How much of Tennessee had this ROH tone? - Video Dailymotion
How much of Tennessee had this ROH tone? There were several phone companies with this switch type ATT/Philps Tel 5ESS-PBX Host. only one I know with this switch type and this ROH tone was Concord Telephone Exchange Inc. in Knoxville Tn. What kind if ROh tone is this and what is the Technical name for this ROH tone? Please let me know. Thank you.
I just love to watch trains and explore the history of Telephone Exchanges.
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