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Using either the SSH or TCP driver in Extron GC Pro, is there a way to connect an IPCP Pro 550 to a Crestron NVX endpoint and tell it to set to a certain multicast stream, start video, etc?
I have been searching everywhere for commands that could facilitate this, but cannot find anything?? ?I am trying to do this without a crestron processor intermediary.
This is similar to an earlier post I made, but this is spurred on by a question from a colleague who absolutely does not want to use a crestron processor to switch one D30 between two E30's.

NVXs do have a REST API, the details of which you can get from - but I'm pretty sure GCPro alone won't cut it. You'd probably have to use global scripter.

I ended up going with an RMC3 being a middle man.
I hooked up the IPCP 550 and RMC3 via RS232 and used the universal projector rs232 bidirectional driver.
It seems that the RMC3 isn't at all picky about syntax and reads the user defined string exactly as it is written in GCP, but it seems that there is some translation issue from when sending signals from the RMC3 to the IPCP550.? Even though I specify the exact "input status" strings(I get 10 available to preset in the GCP driver) in the same format as written in the simpl program, it just gives me an "invalid command" error when tracing Extron toolbelt.? I think there are some added bits to the signals from the RMC3.? But that really isnt a big deal yet, as it is just to send feedback to the controller for button press confirmation.? Though it would be nice to use the status fb signals to feed back into the Extron processor so that I can have the buttons be disabled/hidden when the nvx endpoints are nonfunctional.
Otherwise, this has been very reliable.? I am just using serial sends to the XIO routing "video out" signal to change the subscribed stream.? I tried everything else under the sun, but this was the most reliable way.
I sent this over to my colleague. I hope he is able to use this information, worst case if he needs a spare Crestron processor I have one to send to him.

earlier this week, I was starting to prepare to just swap out the IPCP 550 with a Crestron CP3.? ?But I had some trouble with feeling comfortable controlling the XTP Crosspoint 16x16, and that space does not have the infrastructure to handle a complete swap to NVX hahaha. (I have enough gearto theoretically do a complete NVX swap from the Extron matrix switcher, but the network access to that specific room would need to be expanded.)

Any time I've had to communicate between GCP and Crestron I've found it's better to use a known GCP driver rather than the generic, as the generic doesn't allow 2 way communication. Typically I use an Extron Crosspoint driver and then set the Crestron up to receive and reply using the Extron SIS commands, as SIS commands are easy and well documented. It can take some tweaking to dial in but it might be worth a try as it's a fairly strait forward way to get feedback to the Extron.