[Asterisk-Users] Problem with SIP clients

[Alex Piqueras]

Hi, I have my asterisk server inside a NAT.
When i connect a softphone SIP inside my net, all go well. Ok.
But when I try connect a SIP softphone client outside my NAT, I get:
NOTICE[6087]: chan_sip.c:7691 handle_request: Registration from 'Alex 
<sip:phone2 at 192.168.1.21>' failed for '83.41.119.25'

Can someone help me with this?

PD: Sorry for my english