the main "effect" of a DP is that you choose the region and thus the codec.
so, by having your stuff on different device pools you set which codec will be used for communication
if you set local site to G711 and remote to G729 and you want to use a SW CFB it will fail, you would need to configure a xcoder on remote site that speaks G729 to xcode to g711.
HTH
java
if this helps, please rate
HTH
java
if this helps, please rate