- Make sure that the VoIp adaptor is the first to connect to the broadband modem, and then connect your router to the ATA.
- You might have implement port forwarding, in that case open the UDP ports 5060 and 5061 and RTP ports 10,000 to 20,000 for voice streaming.
- You must set the static IP address on the ATA and forward that address in the additional router.