Was this the step by step tones for all the Tennessee Telephone Company Inc. offices in Tennessee

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