A strange problem with A800

Hi All,

I have setup an A800 for t e r m i n a t i o n. I am connectd to a carrier in the uk. Tests were successful from there but I could not originate. I opened ports 1718 1719 1720 but same problem. Now I have restored the same settings but i have another problem:

When we run tests again, my partner sends test, he can hear me but I cannot hear him.

Please share your views.

Thanks

James