The VoIP (Optional Purchase Required) tests the ability to measure voice quality of your VoIP networks and gateway, internet protocol (IP) phones and other end point devices.

After the meter has successfully ranged and registered with the Cable Modem Termination System (CMTS), the PacketCable multimedia terminal interfaces, and the Multimedia Terminal Adapter (MTA) has been successfully initialized, you are provided the ability to place and receive a phone call with the meter. After a call is placed or received, test results are displayed.