I have a Cisco SPA525G VOIP phone in country x connected on a home internet connection.
I have 2 internet connections and my VOIP phone registers to it's server on one of them.
If that one connection that the phone works on goes down, I am at a loss of VOIP connectivity.
Hence, I want to build a SIP Outbound proxy server on a VM running Centos or any OS hosted in my head quarter country y. I have static public on my server in country y.
I need help and ideas on how to channel my SIP traffic through the proxy server in the country y and in setting one such proxy server up.