Tech Obsessed

Technology and devices I'm obsessing over lately.

60 Line Cross Bar PBX Marker and Register

Published August 30, 2015 at 2736 × 3648 in A Trip to the Museum of Communications

Relay logic to store the dialed number and control call setup in the crossbar

Leave a Reply Cancel reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.