略語大辞典 [L] 30 TPON Telephony on Passive Optical Network 受動的光ネットワークによる電話.Telephony on Passive Optical Network; by BT(British Telecom); ref. BPON(broadband on a passive optical network); (UK); [L:Opt:C:E]. 丸善「略語大辞典」JLogosID : 11854184