A router is a networking device used to connect your computer or other equipment to an internet service provider (ISP). If you have home internet service, you have a router. How the router will work with your VoIP phone depends on the model (and on how old it is). Many consumer routers allow you to simply plug in a VoIP phone to use it; a few need to be configured to work with a VoIP phone.
To configure your router to work with your VoIP phone:
First, see if your router allows plug-and-play setup of a VoIP phone. If not, follow these troubleshooting tips:
Public IPSBC addresses (IPv4):
Open these ports for SIP from all CenturyLink session border controllers (SBCs):
Open these RTP ports for all CenturyLink SBCs only:
The IP address of the CenturyLink SBC varies and can be provided by the CenturyLink provisioner working the order.
If a firewall feature is configured in the router, it must allow the following traffic to pass between all Hosted VoIP phones and the CenturyLink SBC (in both directions):