The instructions (How do I configure a CISCO router for to allow connection to a VOIP provider?) assume having the sdm software. I do not. My configuration is a Cisco 827 with SBS (2 nics). Cisco 827: 166.xxx.xxx.73 External Nic: 166.xxx.xxx.74 Gateway 166.xxx.xxx.73 Internal Nic: 192.168.xxx.2 I understand how to use hyperterminal, etc; but every combination of ip nats I have tried do not work. Please help!