Lumen help

Configuring your router to work with your VoIP phone

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.

Important: If you take your phone off the Lumen network, Lumen service level agreements, quality of service (QoS), and the ability to connect to the hosted VoIP platform are not supported. Troubleshooting is limited to providing phone and router/firewall settings.

Port & IP information

Public IPSBC addresses (IPv4):

  • Chicago—
  • Highlands Ranch—

Open these ports for SIP from all Lumen session border controllers (SBCs):

  • 5060
  • 5061

Open these RTP ports for all Lumen SBCs only:

  • 2222-2317
  • 3000-3000

The IP address of the Lumen SBC varies and can be provided by the Lumen 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 Lumen SBC (in both directions):

  • SIP—allow TCP ports 5060 and 5061  and UDP ports 5060 and 5061
  • MGCP—allow TCP ports 2427 and 2727 and UDP ports 2427 and 2727
  • RTP—allow UDP ports 16384-32767 (Some firewalls will dynamically open and close UDP ports for RTP as required and do not need the entire range of UDP ports for RTP opened all the time.)
  • NTP—allow TCP port 123 and UDP port 123
  • TFTP—allow TCP port 69 and UDP port 69
  • HTTP—allow TCP port 80 and UDP port 80; TPC port 2208 and UDP port 2208; TPC port 443 and UDP port 443

Note: Lumen doesn't test, certify, or provide configurations for routers available with other providers. Lumen repair cannot assist with router configuration or backup.