ISDN. (Integrated Services Digital Network) service Telecommunications service to transmit and exchange codes, sounds or images in accordance with NTT's articles of agreement for ISDN service (hereinafter referred to as the “articles of agreement for ISDN service”)
Appears in 4 contracts
Sources: Articles of Agreement Concerning Interconnection, Articles of Agreement Concerning Interconnection, Articles of Agreement Concerning Interconnection to Non Designated Telecommunications Facilities