The problem i am facing right now with my asterisk server is that its not being listen the SIP port at 5060. But if i changed the port from 5060 to something different then i am able to register the extensions at that port.
My server is behind a firewall and on the firewall UDP,TCP,RTP, and SIP services are allowed.
what exactly should i look into to to resolve this issue. your help in this regards will be highly appriciated.