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Sip Voice Call Control

Voice interface using Telnyx Call Control API. Answer phone calls with AI, function calling, and natural conversation. Use for hands-free assistant access, phone-based reminders, or voice-controlled tools. Requires Node.js and Telnyx API key.

skill openclawclawhub Free

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Install for OpenClaw

Quick setup

Download the package from Yavira.
Extract the archive and review SKILL.md first.
Import or place the package into your OpenClaw setup.

Requirements

Target platform: OpenClaw
Install method: Manual import
Extraction: Extract archive
Prerequisites: OpenClaw
Primary doc: SKILL.md

Package facts

Download mode: Yavira redirect
Package format: ZIP package
Source platform: Tencent SkillHub
What's included: SKILL.md, package.json, setup.sh, src/dev.ts, src/tunnel.ts, test.sh

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Trust & source

Release facts

Source: Tencent SkillHub
Verification: Indexed source record
Version: 1.0.0

Provenance

Publisher: teamtelnyx
Source page: View original listing
Canonical URL: Open canonical page

Documentation

ClawHub primary doc Primary doc: SKILL.md 15 sections Open source page

SIP Voice Call Control

Voice interface for OpenClaw using Telnyx Call Control API. Call via SIP and have natural conversations with your AI assistant.

How It Works

Your Phone (SIP) → Telnyx Call Control → Webhooks → This Server → Commands back ↓ ↓ STT/TTS/Media LLM + Tool Execution This is not WebRTC — it's server-side SIP call handling. Telnyx handles all audio; we just receive webhooks and send commands.

1. Install Dependencies

cd skills/sip-voice-call-control npm install

2. Configure

cp .env.example .env Edit .env: TELNYX_API_KEY=KEY_your_api_key_here

3. Start Server

npm run start Console shows: 🎙️ Assistant Voice Server ready on port 3000 📞 Dial: sip:openclaw@yourconnection.sip.telnyx.com

Agent Setup Flow

When setting up for a user, agents should:

1. Collect Configuration

Ask for: Telnyx API Key (required) Get from: https://portal.telnyx.com/#/app/auth/v2 Needs Voice API + Inference permissions TTS Voice (optional) Telnyx.NaturalHD.astra — Female, warm and clear (default, recommended) Telnyx.NaturalHD.atlas — Male, deep and authoritative Polly.Amy-Neural — British female Polly.Brian-Neural — British male Polly.Joanna-Neural — American female Polly.Matthew-Neural — American male Azure.en-US-JennyNeural — American female Azure.en-GB-RyanNeural — British male See .env.example for full list Voice Model (optional) Qwen/Qwen3-235B-A22B — Best for function calling (default) meta-llama/Meta-Llama-3.1-8B-Instruct — Fastest meta-llama/Llama-3.3-70B-Instruct — Balanced Personalization (assistant name, user name, timezone) is pulled automatically from workspace files (IDENTITY.md, USER.md).

2. Write .env File

cat > .env << 'EOF' TELNYX_API_KEY=<user_api_key> VOICE_MODEL=Qwen/Qwen3-235B-A22B TTS_VOICE=Telnyx.NaturalHD.astra EOF

3. Start in Background (Persistent)

The server must run persistently to receive calls. Use nohup to keep it alive: cd /path/to/sip-voice-call-control nohup npm run start > sip-voice-call-control.log 2>&1 & Or from an agent: // Use nohup to keep process alive after session ends exec({ command: "cd /path/to/sip-voice-call-control && nohup npm run start > sip-voice-call-control.log 2>&1 &", background: true }) Important: Without nohup, the process will die when the parent session ends. Always use nohup or a process manager for production. To check if running: ps aux | grep "tsx.*dev" | grep -v grep To stop: pkill -f "tsx.*dev.ts" To view logs: tail -f /path/to/sip-voice-call-control/sip-voice-call-control.log

4. Extract SIP Address

Poll the process logs and give the user the SIP dial-in: 📞 Dial: sip:openclaw@<connection>.sip.telnyx.com

Environment Variables

VariableRequiredDefaultDescriptionTELNYX_API_KEYYes—Telnyx API keyVOICE_MODELNoQwen/Qwen3-235B-A22BModel for inferenceTTS_VOICENoPolly.Amy-NeuralText-to-speech voicePORTNo3000Server portENABLE_TUNNELNotrueCreate Cloudflare tunnelWORKSPACE_DIRNo~/clawdFor memory search tool

Available Tools

ToolTrigger PhrasesWhat It Doeslist_cron_jobs"what reminders", "my schedule", "cron jobs"Lists scheduled tasksadd_reminder"remind me", "set a reminder"Creates new reminderremove_cron_job"delete", "cancel" + job nameRemoves a scheduled taskget_weather"weather", "temperature", "forecast"Gets current weathersearch_memory"what have we been working on", "projects"Searches workspace files

Features

Low-latency — 500ms-1.5s response time with enable_thinking: false Barge-in — Interrupt the assistant anytime by speaking Function calling — Native tool support with Qwen Auto-setup — Cloudflare tunnel and Call Control app created automatically Personalization — Reads IDENTITY.md and USER.md for context

Troubleshooting

No response after speaking: Check Telnyx API key has Voice API + Inference permissions Verify webhook URL is reachable (tunnel must be active) Slow responses (>3s): Ensure using function-calling branch (not main) Check model availability on your Telnyx account Tool not executing: Ensure openclaw CLI is in PATH Check WORKSPACE_DIR is set correctly Port already in use: Kill existing server: pkill -f "tsx.*dev.ts" Or change PORT in .env

Resources

Telnyx Call Control: https://developers.telnyx.com/docs/voice/call-control Telnyx Inference: https://developers.telnyx.com/docs/inference See ARCHITECTURE.md for technical details

Category context

Code helpers, APIs, CLIs, browser automation, testing, and developer operations.

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Package contents

Included in package

4 Scripts1 Docs1 Config

SKILL.md Primary doc
setup.sh Scripts
src/dev.ts Scripts
src/tunnel.ts Scripts
test.sh Scripts
package.json Config