I read and configure several times my *@home without sucess. 

Basically I have : 

Routeur1 : staticIP and domain name (LAN1) 
- Asterisk@home 
- some softphone 

Routeur2 : staticIP and domain name (LAN2) 
- some softphone 

To call a softphone from an other softphone inside the LAN1, no pb, I just call the extention and everythong works. 

But I can't call from LAN2 to LAN1 (or LAN1 to LAN2). LAN2 softphones registered well, but I have timeout error. 

I tried also to add iax (from FWD). I tried several configs as on this forums people use iax2.fwdnet or pulver. When I try to call a FWD number (for exemple : 393612 or 19197543700) I have no connexion. 

Have you tried to do the same ? 
How are your configuration files ? DO you have a simple working example for to LAN with NAT routers and FWD ? I also tried voip-info.org but configurations didn't worked. 

My purpose is : 

I want to call anybody from LAN1 to LAN1, or LAN2 to LAN2 or LAN1 to LAN2, and I also want to call Voip SIP number. I also want to receive theses calls... !! What number should a FWD user tap to call me ? 

I'm not interested for calling RTC numbers for the moment