HTTP or STUN server to discover its public IP address, then sends it to any external endpoints
wishing to join the conference. The external endpoints then answer the call using the IP address
provided. Configure the XT Codec Unit for HTTP or STUN autodiscovery.
Figure 10: Using an HTTP/STUN Server for NAT and Firewall Traversal
This approach works well in simple NAT and firewall traversal deployments, typically used by home
offices and Small Medium Businesses (SMBs).
• Using a NAT/firewall traversal server supporting H.460
The endpoints in the private network communicate with the endpoints located in the public network
via an H.460 NAT/firewall traversal server, like the Scopia PathFinder (see
on page 24). Endpoints in the public network can join a conference
hosted in the private network via the traversal server if there is an open connection through the
firewall. Verify the duration of the firewall pinhole and configure that time in the XT Codec Unit.
Having a dedicated NAT/firewall traversal server like the Scopia PathFinder offers external
endpoints a static address when joining conferences hosted in your organization. You can dial
[email protected] to access from outside the firewall, or you can dial 1234 directly if
you are a H.460 client logged in to the Scopia PathFinder Server.
H.460 is an extension of the H.323 protocol used for NAT and firewall traversal, employing ITU-T
standards. The traversal server can be a Scopia PathFinder or a third-party ITU-T compliant
server.
Installation Guide for Scopia XT5000 Series Version 3.2
Planning the Topology of the Scopia XT Series Deployment | 23
