[Asterisk-Users] Connecting SPA-300 to Asterisk

[Sys. Concept Inc.]

How to Connect SPA-3000 to Asterisk so * will answer?
After setting up Asterisk on Gentoo the extension.conf contains [demo]
context; but my asterisk is not answering?

In SPA-3000 in PSTN Line - tab under Dial Plan 1 I have:
S0<:demo at 10.0.0.101>  
Default dial plan is set to 1.
My box's IP where Asterisk is running has IP: 10.0.0.101
Line 1 - tab has:
SIP Settings Port: 5060 
Nat is disabled as both Asterisk and SPA-3000 are behind firewall.

What am I missing?

--
#Joseph