Well, look at all the offers for help, and that is without posting your picture!!!!!
If you need a basic config file for a A800, calling a carrier, I could send one too.
Or Hugo, or Mat.
Or you could cheat and go to any of the new providers that offer services to ATA and other devices, they also have sample configurations for ATA most of the time.
Even dualtalk.com does have some samples.
You need to setup only about 10 items to start making calls.
I have number three……..
Best regards.