When two associated H323 stacks in different realms have the gatekeeper parameter defined, which one...

The Net-Net 4000 will proxy LRQ and LCF messages from one gatekeeper to the other and the TCP connection for H.225.0 will be established afterwards.

The Net-Net 4000 will respond locally to the LRQ with a LCF, and upon receiving the SETUP on the ingress leg, will open the TCP connection on the egress leg to send the SETUP.

It is not possible to have two associated H323 stacks when both have gatekeepers defined.

Registrations will be forwarded from one Gatekeeper to the other using unique RRQ messages.