[smnrchrds]

Take the difficulties of IPv6 migration and remove the ticking clock of running out of IPv4 addresses. How long would the migration take? 10 years? 10000 years? I bet it would be closer to the latter than the former.

[tonyarkles]

And add in the fact that Nortel made a ton of the currently deployed phone switch gear, and they haven’t existed for almost 20 years now.

[dade_]

The businesses were purchased by Avaya (enterprise) and Genband (carrier). There are support and upgrade paths available. This fact also has nothing to do with the problem.