Using Cisco hardphone (7960) over site-2-site vpn with CCM
i currently have three locations in which operations run out of. In the newest location we have just finished deploying a cisco voip system. Call manager is located in this building. The other two locations are currently connected via a site to site vpn on the WAN side. All traffic is route accordingly between the three networks and from a data standpoint the LANs communicate perfectly. Obviously just plugging in the 7960 at one of the other two locations is not going work (I wouldn't think). Is there a way to get something like this to work? Would CCM need to be administered in a way to broadcast itself to not only the local IP range but also over the VPN connection?
Thanks, all help and comments are realy appreciated.