IP Office Technical Tip (Region: Global)

190: Configuring a VPN Remote IP Phone with a Sonicwall Tz170 Router

27th September 2007 - Full PDF Text Version

The following document assumes that the user/installer is familiar with configuring both the IP Office and VPN devices as well as setting manually configuring IP hard phones. This document is for reference purposes only when creating the VPN tunnels and does not provide details on how to configure any other aspect of either device.

Test Systems Software Versions and Basic Phone Settings

Notes

1. The IP Phones may require a Virtual IP Address to be configured in the VPN settings. Please take care in choosing a Virtual IP Range. Consider where the phone is most likely to be used and ensure that the Virtual IP Range selected will not conflict. For instance, many VPN IP Phones may be installed at user’s homes. Typically a Home Router uses 192.168.0.x or 192.168.1.x as its internal network range therefore it is recommended that this is not used as a Virtual IP Address Range.

2. IMPORTANT: Many VPN Routers will not allow a direct media path to be established between two VPN Endpoints. It will be necessary to uncheck the Direct Media Path checkbox in the Extension Configuration in IP Office. Failure to do so will result in No Speech path when two VPN extensions try and establish a call.

3. Review the Sample 46vpnsetting.txt file for simplifying configuration settings on the IP Phones.

4. While the defaults for Encryption are set at 4500-4500 and these settings are preferred, there may be instances where (depending on what the Home router supports) the user may need to either disable this setting, or change to one of the other options.

5. If manually configuring a Virtual IP Address on the IP Hard-phone, ensure that accurate records are kept of IP Address allocations to avoid IP Address conflicts.

IP Office Configuration

Using IP Office Manager, Open the Configuration and Select IP Routes.

Add a New IP Route for the Virtual LAN Network to be used in the environment.

Modify the Extensions - VoIP Tab for those extensions that will be VPN Extensions, and uncheck the Direct Media Path Check Box.

Networking Scenario:

Sonicwall Tz170 VPN Router VPN Configuration settings

Important Note: Please note that the Sonicwall TZ170 Enhanced Mode has additional configuration options that need to be set. Please ensure that correct settings guidelines are followed.

Once logged into the Router, Select the VPN Option, then Select Settings

Select the Edit Icon to modify the VPN Policy

Select the Advanced VPN Settings Page and ensure the following options are enabled (usually enabled by default)

Sonicwall: VPN Remote Phone Settings