Have a site with a BCM400 4.0 to be linked with a BCM200 3.7. I have 2 VOIP trunks licensed at both ends. Both ends connected to the network. Routing and gateway programming are done, but cannot call thru from either end. Calls from the BCM400 end sieze and dial as observed on Monitor. Calls from BCM200 end don't seize or dial. I would appreciate a list of things to check. Thanks.