Make Call From The Google Voice Android App :

Inserting message or calls together with Search engines Speech is practically the same as putting message or calls through your current mobile service, based on whether there is a Search engines range and how we possess configured Search engines Speech around the telephone.
1. Contact a new call just like you should without having Search engines Speech.
only two. In the event you’ve configured Search engines Speech for you to request whether you wish to utilize it each time you area a new call up, effect Contact together with Search engines Speech in the discussion. In the event you’ve configured Search engines Speech to make use of that for all message or calls, this specific discussion doesn’t seem.
3. Search engines Speech displays a communication, reminding people that you will be putting the letter through Search engines Speech.
In the event the call up is really a toll call up, Search engines Speech represents a communication while using per-minute cost and the number of moments as of this price you have remaining as part of your Search engines Speech account.
Observe: Utilizing Search engines Speech pertaining to Android os app to put your current home and/or intercontinental message or calls will probably nonetheless employ regular moments from a cellular telephone program.

Via : http://gvoice.info/make-calls-from-the-google-voice-android-app/