The phone that currently has the issue has a MAC address of 005058517fdf (displayed in the menu of the phone and on the label on the back.) but the networking group is telling me that they see MAC address 001fc1000004 on the switch side. Our network requires that a MAC bypass is setup for the phone to access the network. The MAC issue causes the device to not pick up an IP. Doing a MAC Lookup online on the server side MAC returns Hanlong Technology Co.,LTD which seems to make VOIP phones. My theory is that Sangoma rebrands these HTek phones.