DISCLAIMER: For transparency's sake (mainly because I don't want to take unfair credit for stuff): the research and testing here was done by me (as you can see on www.f4mi.com on the video where we talk about this), I did end up using local LLMs to help me with building the websites based on that research and cleaning up/helping me with docs/pushing some stuff to GitHub, as I said in the video I don't know shit and I am pretty much learning on the fly. Some of them for some reason (which I mean, isn't that mysterious if you consider how the sausage is made) think they are Claude. So if you see Claude mentions here, that's why lol

Turn a Linksys CIT200 DECT handset into a working voice terminal with Telegram, Discord, or local echo — wrapped in a faithful Skype 2.x / Windows XP Luna UI.

• Drives the CIT200 handset over USB HID (ring, caller ID, contacts, call state)
• Streams audio bidirectionally through the handset's built-in USB speaker and mic
• Pluggable voice backends: Telegram private calls, Discord voice, or local mock/echo
• XP-era Skype UI in tkinter with contacts, call history, and a settings editor
• Desktop control center with a system tray mode

• Python 3.10+
• A Linksys CIT200 handset connected via USB
• Windows (primary target; Linux may work with udev rules for HID access)

pip install -r requirements.txt
cp config.example.json config.json   # edit with your credentials
python run.py

python run.py --mode gui          # desktop control center
python run.py --mode mic_gui      # simple microphone window
python run.py --platform telegram_private  # use Telegram backend
python run.py --platform discord_          # use Discord backend

Copy config.example.json to config.json and fill in your platform credentials. The app will also offer a settings UI on first run.

For Telegram you'll need an api_id and api_hash from my.telegram.org. For Discord, a bot token with voice permissions.

See docs/ for detailed documentation on the HID protocol, platform abstraction, and architecture.

run.py                  # entry point
skypeui.py              # XP Luna theme UI (tkinter)
src/
  main.py               # orchestrator, config, call/contact logic
  cit200.py             # USB HID driver for the handset
  audio_bridge.py       # bidirectional PCM audio
  ui_bridge.py          # thread-safe tkinter marshaling
  platforms/             # voice backends (local_mock, telegram, discord)
control_center/          # desktop GUI and system tray launcher
assets/                  # XP theme icons and window controls
docs/                    # protocol docs and implementation notes

• cit200xSkype — philsmd/cit200xSkype — original CIT200 Linux/Skype project that pioneered the USB HID reverse-engineering for this handset
• XP Luna theme assets — B00merang-Project/Windows-XP (icons and window controls)
• Telethon — Telegram MTProto client for signaling, contacts, and profile lookups
• NTgCalls — Telegram private-call media engine
• Pyrogram — alternative Telegram backend
• discord.py — Discord voice integration
• hidapi — USB HID communication with the CIT200 handset
• sounddevice / PortAudio — real-time audio capture and playback
• customtkinter — modern desktop control center GUI
• pystray — system tray integration
• Pillow — image handling for UI assets

This is a hobby project. Credentials are stored as plaintext JSON in config.json and Telegram session tokens live as unencrypted files on disk. Treat config.json and *.session files like passwords. Both are gitignored.