thank you ovidiu I do not have an init scrip, I start and stop using the "kamctl stop|start" which is a bash script.Is this the one that you are referring to? I intend to listen on the same port but in another IP, each instance will use a different ip, so I have to change the listening ip only. regards jp ----- Original Message ---- From: Ovidiu Sas &lt;osas(a)voipembedded.com&gt; To: Juan Perez &lt;jperezsip2008(a)yahoo.com&gt; Cc: Iñaki Baz Castillo &lt;ibc(a)aliax.net&gt;et>; users(a)lists.kamailio.org Sent: Friday, April 3, 2009 3:53:25 PM Subject: Re: [Kamailio-Users] another instance of kamailio on the same machine All you need is to follow this simple steps: 1. make a clean install of kamailio 2. define your config files for each service:    - kamailio1.cfg    - kamailio2.cfg 3. create two seprate init scripts: kamailio1 and kamailio2 4. make sure that each init script is using the appropriate config file (use option -f <my_config file>) 5. make sure that you are not listening on the same sockets for both servers (i.e. set one server on port 506 and the second one on port 5070) 6. If you are creating pid files, make sure that the pid files are different for each service That's it.  You don't need any symbolic links. Regards, Ovidiu Sas On Fri, Apr 3, 2009 at 4:46 PM, Juan Perez &lt;jperezsip2008(a)yahoo.com&gt; wrote: