we need a cisco TAC engineer on this call asap, there is a live tshoot call ongoingh

HiAt a remote site currently have deployed cisco 7940, these are being replaced with 7942, however currently getting registration rejected and error on phone VPN Not connected. CUCM version 8.5Any one any ideas?  Thanks in AdvanceNic

Hi,I have ccm on dmz, ip phones on internal lan and mgcp gateway on outside interface and some ip phones across wan.Do I need Fixup protocol for ip phones to register with ccm?Do I also need FIXUP mgcp protocol for mgcp traffic?Also, how does rtp tra...