On Gmail chat, if the camera icon is green, it means that they are available to chat and have a camera attached. If it is just a green dot, it means they are not available.
That means you are chat with vision live
it means that u r able to vidieo chat.
That the person had webcam capabilities but is idle (nonactive for a period of time).
my friends icon is missing when she is in chat, Why?
it means that that person is not online.....
dont knw
It just means that they have typed a text but they are not sending it.
Call phone is a feature to enable voice calling. It can be done via Gmail left pane. Gmail voice calling is not free and costs you money.
Idle means the person is not chatting with anyone. The chat system is idle not working. It is the availability sign on Gtalk.
It means that they have a webcam so u can video chat!
You gmail does not give a notification about rejection. It means that either the person has not read it. Or it could be that the person rejected it.
The red dot beside the chat is the availability. It shows various types of moods of user. The red dot shows that the user is busy.
that person is logged in but may be away from their computer on doing something else other than gmail.