Was this the off hook tone for United Telephone Company in Chappel Hill TN

Was this the off hook tone for United Telephone Company in Chappel Hill TN? They 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. Please let me know. Thank you.