Zoom ADSL X6v 5697 - Manual (Page 117)

Assigning a Half Bridge Device
When would I assign a half bridge device?
Assigning a PPP Half Bridge gives a public IP address to a
computer that you choose so you can bypass the modem’s NAT
feature and open up all ports on your computer. You may want to
do this if you are using an application that requires multiple ports
on a computer in your network. Some examples are video
conferencing applications, gaming applications, and instant
messaging.
Here is a picture of the Half Bridge Configuration page:
To configure a half bridge, set the Half Bridge status to Enable.
From the drop-down list, choose the computer that you want to
share the public IP address. This default setup for the PPP Half
Bridge works for most applications. You should not need to make
additional changes using the Advanced PPP Half Bridge.
Chapter 6: Using Router Setup 117