openduplex uses speech-to-text, artificial intelligence and text-to-speech, to call businesses and make appointments for you.
listen to openduplex booking an appointment for a perm and a wash
openduplex also spawns an expressjs API and a simple web interface for booking appointments, generating call summaries, listening to the call and viewing chat transcripts
- SIP account to make VOIP calls
- OpenAI API key (for natural language)
- Deepgram API key (for streaming speech-to-text)
- optionally, a ElevenLabs API key (for realistic text-to-speech) -- otherwise, openduplex can use espeak for text-to-speech, which also decreases latency
| env var | example value | description |
|---|---|---|
SIP_ACCOUNT |
<sip:[email protected]>;auth_pass=YourPassword |
these are your SIP account details from your SIP provider |
OPENAI_API_KEY |
sk-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX |
your OpenAI API key |
OPENAI_MAX_TOKENS |
50 |
maximum number of tokens to be returned by each request to OpenAI, lower = faster response |
OPENAI_TEMPERATURE |
0 |
roughly translates to creativity |
DEEPGRAM_API_TOKEN |
505644d665e2c01ce2b2dfcd61396efa4b2d5a33 |
your Deepgram API key |
ELEVENLABS_API_KEY |
c53af3d18ca8188b9d3164e8726a911b |
your ElevenLabs API key |
ELEVENLABS_VOICE_ID |
21m00Tcm4TlvDq8ikWAM |
ElevenLabs voice id, default value is "Rachel" |
SPEECH_TTS |
elevenlabs or espeak |
which speech-to-text to use |
edit config.env.example and rename it to config.env
then run docker compose up --force-recreate
visit http://localhost:3000, make an appointment and click 'call'