Did all Tennessee Telephone Company Inc offices have this step by step tone_ - Video Dailymotion

Did all Tennessee Telephone Company Inc offices have this step by step tone_ - Video Dailymotion: Did all Tennessee Telephone Company Inc. offices have this step by step tones? They all had ATT/Philps Tel 5ESS-PBX Host Switches. But did they all have this step by step tones? Please let me know. I still wanna know what kind of off hook tone this was and what the technical name for this off hook tone is. Please let me know. I still wanna know what kind of off hook tone this was and what the technical name for this off hook tone is. Please let me know. Thank you.