Wardialing Modems Guerrilla Network Opensource Cyberspace [re: Tim May]

[grarpamp at gmail.com (grarpamp)]

https://en.wikipedia.org/wiki/PSTN_network_topology

https://en.wikipedia.org/wiki/Class-4_telephone_switch
https://en.wikipedia.org/wiki/No._4_Electronic_Switching_System
https://en.wikipedia.org/wiki/5ESS_Switching_System
https://en.wikipedia.org/wiki/Audichron
https://upload.wikimedia.org/wikipedia/commons/4/4e/4ESS_Switch_Emergency_Action_Interface_%28EAI%29_Display_Page.png

https://en.wikipedia.org/wiki/Bell_Telephone_Company
https://en.wikipedia.org/wiki/Bell_System
https://en.wikipedia.org/wiki/Western_Electric