While troubleshooting classroom podium signal path issues, technicians often mention electronic devices and components by their brand name (for example Crestron, Scarlett, Behringer, Inogeni). Sometimes referred to as “phoenixes”, Phoenix terminal blocks are found at the back of the Crestron Digital Media Processing System.
Context and historical background:
https://en.wikipedia.org/wiki/Phoenix_Contact
https://www.phoenixcontact.com/assets/2018/interactive_ed/101_1118292/index.html#0