OK. So I know this is probably something silly I'm overlooking.

I have 3 FX II sytems with IP networking. All running 17E 197.
At the HUB I have enabled DISA on an analog line.
When you dial in on the line you recieve intercom dial tone.
You can dial any extension on the HUB but can not dial an extension on either node.
The intercom dialing from a station works from any location to any location.
Does the system not see this as an intercom call?
Do i have to use DISA access codes for this?

Thanks for the ideas.