Been having this minor issue where the Uniden 1515+1 DECT 6.0 Cordless phone will sometimes cut off internet while in use. Router internet light will go red then go out. Takes about 10 minutes for it to come back on. The corded phone does not have this problem. The secondary phone outlet is spliced off the primary since the installers said it would be a big task to run a cable directly from the point outside due to concrete. Here is a diagram of how everything is set out phone/internet wise. Hopefully there is a setting in the phone or modem which will solve this issue.