ANSI T1.401.04:2000 pdf free.Network to Customer Installation Interfaces一 Analog Voicegrade Switched Access Lines with the Call Waiting, Distinctive Call Waiting, or Calling Identity Delivery on Call Waiting Feature. 3.1.5 Calling Identity Delivery on Call Waiting (CIDCW): A supplemental feature provided with the Calling Number Delivery (CND), Calling Name Delivery (CNAM), or both the CND and CNAM features that provides a...