The attention paid to facility specification details in Public Switched Telecom Networks makes you aware of just how much copper wire was involved in a Central

The attention paid to facility specification details in Public Switched Telecom Networks makes you aware of just how much copper wire was involved in a Central Office and the special needs of -48V DC power plants, or 21-inch rack transmission and radio tower equipment. Just a different world to the ISO-22237 / TIA942 / BISCI / Uptime specifications used for Data Centers now.