[asterisk-users] Asterisk Clusters

[Nitesh Divecha]

Hello All,

I need to implement a clustered PBX System where parent * is connected 
to one of the outbound carrier and other child * will register to parent 
*. Reason for this implementation is because some of the child * are 
behind NAT. Parent * is on Public IP Address and its connected to 
outbound carrier. Child * will only send out long distances calls to 
Parent * to terminate, rest are internal calls.

Now which is the best way to implement this type of scenario... DUNDi? 
or custom context?

Thanks,
Nitesh