What should I do if I accept credit cards, and I need to upgrade my business phone lines?

First, take down the make and model of your current POS terminal. Then call your merchant service provider. The best thing to do is speak to a knowledgeable support representative, and let him or her know what you are considering doing with your phone/internet system. The support rep will help you find the right type of credit card processing device to match your planned system upgrade.