Jitsi is an audio/video and chat communicator that supports protocols such as SIP, XMPP/Jabber, IRC and many other useful features.

智能电话外呼系统 呼叫中心系统 freeswitch webrtc

A PJSIP module for React Native.

The Open Source Cloud Communications Platform

Voglander 是基于 Spring Boot 3.5 + Java 17 的企业级视频监控平台，支持 GB28181、JT/T 1078、ONVIF、SIP Gateway、ZLMediaKit、IPC/NVR 接入、实时点播、录像回放、流媒体转发、NAT 穿透和国标级联。

纯协议层框架，屏蔽 SIP 协议细节。业务方实现 Listener 接口（推荐）或监听 Layer 1 协议事件 接收消息，通过 ClientCommandSender / ServerCommandSender 发送命令，不直接接触 JAIN-SIP。框架内置 GB28181-2016 + GB/T 28181-2022 协议实现，单 JVM 可同时启用平台服务端（gb28181-server）和设备客户端（gb28181-client），支持级联代理场景。

Android Mobile SDK to easily integrate communication features (WebRTC, messaging, presence, voice, video, screensharing) based on RestComm into native Mobile Applications

Simlar for android

RODA - Repository of Authentic Digital Objects

Project of Multi-protocol Test Tool opensourced by Ericsson

mjSIP - a complete Java-based SIP stack implementation

SIP module for React Native

监控设备管理平台，支持GB28181国标设备接入、支持海康、大华等品牌监控设备接入

SipApp is a simple application to demonstrate how to create voice call android application based on sip server

SIP-Client for a VoIP Door-Intercomstation

SIP servlets for Voice over IP and cloud telephony application and B2BUA / proxy SIP servers

PJSIP for Android. Library available on JCenter.

语音呼叫系统-外呼系统,2026年真正可商用CALLWG语音呼叫系统,语音呼叫系统功能:机器人话术外呼系统|呼叫中心|VIP队列|来电记忆|ASR语音识别|TTS等,语音呼叫系统网关支持中国电信/中国联通/中国移动运营商线路接入,支持SIP|Jssip|webrtc|webSocket|http等协议对接。

PJSIP PJSUA2 api library for Android

A simple sip talk demo based on pjsip!