We wanted to have an eNodeB and gNodeB for our protocol test purposes: having the solution in Open Source was important to us, to have full transparency on the code, and not to be locked-in with a vendor with proprietary code. As for any industrial project, we also needed a committed partner to work with. We have now been working together for 6 months with Firecell, out of the 2 years project. I can vouch that the team is very competent in their field, reactive and transparent. All in all, a pleasure to work with.