LanScape VOIP Media Proxy™ - User's Reference
LanScape VOIP Media Proxy®
Tile Page
Part Number
Software License Agreement
Getting Started
The LanScape VOIP Media Proxy®
General Description
Media Proxy Configuration
Performing Configuration
Configuration Dialogs
Basic Settings
Network Configuration
SIP Proxy Configuration
Wan IP/NAT Detection
Event Logging
Backing up and restoring configuration information
Backing up the proxy configuration
Restoring the proxy configuration
Running Multiple Instances
Running more than one proxy on the same machine
Running the proxy server as a service
Running the proxy server as a service
Deployment Scenarios
Deploying in the global IP address space
Deploying in your private IP address space
Help File Version
Help File Version

Deploying in your private IP address space

As an alternative to deploying the Centrex Proxy Server® and one or more VOIP Media Proxy Servers into the global IP address space, you can also deploy the servers within your own private IP address space and lose no functionality or connectivity capabilities whatsoever.

When you deploy the servers in your private network, you enhance the security of your Centrex Proxy Server® and VOIP Media Proxy Servers by "hiding" them behind your outermost firewall or NAT router. The main advantage is that your servers will be less visible to the internet side of the network.

However, when you deploy your VOIP domain within your private network, you must make sure that your outermost NAT router will forward all UDP SIP and RTP traffic to the appropriate destination machines within your network.

The figure below shows a typical private network deployment:

In the above figure, the Centrex Proxy Server® and the VOIP Media Proxy Servers are located inside of the private IP network. The boundary being the NAT router. The left side of the NAT router represents the private IP network and the right of the NAT router represents the global IP network. The figure above shows an internet connection using a broadband cable or DSL mode. In reality, your connection to the internet can be any technology.

Due to the hostile nature of the current IP4 network regarding peer to peer VOIP communications, media proxying is recommended for all VOIP deployments. It allows you to maintain the utmost in private network security while allowing you to overcome the myriad of issues you must face when deploying VOIP networks. By deploying one or more LanScape VOIP Media Proxies in a load sharing configuration, you do not need additional costly network elements such as session border controllers or boundary controllers. These additional devices are no longer required which will save you thousands of dollars during the deployment of your VOIP domain. LanScape Centrex Proxy Servers can automatically load share with two or more VOIP Media Proxy servers. Also, any combination of Centrex Proxy Servers and VOIP Media Proxy Servers can be configured for full media load sharing. Even if the Centrex Proxy Servers are managing different VOIP domains.