This document provides specifications for Customer Premises Equipment (CPE) devices designed to automatically detect stutter dial tone (SDT) on an analog telephone line. TIA-968-B includes regulatory requirements related to automatic stutter dialtone detection devices for connection to the network. This standard includes criteria to meet the TIA-968-B requirements and additional requirements for the performance of these devices.

This document also provides specifications for CPE regarding the interaction between Stutter Dial Tone Detection and Visual Message Waiting Indication features.