Deploying in the global IP address space

The easiest way to deploy the VOIP Media Proxy Server® in conjunction with the Centrex Proxy Server® is to co-locate the media proxy server on a host machine that has a global IP address. If you deploy your LanScape Centrex Proxy Server® to the global IP address space, then you must also deploy your LanScape VOIP Media Proxy Server® in the global IP address space.

When you deploy the servers in the global IP address space, you ensure that any other machine in your private or global IP network (the internet) can access your VOIP domain and that full media proxying will take place.

Deploying to the global IP address space also simplifies network administration seeing that no special firewall or router setups have to be configured. Note also that is acceptable to locate your Centrex Proxy Server® and your VOIP Media Proxy Server® in your DMZ if you have one.

The figure below shows a typical global IP address deployment:









In the above figure, the Centrex Proxy Server® and one or more VOIP Media Proxy Servers are located outside 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.

Because the Centrex Proxy Server® and the VOIP Media Proxy Servers are accessible globally, any soft phone or other VOIP device in the private network can communicate with the SIP server and have full media proxying if required. Similarly, any other VOIP domain, single soft phone or other SIP VOIP device can access the Centrex Proxy Server® thus making calling into your VOIP domain possible with full media proxying at your private network boundary if required.

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 will 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.