Phone of the Day: Nortel M5209 Centrex “P” Telephone at Northwestern University

My friend who works at Northwestern University in Evanston, IL sent me this picture of a pure centrex set in her office. Northwestern is still primarily a Nortel Centrex system with 1100 series CICM phones and M5000 sets.  

The hospital, on the other hand, is Cisco and Avaya.