Implementing Zones in Your Network
When deploying H.323 zones in your network, consider making each site connected
by a WAN link its own zone. One primary advantage of this design is that
each zone can be configured to use a specified amount of bandwidth for voice
and video calls.This is useful since the WAN is almost always where bandwidth
will be limited, and bandwidth limits can be set on a per-zone basis.This
approach is shown in Figure 5.3.