link | dec, dms-100, frame, lpf, stp, switches, telecom, terminals, vt520 | Fri Mar 11 18:33:45 EST 2022 link | bell_system, cosmic, frame, telecom, theory, wires | Wed Oct 27 16:02:53 EDT 2021 link | frame, paper, telecom | Thu Sep 23 01:42:30 EDT 2021 link | frame, telecom | Thu Sep 23 01:42:10 EDT 2021 link | att, bell_system, cosmic, frame, telecom, western_electric | Fri Sep 3 18:32:53 EDT 2021 link | coils, frame, telecom | Wed Aug 18 22:10:55 EDT 2021 link | frame, telecom, vertical | Tue Feb 4 18:33:13 EST 2020 link | cosmic, frame, telecom, wires | Thu Dec 20 18:26:00 EST 2018 link | frame, lpf, payphones, phones, telecom, wires | Mon Dec 10 23:54:30 EST 2018 link | cosmic, frame, payphones, phones, telecom, wires | Fri Dec 7 17:57:50 EST 2018 link | fiber, frame, lgx, telecom | Thu Aug 16 10:00:38 EDT 2018