Basically, I am adding a Google Hangout button to my Contact page. The idea is for my visitors to be able to press the button and for it to initiate a Google Hangout with me.
Is this possible?
Is there anything that makes this possible?
I found this on Google Developers:
Get a Developer APP ID
The button must contain the app ID of your Hangout app or extension. Go to the APIs Console, select the Hangouts project you want the button to start, then copy the app ID from the current URL at the top of the browser, like this — it's the number that follows "project:", and will be at least 12 digits long.
Test your app
To test starting a hangout with your app or extension running in it, go to:
where you replace APP_ID with the value from the previous step. This URL is used in the next step.
Adding a button to your page
The Hangout button comes in the following four sizes: 79×15, 86×20, 24×100, 60×230. Each button is followed by the HTML code you should embed in your page. Replace APP_ID with your application's app ID (from above).
This is the code for the 79×15 button:
<a href="https://plus.google.com/hangouts/_?gid=APP_ID" style="text-decoration:none;">
alt="Start a Hangout"
Click on the button to start a hangout with your public application or extension running inside it.
After more research, doesn't look like this feature is available yet. http://productforums.google.com/forum/#!topic/google-plus-discuss/-cJeQltplhE