Scope: The following will show you how to obtain the Contact. This can help you determine if your Desk Phone has a contact with Public IP instead of Private IP, which indicates you may have SIP ALG or Double NAT occurring. Requirements:Access to Manager PortalBasic User Log in to the Manager Portal.Once logged in navigate over to the Phones tab.Hover over the IP Address for a particular device. This IP Address will be the Public IP of your device.A pop will appear with the following information:Extension NumberContact IP:Port NumberIf this device is a Desk Phone, you would want the Contact IP to be a Private IP Address. Office ManagerLog in to the Manager portal.Once logged in navigate over to the Users tab.Select a particular User.Click on PhonesHover over the IP Address for a particular device.This IP Address will be the Public IP of your device.A pop will appear with the following information:Extension NumberContact IP:Port NumberIf this device is a Desk Phone, you would want the Contact IP to be a Private IP Address.