I have created movi account manually in the TMS, and it work fine with VCS - control.
However, It can't register to VCS-expressway. Is it compulsory to have a Name Authority Pointer record in DNS?
For example, we configure abc.com as SIP domain of VCS expressway,is it compulsory to resolve abc.com as public IP address of VCS expressway by DNS server?
thats mean you are not nating to the AMZ just direct to the Public IP of the VCSE
if this is the case at lease you should see registration attempts if nothing can be seen then you need to look into the firewall level
is it ASA ? try tp do packet capture and see why you arew not hitting the VCSE using SIP
as it might be firewall issue !