Yep - there are VxWorks strings in the MedPro firmware...so it uses it for SOMETHING. Certainly not the main processor. That's 100% Oryx/Pecos.
Certainly not in the manner of the Meridian - my 11C and Definity have radically different boot processes...;)
Shoretel (and I think Mitel) have done VxWorks too. I need to find where the hell my Shoretel box went...might be across the bay.
I wonder if I can pester someone now to see if they got the Computer Consoles Inc IP from Nortel if they ever had it...
At least they're not Big Blue and their Guardians of the Mainframe Enforcers.
Just upload it to archive.org first and link to it.
I mean they have CompuServe's OS...;)