ForObibi:
Could you try a couple of things to test to see what is going on? Try these individually.
1. Give the OBi110 a Static IP address outside of your DHCP range...let say 192.168.1.160 if the range is 192.168.1.2 - 192.168.1.150. Also, set your DNS. The setup would look something like this:
AddressingType = Static
IPAddress = 192.168.1.160
SubnetMask = 255.255.255.0
DefaultGateway = 192.168.1.1
DNSServer1 = 8.8.4.4
DNSServer2 = 4.2.2.2
2. Disconnect all the other LAN devices and have only the OBi110 attached to your Router and then test by rebooting the Router with only the OBi110 attached to the LAN port.
3. Attached the OBi110 to the Modem, then reboot the modem and test.
4. Borrow another VOIP friendly Router from a friend or from Walmart (
) and test to see if you get the same results.
Have you updated the OBi110 to the latest Firmware that was released a few days ago (1.3.0 (Build: 2824)?