[cisco-voip] Connecting to third party CUCM via ICT trunk

[Damian Turburville]

Hi,
I am looking for some advice. I have a CUCM 6.1 system at one of my sites and we 
have a third-party who is on our WAN (but controls their own LAN and servers 
etc) who also has a Call Manager (not sure what revision) and they would like to 
make calls between the two sites. I was thinking it would probably be fairly 
easy to setup an ICT trunk between the two systems but I am sure our security 
team would have some issues with that. Is there any way of making the trunk more 
secure? Locking down ports on the firewall etc, maybe some kind of VPN 
connection? Is there anyone out there that has done this that could share their 
experiences?
Many thanks,
Damian
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