Extract phone numbers from an audio recording of the dial tones.

The most modern way to live in the 70s, 80s, and 90s, a phreaking awesome Blue Box DTMF tone generator

Generate DTMF tones to phone numbers

Project of Signals & Systems course

Package for working with DTMF - a system for signaling over the voice band of a telephony system using multi-frequency tones.

A script used for sending Quick Call II (2-Tone), DTMF, and Single Tone paging signals via a radio transmitter.

Desktop toolkit for Quansheng UV-K1, UV-K1(8) v3 Mini Kong and UV-K5 V3 radios. Channels, settings, calibration, DTMF, live LCD mirror, anti-brick DFU firmware flashing. CLI + PySide6 GUI, cross-platform. Open-source (Apache-2.0).

☎︎ A POTS FXO emulator you can build at home minus all the enterprise garbage you have to sift through from off the shelf ATAs

Dockerized Python serial modem attendant to pick up and dial a key, with support for Telegram Bot integration.

Dial a telephone number on your POTS phone

An Interactive Voice Response (IVR) system built with Asterisk for real-time balance checks, voicemail-to-email, and DTMF authentication.

Generate DTMF-marked test tapes and analyze playback to measure frequency response, drift (wow/flutter), and SNR; used for cassette deck calibration & signal chain analysis.

Long Range DTMF-controlled Camera over Ham Radio

First mini-project

A simple, easily modifiable automated weather station for use with radio transceivers.

Projetos da disciplina de camada Física da computação.

Lightweight LiveKit + SIP IVR — pre-recorded WAV prompts + DTMF routing for front-desk call transfer, with a FastAPI admin console

Midterm Performance Task in CPE416: Digital Signal Processing

Decoder for DTMF (and other MF signals) in Python

📻 Link analog ham radios over the internet — DTMF control over the Mumble VOIP protocol, in pure Python.