I want to build a server which will act purely as a SIP proxy. The idea is I will put the proxy into my DMZ, and on my internal firewall I already have a Cisco 2600, which will convert the sip traffic into something the pbx understands. Can I do this with Ser? Do I need to have MySQL installed, after all it's just a pure proxy? Can I use it to create CDR's? Any help appreciated. Zac Tolley