i have been having the same problem for nearly a month now and at times, no connection/tel/iptv for hours. TM came and changed the port at the apartment building on the first visit. Did not fix the issue. The came again on Monday and replaced the ZTE modem with the Huawei modem. Still did not fix the problem. There is totally no Internet at the BTU level. i am non wired home network. when the net is down, both the PCs do not have connection ahd the Internet, DSL and VOIP light shut down. freaking annoying. I had to get a standby digi broadband mofo!