recording.

Previously, customers of Gizmo5, a Session Initiation Protocol (SIP) service vendor acquired by Google, were allowed to forward calls to their Gizmo service which may be answered using a free computer application, or a web application, or SIP-based telephone hardware.[16] Google discontinued Gizmo5 service on April 3, 2011.

There are several competing virtual number services. Personal numbering services have been available in the United Kingdom since 1993, similar to the AT&T True Connections 500 service offered in the 1990s in the United States. AT&T's service required the direct involvement of AT&T to change the phone number list, while the Google service is user-configurable on the web application.

The original voice of GrandCentral and Google Voice belonged to actress and voice-over artist, Laurie Burke, but has been replaced with recordings by Kiki Baessell, a Googler who had no experience in professional voice-overs, but was chosen because of her pleasant, familiar voice.[17]



GrandCentral, founded in 2005 by Craig Walker and Vincent Paquet with funding by Minor Ventures, was acquired by Google on July 2, 2007, for US$95 million in a transaction led by Miles Agha. Although Grand Central users were able to continue to use the service after the purchase, new users were not accepted, and there were no public statements about Google's plans for the service.[3] On March 11, 2009, the management of the service revealed that the team had been working on it throughout that period, apparently in secret,[3] and that it was being rebranded "Google Voice".[18] It was to keep most of the functionality originally offered in GrandCentral and add new features.[19][20]

Google transition

GrandCentral's Closing Message that was sent to all users (0:26; Ogg Vorbis, 392 KB)

Problems playing this file? See media help.

Google Voice was launched on March 11, 2009, based on GrandCentral, with new features, including voicemail transcriptions and SMS managing. Google transitioned former GrandCentral accounts to Google Voice[18] and announced that the service would start accepting new members "within weeks" of the announcement.[3][18] On June 25, 2009, NBC's Today Show stated that Google Voice would be available nationwide on that day.[21] Google confirmed this in a Twitter message stating: "Google Voice on NBC Today Show. Invites to people on reservations list starting to go out today."[22] The expansion was at first limited to users queued[23] on the invitation list.[24] Users with paid-in balances also received a limited number of invitation opportunities.

On July 1, 2009, Google Voice provided the option for users to change their service phone number for a US$10 fee.[25]

On September 15, 2009, GrandCentral calling services were shut down. Subscribers who used the website could still log into the site to retrieve old messages and data.[26] After termination of GrandCentral phone services, users who haven't moved over to Google Voice were still advised to upgrade their account to Google Voice.[27]

Gizmo5 acquisition

On November 12, 2009, Google announced that it had acquired Gizmo5[28] for a reported US $30 million in cash.[29] A major effect of this announcement was that Gizmo5 suspended new signups pending re-launch by Google.[30] Google was reported to be working on a desktop application, though rumors also circulated that the project had been scrapped in favor of a browser-based solution.[31] On August 26, 2010 Gmail accounts with Google Voice were given a function to make and receive calls. Google Voice product manager, Vincent Paquet, confirmed that this function was added through the help of the technology received after the Gizmo5 acquisition.[32] In 2011, the Gizmo5 site closed service to its registered members. As of January 2012, the website is no longer available.

Open availability

On June 22, 2010 Google Voice dropped the requirement for invitations to become a subscriber, and the service became available to anyone in the USA with a Google account.[33]

Rejection from the iPhone app store

On July 27, 2009, Apple Inc. rejected a Google Voice app that had been submitted by Google six weeks earlier. Other apps created for use with Google Voice, such as GVdialer, GV Mobile and VoiceCentral, were removed from the App Store. Apple states that the reason for the rejection and removals is that these apps replaced certain iPhone functions and features.

A Google spokesman released this statement on the matter:[34]

We work hard to bring Google applications to a number of mobile platforms, including the iPhone. Apple Inc. did not approve the Google Voice application we submitted six weeks ago to the Apple App Store. We will continue to work to bring our services to iPhone users – for example, by taking advantage of advances in mobile browsers.

The Federal Communications Commission (FCC) has opened an inquiry regarding the rejection of Google Voice for the iPhone. "The FCC asked why Apple rejected the Google Voice application for the iPhone and removed related 'third-party applications' from its store." The FCC has also requested Google to submit a letter describing the application of Google Voice. "The request is part of a broader-ranging inquiry by the commission on exclusive deals between cell phone carriers and handset manufacturers for hot phones."[35]

In their response to the FCC, Google stated that the Google Voice application uses the carrier's voice network to place phone calls,[36] dispelling misconceptions that it is a Voice over Internet Protocol application. AT&T stated that they had no role in approval or rejection of the Google Voice application.[37] Apple stated that they had not rejected the application but were continuing to examine it.[38] One argument against allowing the Google Voice app on the iPhone is that they are concerned that it replaces the iPhone user interface with its own; however many dialers and messaging apps are available from the app store.[39]

As a result of rejection from the Apple Store, Google released its Google Voice iPhone application as a web app in January 2010, and certain apps like GV Mobile are available through Cydia on jailbroken iPhones.[40][41]

In September 2010, Sean Kovacs, creator of the app GV Mobile +, announced on his Twitter that Apple had re-accepted the application, and it has since been available for purchase on the Apple App Store. This is the second Google Voice service app available in the Apple's official application store for a year and a half, released just a day after "GV Connect" had been available.[42][43]

In November 2010, the official iPhone application became available in the App Store in the US. Google Voice is still not available in the App Stores outside USA.[44]

Google Hangouts Integration

In September 2014, Google Voice features were integrated into the Google Hangouts application (Google's IM client and replacement for Google Talk). While the Google Voice application is still available, migration to Google Hangouts is required to enable additional features such as VoIP calling.[45]


Features of Google Voice, many retained from GrandCentral, include:

  • A single Google forwarding number to all of the user's phones
  • Unlimited free calls and SMS within the US and Canada, up to three hours in individual length.
  • Calling international phone numbers with rates starting at US$0.01 per minute[46]
  • Call screening. Announcement of callers based on their number or by an automated identification request for blocked numbers
  • Listening in on someone's recording of a voice message before taking a call (press 2 while answering, * to "pick up")
  • Blocking calls from specified numbers
  • Blocking calls from numbers identified by Google as telemarketers
  • Send, receive, and store SMS/MMS online
  • Answering incoming calls on any configured phone
  • Call routing. Selection of phones that should ring based on calling number or time of day.
  • Ringing all of a user's specified phones simultaneously, routing calls to the phone that is answered.
  • Voicemail transcripts. Reading of voicemail messages online
  • Listening to voicemail online/via app or from a phone call to your account
  • Notification of voicemail messages via email or SMS
  • Personalized greetings based on calling number
  • Forward or downloading of voicemails
  • Conference calling (press 5 when answering call)
  • Call recording and online archiving (press 4 while on a call)
  • Switching of phones during a call
  • Viewing the web inbox from a mobile device/phone
  • Customize preferences for contacts by group
  • Initiating and receiving calls via VoIP
  • Ability to change your number for a fee
  • Ability to port your mobile number for a fee
  • Specifying an existing phone number instead of the Google Voice number on initial setup for use with limited functionality, such as some voicemail functions[47] and using the voice mail system for the user's phone number (mobile devices only).[48]

While many customers in countries beside the United States have been grandfathered into Google Voice services, the features are reduced and customers are often charged for calls to their own countries. Currently Google Voice PC-to-phone calling works only for calls into the United States and Canada or for domestic or international calls from the United States and Canada; Google plans to implement this for other countries, but a time frame has not been released. A US telephone number is required to obtain a Google Voice phone number for redirecting incoming calls.[49]

Caller line identification

As a call forwarding service, Google Voice also forwards the caller line identification (CLID or caller ID) of incoming calls to the user's telephone service. A user can choose whether to display a caller's CLID, or their Google Voice number, when receiving calls via the service.

Google Voice uses the caller's Google Voice number as the CLID on outgoing calls when the user places a call by calling the user's own Google Voice number and using the service's menu choices,[50] or when the web-based account portal is used to place a call.[51] With the introduction of the Google Voice application on iPhone, Android and BlackBerry phones, Google Voice users can directly dial from the Google Voice app with their Google Voice number as the outgoing CLID.

Mobile phone applications

Google Voice applications for Google Android, BlackBerry and Apple iOS can automatically place outgoing calls and texts via the user's Google Voice service.[52] They will also manage incoming texts and calls should the user desire. This allows Google Voice subscribers to send and receive free text messages on their mobile phones without paying for a texting plan or incurring service charges from their mobile provider, so long as all texts are sent and received through one's Google Voice number and not the number provided by the cell phone company.

Although Google Voice's iPhone app is not available outside of the United States, several other Google Voice clients exist for users outside the USA. For example Talkatone's iPhone and GrooVe IP Android client.[53]

Google Voice does not officially support SMS to phone numbers outside of the United States.[54] As of 1 June 2010 Google had purposely blocked international texts, with the intention of reintroducing the service once billing systems are in place.[55]

Integration into Gmail/Google Talk

See also: Google Talk

When Google Voice was offered during beta testing, Gmail Labs offered an add-on so users could listen to their voicemails in their Gmail inbox.[56] Since August 26, 2010, U.S. Gmail users may place calls to the U.S., Canada, and international destinations from within Gmail.[57] Calls to U.S. and Canadian phone numbers are free, while the cost of calls to international destinations starts at 2 cents per minute.[58] This is possible with the help of a voice and video chat plugin that users download and install so their browsers can take advantage of cameras, microphones, and speakers installed in the computer.[59] Additionally, all of these features are being made available to Google Apps customers as Google transition all of the apps accounts (Gmail, etc. within their own domain name instead of to be regular Google accounts. The account transitions should be complete by the end of 2010 and domain administrators are able to initiate the transition from their dashboard immediately if they so desire. If the user has a Google Voice account, the account phone number is used as caller identification relayed to the destination.

Users can also opt to have their text messages, transcribed voicemails (including an audio attachment), and/or missed calls forwarded to their Gmail account. Forwarded text messages emails can be replied to as if they were regular emails. Contacts' SMS capable phones can also be added to the user's Gmail address book or Google Talk buddy list so that text conversations can be initiated and sustained through these interfaces.

Integration into Google Hangouts

As part of the migration of Google Voice to Google Hangouts, the Hangouts dialer app is now required to place VoIP calls, whether a user has Google Voice or not. (A user with a Google Voice number can also receive calls on Hangouts.)[60] MMS was added as well for over 100 carriers worldwide, including all four major US carriers.[61]


No emergency calling

Google Voice refers to itself as an "enhanced call management application" and as such "is not capable of placing or receiving emergency services calls."[62] Attempting to dial 911 in the U.S. indicates that the number is not valid. Google previously recommended having "an alternative means of accessing 911 or similar emergency services."

Limited MMS

Multimedia Messaging Service (MMS) has limited support on Google Voice. Messages sent from the US carrier Sprint can be received by Google Voice and sent to users who have e-mail SMS delivery enabled, although they do not appear on the website. Since November 2013, MMS from T-Mobile users to Google Voice users get through as well.[63] MMS from other carriers are silently dropped. MMS can not be sent from a Google Voice number at all.[64][65][66] As of November 2014 this issue has been resolved for those who migrate their Google Voice account to the Google Hangouts app. Over 100 carriers now support MMS natively in Google Hangouts, including all four major US carriers.[67]

Limited Domestic SMS

Google Voice is unable to receive SMS messages from some domestic services such as various Apple user services.[68]

No international texting service

Although early adopters found they were able to send texts to international mobile numbers, this feature was never officially supported and was blocked as of June 2010.[citation needed] Currently an attempt to text an international number (outside of the USA or Canada) will result in a 'destination not supported' error message, though international text messages can still be received.

VoIP services

Google Voice permits Voice Over IP (VoIP) connections through Gmail or Google Talk, but offers no simple way to communicate with users of other VoIP services, e.g. by direct connection between IP addresses or SIP gateway.[69] However, some users are able to receive VoIP calls with their Google Voice accounts at the SIP address"" (where xxxxxxxxxx is their US Google Voice number).[70]

Third-party devices

Hardware manufacturers such as Obihai Technology have created devices that enable the home user to use conventional wired telephone(s) to place and receive calls over their broadband connection through Google Voice, as well as other service providers.[71]

Google Voice terminated support for XMPP in May 2014, disrupting service for 3rd party apps and devices that use the XMPP signalling protocol. Affected vendors included Talkatone, GrooveIP and Obihai.[72][73] Obahai initially recommended its users switch to rival providers[74] but returned with official Google Voice support for its hardware analog telephone adapters on September 11, 2014.[75]

Software manufacturers have developed downloadable applications, like's "GVJack" App that converts magicJack dongles to use Google Voice.[76] The GVJackApp for magicJack and the GVMate Phone Adapter are signalling independent and continued to work (using Google Hangouts) after support for XMPP was terminated.[77]

Call forwarding and voicemail

If the phone to which a call is forwarded does not connect within 25 seconds, then calls are routed to Google Voice's voicemail.[78] Users who want calls to be picked up by their home, work, or mobile phone voicemail systems or answering machines must turn off call screening in Google Voice and make sure that their phone's voicemail systems or answering machines pick up before 25 seconds.[78]


Google Voice provides no direct phone support contact number.[79] However, users can access the Google Voice Help Center[80] FAQ, and use the free Google Groups official Google Voice product forum[81] for support.

Partners and infrastructure

Google Voice's partners that provide phone numbers, call-termination, call-routing, and other infrastructure include:

In 2009, Google reserved 1 million telephone numbers with Level 3 Communications which were presumed to be for Google Voice.[82]

Dispute between AT&T and Google about call blocking

AT&T petitioned the U.S. Federal Communications Commission (FCC)[83] to require Google (as it requires POTS providers) to allow calls to high-cost destinations, typically rural independent telephone companies with wholesale prices up to ten times above the national average. Google responded that it is not obligated to allow these calls.[84][85]

See also


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