What is the work phone...a cell phone or IP phone? Who says directly to the modem? Why not directly to a router? If connected directly to the modem, no other device would have Internet access...including a work computer. I'd contact your office for clarification.
Or are you calling the Panoramic router a "modem?" If so and you can't move the Panoramic, a long Ethernet cable.
I say directly to the modem. That's who. As Cox calls it a Router/Modem. Cox said this particular device is a 2 in 1. However, Bruce, your rudeness isn't necessary. You obviously don't possess the personality of a Customer Service Rep. Therefore, I HIGHLY RECOMMEND a different field of employment.