Electro-Voice EVID12.1 Release Note page 3

Brian Chelminiak, Jesse Stunes and Tim Cary
Dynacord ProAnnounce matrix management systems form the
heart of countless modern business, corporate and industrial
paging and background music systems around the world, ranging
from small restaurants to large department stores. No other matrix
system offers so much power, flexibility and value, with such a
wide range of products designed to precisely meet the demands
of so many applications. Telex Communications offers a complete
range of products for integration with ProAnnounce systems in
business environments: