I have started a new thread to explain what my current set up has turned out
to be and what I want from it.

I THOUGHT I was getting a Linksys SPA 1001 BUT (long story but my son got it
for me!) it turns out I have a Linksys PAP2.

I want to use VoipDiscount as they give me 120 "Free Days" with 300 minutes
per week to Malaysia and Singapore (as well as "Free" Uk calls.) I say free
but you have to pay £10 every 4 months for these.

Anyway I have got the ATA set up and working with my VoipDiscount settings
and made my first few calls out.

To go back to my original question, how do I get calls IN to the VOIP phone.
I now realise the VoipDiscount do not give an incoming number. I have
registered with Sipgate and got a free number. How do I use it with this
setup? There are two phone ports on the ATA and I could plug a second phone
in and set that up using my Sipgate details but it would nice to be able to
use the same phone.