Sounds like you are integrating into a i-VU CCN system. If you are, and you need to pull in points from the
CCN side of the "i-Vu CCN Link Router", you may need to add some custom integration programs into the i-Vu CCN Link
that will bring in the Comfort Controller (CCN) points and paint them to BACnet/IP to give you access to these points.
Whomsoever you use to create these custom i-Vu CCN integration programs will need to make sure they co-ordinate which points you only want to read, versus those points you want to write to.
There are limitations on the CCN side of which points you can write to, but a skilled i-Vu CCN integrator can create the needed programs in both the i-Vu CCN link, and using "Carrier CCN Best" to create the needed CCN table points in the CCN controllers.
The CCN buss side of the i-Vu CCN Link may have a CCN comm buss speed of 9600 baud, so do not expect the speed
of BACnet/IP reads, and writes, when you do finally get your points bindings with those points you want to write to.
Suggest you contact a experienced Carrier controls integrator that has skills in both i-Vu CCN Link custom programming, and in custom programming with Carrier "Best" and using Carrier Service Tool V to set up the CCN side of the i-Vu CCN Link.
The i-Vu CCN Link has "third party integration points limits", so you may want to review the Link IOM for what those limits are.
I like to see people make two BAS brands talk and work together, unfortunately it does take a bit more work to make it
work then Tridium, or Carrier claim.
Being a full time "system integrator", I have very little preference regarding brands of automation. I do have preferences for brands that have good product documentation and user support.
Wish you well on your project!
Drac
"We are what we repeatedly do. Excellence, then, is not an act, but a habit" Aristotle
Remember to "Pay it Forward"; help out the newer generation of techs, remember someone during our career helped us! ("Pay it Forward" was by someone smarter than me!!)