Solved Router And Credit Card Machine

A friend of mine wanted me to setup her small network at her business(1 tower, 1 laptop and 1 netbook). They purchased a Linksys e1200 router and I helped them set that up with the 3 pc’s. Now they have a credit card machine that connects to a Belkin router. Sorry I don’t have the model number of the router and I don’t have the model number of the credit card machine. Some pc tech(friend) of theirs purchased and then connected the Belkin router to the credit card machine and from what I under stand from them, didn’t set up anything on the router for the CCM. He just plugged it in and left. I am not familiar with connecting credit card machines to routers and setting up anything on the router(ip address, security, etc.). What I want to know, as they do, is there anything else to set up for credit card machine. Should the credit card machine be set up on one router by itself, does the business that provides service for the credit card machine need to be aware of the router and then maybe some security issues installed and does the credit card machine requirement be to be installed on it’s own router. I can’t really find any definitive information concerning this subject(okay, I only did 2 searches). I want to say to them, call your tech and ask him but they have been having a hard time getting him to reply to their calls messages. I have made it a habit over the years to not step on any pc tech ‘toes’ in situations like this. All replies are greatly appreciated and respected.

Loretta