Key Information About this Router
- This router does not have SIP ALG - confirmed on Hardware Version 2, firmware version: 3.17.38 Build 140613 Rel.55867n.
- The Bandwidth Control engine is powerful and effective, especially for an economical router.
Known Issues
- DNS server addresses need to be changed to set of efficient DNS servers, like Google's DNS or another DNS, to prevent intermittent registration failures on Polycom phones.
- DNS proxy/relay is enabled by default but it can be disabled.
- WAN ping response to our Call Quality Monitoring and Troubleshooting Server needs to be enabled.
Resolution
- Login to the router.
- Under the Status page, write down the Firmware & Hardware Version.
- The steps below apply to the following:
- Hardware Version: 2
- Firmware Version: 3.17.38 Build 140613 Rel.55867n
- If you are running an older firmware version, upgrade to at least the firmware version above.
- If you are running a newer firmware version, let UNIVERGE BLUE® know so that we can verify if the newer version.
- Go to Security > Basic Security:
- SPI Firewall: Leave Enabled.
- ALG: Leave all Enabled.
- Go to Security > Advanced Security:
- DoS Protection: Disabled is the default state.
- If you need it Enabled, then set the following:
- Enable ICMP-FLOOD Attack Filtering: Unchecked.
- ICMP-FLOOD Packets Threshold (5 ~ 3600): 50 Packets/s.
- Enable UDP-Flood Filtering: Unchecked.
- UDP-FLOOD Packets Threshold (5 ~ 3600): 500 Packets/s.
- Enable TCP-SYN-FLOOD Attack Filtering: Unchecked.
- TCP-SYN-FLOOD Packets Threshold (5 ~ 3600): 50 Packets/s.
- Ignore Ping Packet From WAN Port: Unchecked.
- Needed for to allow the router to respond to our Call Quality Monitoring and Troubleshooting Server.
- Forbid Ping Packet From LAN Port: Unchecked.
- Needed for troubleshooting network issues that can affect the phones.
- If you need it Enabled, then set the following:
- DoS Protection: Disabled is the default state.
- This step is needed to prevent and resolve call and fax quality issues.
- Go to DHCP > DHCP Settings:
- Take note of the Start and End IP Addresses.
- You will need list later.
- Go to Bandwidth Control > Control Settings:
- Enable Bandwidth Control: Checked.
- Line Type: Select ADSL or Other, depending on who your ISP is.
- Egress Bandwidth:
- Enter in only 80-95% of your Upload speed.
- If you do not know, estimate the Upload speed by taking the average of 3 bandwidth tests at speedtest.net.
- Or you can contact your ISP.
- Ingress Bandwidth:
- Enter in only 80-95% of your Download Speed.
- If you do not know, estimate the Download speed by taking the average of 3 bandwidth tests at speedtest.net.
- Or you can contact your ISP.
- Click Save.
- Go to Bandwidth Control > Rules List > Add New.
- Enable: Checked.
- IP Range: <Add Network Information Provided by UNIVERGE BLUE®>
- Port Range: <Add Network Information Provided by UNIVERGE BLUE®>
- Protocol: UDP.
- Egress Bandwidth (Min): Calculate (50 * each-phone) + (100 * each-fax-adapter).
- Egress Bandwidth (Max): Calculate (100 * each-phone) + (100 * each-fax-adapter).
- Ingress Bandwidth (Min): Use the same number as Egress Min.
- Ingress Bandwidth (Max): Use the same number as Egress Max.
- Click Save.
- Go to DHCP > DHCP Settings:
- This step is only needed if you have or plan to purchase Polycom phones:
- The steps below can take your phones and computers offline for 10 minutes or much longer if an unexpected problem arises.
- Make sure only do to these steps during a time when you can afford to take your network offline.
- Go to DHCP > DHCP Settings:
- Primary DNS: "8.8.8.8".
- Secondary DNS: "8.8.4.4".
- Click Save.
- Reboot all Polycom phones and any computers that cannot load webpages.
- Go to DHCP > DHCP Settings:
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