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8x8 Support

How to Configure Cisco RV180 VPN Router for 8x8 Service

Important-Icon.png The purpose of this article is to provide a sample configuration. At the time of article creation, this device was in a known working state on the firmware used. 

Keep in mind different firmware versions will interact with hosted VoIP services in different ways. While this device may be fully functional on the tested and/or current firmware version, it is possible newer revisions will cause disruptions in service or make a device fully compliant with the required settings for hosted VoIP services where it was previously not.

Cisco RV180 VPN Router


Administrative Information

  1. Make sure your router is powered on and connected to your network.
  2. In a browser on a computer on the same network as the gateway, navigate to the following IP address:
  3. Log in (default credentials shown below).
    • Username: admin
    • Password: admin

Adding/editing 8x8 subnets is recommended when available. Please click here and review the Traffic Shaping and Specific Subnet/Port Configuration section. (Login required.)

Firewall Configuration

  1. Go to Firewall > Attack Prevention. Disable Stealth Mode by ensuring that the checkbox next to Stealth Mode is uncheckedBlock UDP Flood also should be unchecked, as SIP must stay active and uses UDP.
  2. Click Save.
    Screen Shot 2016-02-10 at 1.46.01 PM-600x471.png
  3. Go to Firewall > SIP ALG. Uncheck the box next to SIP ALG.
  4. Click Save.
    Screen Shot 2016-02-10 at 1.46.38 PM-600x640.png
  5. Go to Advanced Settings > Session Settings. Set UDP Session Timeout Duration to 660.
  6. Click Save.
    Screen Shot 2016-02-10 at 1.46.51 PM-600x287.png
  7. Go to Firewall > Access Rules. Here you will be adding 8x8 subnets. Three rules must be created for each set of IP Address ranges. This allows information that must be sent to 8x8 to not be stopped by firewall.
  8. Set the Connection Type to Outbound (LAN (Local Network) > WAN (Internet).
  9. Set the Action to Always Allow.
  10. Enter the CIDR (Destination IP Address) ranges as shown in the example below. Destinations IP Address Ranges include: to, to, and to
  11. Set the Rule Status to Enabled.
  12. Click Save.
  13. Repeat Steps 7 through 12 for the remaining sets of IP Address Ranges.
    Screen Shot 2016-02-10 at 1.47.05 PM-600x411.png
  14. Go to Administration > Discovery - UPnP.
  15. Under UPnP Settings, check the box to Enable UPnP. This is a protocol that assists NAT traversal and several other functions.

Note: UPnP settings are not included in every RV series router. Your results may vary depending on hardware and firmware.

  1. Click Save.
    Screen Shot 2016-02-10 at 1.47.19 PM-600x594.png
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