Thanks for all the responses. We are looking to design a topology based this feature but it appears that external voice gateways are in order (4 PRI circuits, two in each cabinet, will be prohibitively expensive). We have existing Cisco VG200 gateways that would be perfect if they will play nice with Avaya. Anybody worked with this configuration?? I have posted this question in another thread as well. Thanks for all of your input.