Hi, I have two sites connected together over a WAN link @ 512Kbps. On both edges of the WAN I have Cisco 2821's, with Enterprise IOS. The VOIP solution is Ericsson. I have QoS working well so far, but without some form of CAC we're not home free yet. I have requested the PBX supplier to contact Ericsson but he's battling to get an answer. Is it possible to configure the routers for CAC with RSVP without completing any config on the PBX at this time? The calls between the braches are purely IP, there is a PBX on each LAN segment WRT to WAN. Sample config would assist.