Hello.
There are Server settings (primary server) and Backup server settings which can be used to duplicate records or as backup if for some reason primary server fails to respond to the device.
You can use SMS commands.
Server settings:
<login> <password> setparam 2004:<Domain or IP of the server>; 2005:<port>;
Backup Server settings
<login> <password> setparam 2010:(1 - for backup, 2 - for duplication choose one option depending on your needs); 2007:<Backup server domain or IP>; 2008:<backup server port>;
If you have not set login and password for SMS sending you just leave 2 blank spaces before setparam command like this: " setparam"
If you have more questions, please ask.
Best Regards