[HECnet] Is this the most up to date version of DECnet OS numbers?

I have heard of three 'standard' (I.E., DEC supported) front ends for the 20, 1. RSX-20F for the terminals and KL management, 2. MCB for DECnet and 3. DN60 for IBM RJE workstations (which I maintained at Columbia. I do know of some hacked front ends: 1. Case Western had a second front end running terminals (that's right two front ends with DH11's).? How they got that many users signed on without the system melting into a puddle of bits is beyond me. 2. MIT Chaos on a KL uses a DN20 for the Ethernet communications (an NI not being available at the time) I never heard of COPOS/11, either but I don't get out much... Anybody else? > ------------------------------------------------------------------------ > On 11/7/21 12:06 PM, Robert Armstrong wrote: > > > And what the heck is COPOS/11?? I see that is says TOPS-20 front end, but > I thought TOPS20 used the same RSX20F as TOPS10. > > And DTF/MVS? Is that the IBM OS MVS? > > Bob >