comms#traffic_object__trafficobject
  supertype:  comms#network_object__networkobject
  subtype:  comms#telecom_and_traffic_object__telecomandtrafficobject
     subtype:  #asynchronous_transfer_mode__ATM  a means of digital communications that is capable of very high speeds; suitable for transmission of images or voice or video as well as data; "ATM is used for both LAN and WAN"
     subtype:  comms#frame_relay
     subtype:  comms#ISDN  integrated services digital network
     subtype:  comms#subscriber_line
        subtype:  comms#ADSL  asynchronous subscriber line, assymetric digital subscriber line
        subtype:  comms#DSL  digital subscriber line, HDSL, VDSL

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