total newbie here, hope this is the right forum to post this. My company is considering moving to a direct fiber connection provided by TW. Currently we have a T1 PRI providing phone service. I called the phone switch company about getting a SIP card for the box and they indicated it cannot accept on as it is a digital only switch. The tech suggested looking at a box to convert the SIP (fiber) connection to a PRI connection so the phone switch would recognize it. Thanks in advance to your expanding my knowledge and suggestions on how to make this happen.