I have a Mitel 200-SX that I would like to hook up to an Asterisk server so I can do VoIP. The card in the Asterisk server has 4 Analog ports so I am wanting to do is have all calls that start with a leading digit of 7 pushed down one of my available analog ports from my Mitel to my Asterisk server. What form should I looking at in order to this?

Thanks, Scott