Hi

Call Sequence is ...

Client A/B register on Kamailio and both are registered successfully..
Firewall is stopped.

Now... Client A call to Client B..

Client A => Kamailio => Asterisk => Kamailio => Client B

Above is call sequence, when call goes from Asterisk to Kamailio ... then found below error....

ERROR:tm:t_forward_nonack: no branch for forwarding
Oct 28 02:14:07 openser1 /sbin/kamailio[2915]: ERROR:tm:w_t_relay: t_forward_nonack failed
Oct 28 02:14:07 openser1 /sbin/kamailio[2915]: ***** OUT route[8]

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Regards,

Chandrakant Solanki