VoipNet.Core 1.3.0

.NET 10.0

dotnet add package VoipNet.Core --version 1.3.0

NuGet\Install-Package VoipNet.Core -Version 1.3.0

This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.

<PackageReference Include="VoipNet.Core" Version="1.3.0" />

For projects that support PackageReference, copy this XML node into the project file to reference the package.

<PackageVersion Include="VoipNet.Core" Version="1.3.0" />
                    

                            Directory.Packages.props

<PackageReference Include="VoipNet.Core" />
                    

                            Project file

For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package.

paket add VoipNet.Core --version 1.3.0

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

#r "nuget: VoipNet.Core, 1.3.0"

#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.

#:package VoipNet.Core@1.3.0

#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package.

#addin nuget:?package=VoipNet.Core&version=1.3.0
                    

                            Install as a Cake Addin

#tool nuget:?package=VoipNet.Core&version=1.3.0
                    

                            Install as a Cake Tool

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Voip.NET

A Rust-powered, .NET-friendly VoIP + AI platform. SIP, RTP and SRTP from a native engine; calls, conversations and contact-centre building blocks from a modern .NET 10 API; speech and language models wired straight into the audio path.

Made by Gravicode Studios, led by Kang Fadhil. 🇮🇩 Baca dalam Bahasa Indonesia: README.id.md

Softphone sample during a call

await using var client = new VoipClient(new VoipClientOptions
{
    Domain = "pbx.example.com", Username = "1001", Password = "secret", RegisterOnStart = true,
});
await client.StartAsync();

var call = await client.CallAsync("sip:1002@pbx.example.com");
call.SendAudio(pcm16k, sampleRate: 16000);
Console.WriteLine($"{call.Codec} · MOS {call.GetStatistics().Mos:0.0}");
await call.HangupAsync();

Why Voip.NET

Native where it matters. The SIP user agent, SDP negotiation, RTP/RTCP, SRTP, the adaptive jitter buffer, codecs and ICE live in Rust. Audio crosses into .NET through zero-copy callbacks.
.NET where you work. async/await, events, IAsyncEnumerable audio streams, dependency injection, System.Diagnostics.Metrics.
AI in the call, not beside it. Speech-to-text, any IChatClient model, text-to-speech and barge-in run as one loop on the live call. Realtime speech-to-speech models are supported too.
Contact centre included. IVR flows with AI hand-off, queues with skill routing, bridged agent legs, recording, analytics and CRM tools.

Packages

Package	What it gives you
`VoipNet.Core`	`VoipClient`, `VoipCall`, conferences, DTMF, SRTP and DTLS-SRTP, TLS and WebSocket signaling, diagnostics (pcap, RTP analyser, metrics). Contains the native engine.
`VoipNet.Audio`	Microphone and speakers (OpenAL, cross-platform), WAV/MP3 call recording, resampling, voice activity detection, tones.
`VoipNet.Video`	H.264 encoding and decoding, camera and screen capture through the platform's own codec (Media Foundation on Windows), a test pattern for machines with neither, a grid/PiP compositor, and BGRA/NV12 conversion.
`VoipNet.AI`	Chat clients for OpenAI, Azure OpenAI, DeepSeek/OpenAI-compatible, Anthropic Claude and Google Gemini; speech providers; `VoiceAgent`; `RealtimeVoiceAgent`.
`VoipNet.Enterprise`	IVR builder and runner, `CallCenterService` (queues, agents, routing), `RecordingService`, `ConferenceRecorder`, CRM tool set.
`VoipNet.Cli`	`voipnet` .NET tool: SIP ping/register/call/listen/message and RTP analysis.

Features

Area	Status
SIP: REGISTER (digest auth, refresh, NAT keep-alive), INVITE/ACK/BYE/CANCEL, re-INVITE hold, REFER blind and attended (Replaces), OPTIONS, INFO, MESSAGE, NOTIFY	✅
Transports: UDP, TCP, TLS (certificate pinning), WebSocket `ws`/`wss` (RFC 7118)	✅
RTP/RTCP with adaptive jitter buffer, packet-loss concealment, symmetric RTP	✅
Codecs: Opus (48 kHz, in-band FEC), G.722, G.711 μ-law/A-law, L16 (native) · H.264 encoded and decoded through the platform codec (`VoipNet.Video`, Windows so far) · G.729, SILK, Speex, VP8, VP9 negotiated as pass-through	✅
DTMF: RFC 4733, SIP INFO, in-band generation and detection	✅
SRTP: AES-CM-128-HMAC-SHA1-80, AEAD-AES-128/256-GCM; keys via SDES or DTLS-SRTP	✅
WebRTC browsers calling SIP (SIP over WebSocket, ICE, DTLS-SRTP, data channels), verified with Edge and Firefox	✅
ICE (RFC 8445): candidate pairs, nomination, role conflicts, peer-reflexive candidates, trickle ICE, ICE restart, consent freshness · STUN, TURN	✅
Conferencing with mix-minus, speaker-focus video forwarding, simulcast both ways, screen sharing to the whole room	✅
Recording WAV/MP3, stereo or mono · video calls to MP4 or AVI · a whole conference as one composed picture	✅
LLMs: OpenAI, Azure OpenAI, DeepSeek & compatible servers, Anthropic, Gemini — streaming and tool calling	✅
STT: Deepgram and Amazon Transcribe (streaming), OpenAI, Google Cloud, ElevenLabs, ElBruno.Realtime · TTS: ElevenLabs, OpenAI, Google Cloud, Amazon Polly, ElBruno.Realtime	✅
Voice agent: barge-in, sentence streaming, call-control tools, conversation memory, hand-off · Realtime speech-to-speech agents (OpenAI, Azure OpenAI, Gemini Live)	✅
IVR builder, queues & skill routing, supervisor listen-in, recording service, metrics, CRM tools	✅
Video: H.264 encode and decode, camera and screen capture, a grid compositor, a test pattern (`VoipNet.Video`, Windows so far)	✅
Diagnostics: SIP to pcap, RTP stream analyser, `dotnet-counters` metrics	✅
Platforms: Windows x64 built and tested; Linux/macOS build from source	✅ / see building

The full list, including what is planned, lives in PLAN.md and Progress.md.

Samples

Sample	Kind	Shows
VoipNet.Softphone	Avalonia desktop	Dial pad, live call with audio traces, camera in and out, hold/mute/transfer/record, AI call summaries, built-in demo lines.
VoipNet.Gallery	Avalonia desktop	Every SDK feature as a live demo with its C#.
VoipNet.CallCenter	Blazor Server	Wallboard: queues, agents, live call quality, recordings, AI supervisor.
VoipNet.IvrStudio	Blazor Server	Design an IVR, call it from the browser, hand the caller to an AI agent.
VoipNet.WebPhone	Blazor Server	WebRTC gateway: the browser calls over SIP WebSocket and DTLS-SRTP, with video and a data channel, bridged to a SIP phone over UDP.
VoipNet.Meeting	Blazor Server	Meeting room: every browser joins one conference, audio mixed minus the listener and the speaker's camera forwarded to everyone else.
VoipNet.RealtimeAgent	Console	An AI agent that answers SIP calls (pipeline or realtime model).

WebRTC gateway: a browser call bridged to SIP

Quick start

# Requirements: .NET 10 SDK, Rust 1.80+ (only to build the engine from source)
git clone https://github.com/DotNetVibeCoderz/Vibe_Communication && cd Vibe_Communication/VoipNet
./build/build.ps1            # or ./build/build.sh on Linux/macOS
dotnet run --project samples/VoipNet.Softphone

Then read:

Credits

Voip.NET is made by Gravicode Studios, led by Kang Fadhil. Licensed under the MIT License. Sample apps use IBM Plex (SIL OFL) and Bricolage Grotesque (SIL OFL).

Product	Compatible and additional computed target framework versions.
.NET	net10.0 is compatible. net10.0-android was computed. net10.0-browser was computed. net10.0-ios was computed. net10.0-maccatalyst was computed. net10.0-macos was computed. net10.0-tvos was computed. net10.0-windows was computed.

Compatible target framework(s)

Included target framework(s) (in package)

Learn more about Target Frameworks and .NET Standard.

net10.0
- Microsoft.Extensions.DependencyInjection.Abstractions (>= 10.0.12)
- Microsoft.Extensions.Hosting.Abstractions (>= 10.0.12)
- Microsoft.Extensions.Logging.Abstractions (>= 10.0.12)
- Microsoft.Extensions.Options (>= 10.0.12)

NuGet packages (3)

Showing the top 3 NuGet packages that depend on VoipNet.Core:

Package	Downloads
VoipNet.Audio Voip.NET Audio — call recording (WAV/MP3), microphone and speaker devices (OpenAL, cross-platform), resampling, tones and voice activity detection.	324
VoipNet.AI Voip.NET AI — turn calls into conversations: streaming speech to text, large language models (OpenAI, Anthropic, Gemini, OpenAI-compatible), text to speech, barge-in and tool calling.	298
VoipNet.Enterprise Voip.NET Enterprise — IVR flows with AI, call queues and agent routing, recording, analytics and CRM tools for contact centres.	285

GitHub repositories

This package is not used by any popular GitHub repositories.

Version	Downloads	Last Updated
1.3.0	31	9/26/2026
1.2.0	118	9/17/2026
1.1.0	127	9/17/2026
1.0.0	119	9/16/2026