Was this the step by step tones for United Telephone Company in Chappel Hill TN

Was this the step by step tones for United telephone Company is Chappel Hill TN? They had ATT/Philps Tel 5ESS-PBX Host Switches but did they have this step by step tones? I still wanna know what kind of off hook tone that was and what the technical name for this off hook tone is. Please let me know. thank you.