Open 2 BrowserWindows (Chrom/Firefox) for this site
Click -offer- button of one of them

var offerCreate = function()
{
    peerCon
        .createOffer(function(description)
        {
            peerCon
                .setLocalDescription(description, function()
                {
                    console.log(JSON.stringify(description));
                    $('#local')
                        .text(JSON.stringify(description));
                }, error);
        }, error);
};

Copy the output and Paste to RemoteDescription TextArea on the other side(right).

Click -create answer- button

var answerCreate = function(descreption)
{
    peerCon
        .setRemoteDescription(descreption, function()
        {
            peerCon
                .createAnswer(
                    function(description)
                    {
                        peerCon
                            .setLocalDescription(description, function()
                            {
                                console.log(JSON.stringify(description));
                                $('#local')
                                    .text(JSON.stringify(description));

                            }, error);
                    }, error);
        }, error);
};

then, Copy the output at the LocalDescription and Paste to RemoteDescription TextArea on the other side(left).

Finally, Click -get answer- button

var answerGet = function(description)
{
    peerCon.setRemoteDescription(description, function()
    {
        console.log(JSON.stringify(description));
        alert('local-remote-setDescriptions complete!');
    }, error);
};