This document provides specifications for Customer Premises Equipment (CPE) devices designed to automatically detect stutter dial tone (SDT) on an analog telephone line. The Federal Communications Commission (FCC) has implemented a waiver process whereby such devices may be connected to the Public Switched Telephone Network (PSTN) providing they meet criteria set forth in the FCC's order. This document also provides specifications for CPE regarding the interaction between Stutter Dial Tone Detection and Visual Message Waiting Indication features.