ivr

Self-hosted API-first AI call center: AI talks, code controls the call. AI agents answer every call; humans take over without dropping it. Runs on FreeSWITCH with your SIP trunk and realtime model (OpenAI, Grok, Qwen, Doubao, or any compatible gateway).

A Chinese task oriented chatbot in IVR(Interactive Voice Response) domain, implement by rasa. This is a demo with toy dataset, more data should be added for performance.

Build AI phone agents on your own computer and test every change with an AI caller. Open source, runs free with no API keys, cents per call with your own keys. Imports Dialogflow CX.

网关服务：Sip与Rtc互通，实现Web，Android，iOS，小程序，SIP座机，PSTN电话，手机互通。

AI call assistant & voice API SDK for Node.js: official Telnyx library for AI voice agents, calls, SMS and phone numbers.

PHP AGI ( Asterisk Gateway Interface ) facade, with CDR ( Call Detail Record ), Call spool and schedule auto dial, Send and Receive Fax, Channel Variables, and Caller ID management

Production-ready code examples for Telnyx AI Communications Infrastructure — Voice AI, SMS, SIP, and IoT APIs

SMS, Fax, Voice Broadcasting and auto dialer Software, A unified communications open source autodialer developed over freeswitch communication engine and ICTCore communications framework

FreeSwitch library for DotNet

Open-source AI phone API for voice agents. Give Claude, Cursor, OpenClaw, or any LLM a real phone number — outbound/inbound calls, SMS, transcripts, MCP, DTMF/IVR. FastAPI + SignalWire + Deepgram. Self-hostable alternative to Twilio, Vapi, and Retell.

An introduction to the 46elks API with code examples

Deploys a multilingual IVR contact center on Amazon Connect with one AWS CDK stack: caller identification, per-agent case isolation, returning-caller routing, supervisor case assignment and voicemail-to-case with Voicemail Express.

An automated testing framework for Interactive Voice Response (IVR) call flows

Frontend component for RapidPro and TextIt.

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.

Arke is a .NET IVR for the Asterisk ARI system build on .NET Core and AsterNET.ARI

Voicegain Enterprise Speech-to-Text Platform (API, Portal, etc.)

Voip for Micropython ESP32 with Interactive Voice Response

Module of FreePBX (IVR) :: Creates Digital Receptionist (aka Auto-Attendant, aka Interactive Voice Response) menus. These can be used to send callers to different locations (eg, Press 1 for sales) and/or allow direct-dialing of extension numbers.

Voice-Powered IVR Chatbot with Autopilot