i have configured properly asterisk. At the one end i am using x-lite soft
ph and another end twinkle. call is going properly from both end but after
picking the phone not able to listen other one.
when i checked the port 5060 on the asterisk server it is always showing
closed while i have flushed all the rules from iptables (iptables -F)
PORT STATE SERVICE VERSION
5060/tcp closed sip
telnet localhost 5060 (could not connect)