I currently have broadband cable internet access and I want to setup Asterisk with a D-Link DVG-3004S Analog SIP Trunk Gateway and a Linksys WRTG54 router so I can terminate calls to the PSTN through my ITSP. I would like to know the best way to set this up and if I need any additional equipment. Also, I would like to know how to connect to a remote location (WAN, VLAN, etc) so calls can go back and forth. The specifications for the Gateway is on the link below.
Or can I simply have Asterisk setup also as a gateway and also use it to connect to a remote site?