Telephony Python Packages

mobly

E2E test framework for tests with complex environment requirements.

five9

Interact with Five9 Cloud Call Center using Python

greenswitch

Battle proven FreeSWITCH Event Socket Protocol client implementation with Gevent

dtmf

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

pipecat-mirai

Mirai for Pipecat: Hindi, Hinglish and Gujarati text-to-speech, the Realtime API (speech to speech), and smooth phone-call audio

genesis

Implementation of FreeSWITCH Event Socket protocol with asyncio

tring

Open-source voice agent stack: one agent contract, any runtime (cascade / speech-to-speech / hybrid), local-first, cost-transparent.

hail-sdk

Give your agent a real phone number and an email inbox — in minutes, not days.

voip

Python VoIP library of the AI age

pysipio

An open-source Python library for easy VoIP call integration using SIP and SDP protocols. Simplify real-time communication and audio handling in your applications.

asterisk-ai-voice-agent

Self-hosted AI voice agent for Asterisk. Streaming STT to LLM to TTS over AudioSocket, with barge-in and tool calling.

teler

This library offers a lightweight and developer-friendly abstraction over the FreJun Teler API.

pagingserver

SIP-based Announcement / PA / Paging / Public Address Server system

sipral

Sipral (Session Initiation Protocol Rust Audio Layer): a memory-safe SIP client stack in Rust for softphones, mobile apps and voice agents. One C ABI, bindings for Swift, Kotlin, .NET, Python, Dart, Node.js and React Native. AGPL-3.0 or commercial.

sipral-opus

Sipral (Session Initiation Protocol Rust Audio Layer): a memory-safe SIP client stack in Rust for softphones, mobile apps and voice agents. One C ABI, bindings for Swift, Kotlin, .NET, Python, Dart, Node.js and React Native. AGPL-3.0 or commercial.

dograh-sdk

Open source voice AI platform. Self-hosted alternative to Vapi and Retell. On Prem, BYOK across Speech to Speech or LLM/STT/TTS, with a visual workflow builder, MCP native and telephony support.

packetexchange

Official Python library for the PacketExchange voice and SMS API

wavix-python-sdk

Official Wavix Python SDK for messaging, voice, phone numbers, SIP trunks, and more

langchain-ictfax

Open Source Fax Server Software supporting inbound and outbound faxing. ICTFAX can be used in following faxing scenarios Web to fax, Fax to Web or Online Fax Email to fax and fax to email ATA / Extensions to send and receive faxes via Fax machine using internet REST based Fax API’s to integrate with third party applications and automate business process G.711 based Fax Origination / Termination / Gateway T.38 based Fax Origination / Termination PSTN based Fax Origination / Termination / Gateway

nummeropslag-mcp

Public Partner API + MCP server for Danish phone-number lookup, caller-ID & spam signals — OpenAPI spec, MCP server & client examples (curl/Python/Node/PHP)

voicent-python

Voicent Python Library

fritzmoles-mcp

MCP server for FRITZ!Box telephony: call lists, answering machine, call barring, call forwarding (TR-064)

flashvad

FlashVAD is a small causal voice-activity detector and integration toolkit for low-latency voice calls. It emits one speech probability every 10 ms

piper-tts-server

Paced, streaming Piper TTS for real-time voice pipelines - Asterisk AudioSocket, RTP or WebSocket. Optional ElevenLabs with local fallback.