Creating a NAT with Cisco Router (827) and a sw phone

Hello, I have a 827 Cisco Router; It has 3 ports on the back; one for Ethernet, one for console, and an ADSL port. I have a PC with a software SIP phone. My environment is a LAN which is connected to the internet.

I want to configure a NAT on this Router, so that the software SIP will have a local address (like, say, and will be able to connect to the outside world via the Router NAT (through the LAN).

It seems to me that I should connect the PC directly to the Cisco router, through a HUB, and connect the HUB to the LAN. Is it so ? What should I do ?

Reards, Mark

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