Yes, you can use the Telos VX with POTS lines. As with most modern phone systems, POTS lines need to get converted into SIP format. This is done one of several ways: Use an external POTS-to-SIP Gateway. There are several on the market ranging from $200 to $2,000 or more. We suggest using Patton gateways, but other other popular brands such as Audiocodes, Sangoma, Adtran, and Grandstream can work well, too. Our VX configuration experts can help you choose the right model. Use an open-source PBX with POTS adapter cards. This is typically an Asterisk-based phone system, with Digium POTS adapter cards in a PC server chassis. Going this route has the benefit of adding Voice Mail, Legal Disclaimer Announcements, and other sophisticated call-handling options to your Telos VX Studio Talkshow System. Have your business phone system convert POTS to SIP. Modern business phone systems can do this with the right options and programming. Another option is to change the way your phone company delivers these POTS lines to you. POTS, being an analog transport, is prone to audio problems that just don't exist with digital transports. Options from your telco are usually T1, PRI, and SIP. You'll find the caller audio quality to be higher when your calls are delivered in any of these ways. T1 and PRI will still require conversion to SIP before being brought into your Telos VX; T1 and PRI can be converted just as POTS is converted, using any of the first 3 methods above. Eventually, your phone service absolutely will be delivered over SIP, perhaps via a dedicated DSL or other IP transport media. SIP really does simplify the hardware requirements at your studios, so you may want to consider making the switch to SIP now. The best news is that, no matter which telephony transport you want to use, POTS, T1, E1, ISDN BRI, ISDN PRI, or SIP, we're able to walk you through the process. Telos has been through this process with customers hundreds of times, and we're happy to assist you as well. In the end, you'll be delighted with the improved quality of your phone calls, especially when you go to SIP directly.