I would like to install asterisk to let the PCs in our WLAN network to call each other using a softphone such as X-lite. But I do not want to use any trunk. I have tried but X-lite always reports the error number 408 SIP account can not be enabled.
408 it is request time out, make sure Asterisk is listening on the default SIP port ( UDP 5060), and that there is no firewall or iptables blocking the incoming traffic to the Asterisk server.