Known issues
- SIP ALG is enabled by default and must be disabled to prevent issues with VoIP phones.
- DNS DHCP servers need to be set to efficient DNS servers to prevent registration issues with Polycom phones.
Resolution
- Log in to the router's web user interface.
- Click on Firewall > Firewall Advanced
- Set SIP ALG to Off
- Contact AT&T and tell them that you want the DHCP DNS servers on their AT&T modem changed to Google's public DNS:
- Primary DNS server: 8.8.8.8
- Secondary DNS server: 8.8.4.4
- It is not clear if there are any additional issues with this router, if you run in to any issues contact UNIVERGE BLUE® so we can better document this device.
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