[khakwani]

Hi,
if i call within the same LAN the two handytone486 can call each other and the voice works.
if the adapters are on 2 different locations (one home and other at friends home) then the phone rings but there is no voice. I have tried to use DMZ feature of the router but same result.
Please help

[mberlant]

There are a lot of threads here, mostly in the Linksys/Sipura forum, that discuss all the extra things you need to do to get two ATAs to talk to each other directly without using a service provider to get you through the two NAT routers.

Have a look through there and see if you can't learn what you need to do, or at least what information you need to post to start solving your problem. You may end up subscribing to FWD, or another service provider, to avoid the hassle of configuring and nursing two routers (yours and your friend's), or you may decide that direct IP calling is what you want.