Description: This MIB module provides information for tracking the progress and status of a data call from the hardware layer through the application or service layer.

A data call is a call setup via a signaling protocol (e.g., ISDN D Channel signaling) on the Public Switching Telephony Network to a Network Access Server in order to transfer data, either as a byte stream (e.g., terminal emulation) or in a packet format (e.g., PPP packets) from a data terminal (e.g., Personal Computer) to a data network (e.g., Internet).