Western electric step x step dial tone. 101 A and 102 A tone generators.
patreon.com/user?u=65542787 Very short video of the tone supplies used in a 806 ring and tone plant. This is active as of 01-09-23 Pstn access line to hear this tone 346-377-0505. after D T dial 377-9901 to hear double ring or 377-5299 for 60 IPM busy. Please like and share.
