My department at my employer uses plain 2500 style telephone sets
> under a Centrex system. I kind of assumed they were still common
> place, but I understand now that they're kind of unusual? I heard
> caller-ID is very common on business phones, is that true?
> [public replies, please]
Every office I have ever worked in has had a PBX system using some sort of proprietary keysets.
Every office I have ever worked in since '95 has had keysets with an LCD display that (amomg other things) displays caller ID.
Centrex is a ripoff IMO. Especially for offices where most of the calling is in-house. Why pay for a line for each station when say only
20% of your calls ever go outside the building?