Also, you will have to 'port forward' one of those ports (secured or unsecured) with your router so that port forward will go to your 192.168.0.111 IP address.
This PortForward site has some good tutorials for doing port forwarding setup based on your router model number.
So, to set this up OUTSIDE your LAN you would have to know the WAN IP of your main cable or dsl modem.
You can easily find that address by going to
THIS site.
Then you will setup your phone with that IP and the port number you port forwarded.
Also note that your cable modem's WAN IP is subject to change. Most here use a DNS service such as DNS.org and have that setup in our routers so the name you pick will always be associated with the latest WAN IP address.
So if you pick a reregistration name of pittbull.dns.org you would use that name and the port number forwarded for your eKeypad settings.