New in asterisk, two questions

Hello World, :smile:

I have a Linksys SPA2102 and an Askterisk server, how I must do that: when the router make a call, it should be wait for 30 seconds for an answer and then hang up the phone if no one answers.

Then, there is a way to reduce a small amount of lag time at the beginning of a call because when a person answers, the automatic message starts before he hears.

Thanks a lot for support me.