Was this the receiver off hook tone for Halls Telephone Exchange Inc. in Halls Crossroads TN

Was this the off hook tone for Halls Telephone Exchange Inc. in Halls Crossroads TN? Thy had ATT/Philps Tel 5ESS-PBX Host Switches. But did they have this off hook tone? I still wanna know what kind of off hook tone this was and what the technical name for this off hook tone is.