You asked if this device to be re-tasked for the IP port routing before your dedicated link is installed -- No - this is not what this device is intended for.
This is too complicated for me to explain to you at this point. You should discuss this with those who are providing the 'dedicated' link. You may or may not need another device, that will depend on how the network is configured and who is 'on it'.
If the 'other end' is another part of your organization, then you may not need another device. If the other end is an ISP organization or DSL aggregator - then you will likely need a second IP router.
The IP you gave me is the external address for the gateway device (which is an ADSL bridge modem in this case) - that IP only works with the pieces (equipment/software) at the other end of the circuit. When the circuit is installed, you will be assigned an IP range, the gateway IP and the subnet mask.
You are sitting at the end of a circuit that probably is awating configuration.
I'm a network engineer, but this is simply too complex, and I am missing too many parts. It has nothing at all to do with XAMMP. Its also not the type of work I perform for free, I make a living doing network engineering LOL.
At this point - I have given you a complete description of the situation, you need to talk to the other parties involved.