Is the office desk phone obsolete?

It's found in every modern business, on every desk. It's powerful enough to connect even the most geographically distant workers, and yet, it strikes fear into the hearts of many millennial workers. It's the desk phone, and despite the prevalence of text messaging, collaboration apps and video conferencing, rumors of its demise have been greatly exaggerated.
"Maybe the desk phone is headed for retirement, but it's not there yet. There's still a significant portion of the workforce that prefers u