# Send Sip Voice Call Control to your agent
Hand the extracted package to your coding agent with a concrete install brief instead of figuring it out manually.
## Fast path
- Download the package from Yavira.
- Extract it into a folder your agent can access.
- Paste one of the prompts below and point your agent at the extracted folder.
## Suggested prompts
### New install

```text
I downloaded a skill package from Yavira. Read SKILL.md from the extracted folder and install it by following the included instructions. Tell me what you changed and call out any manual steps you could not complete.
```
### Upgrade existing

```text
I downloaded an updated skill package from Yavira. Read SKILL.md from the extracted folder, compare it with my current installation, and upgrade it while preserving any custom configuration unless the package docs explicitly say otherwise. Summarize what changed and any follow-up checks I should run.
```
## Machine-readable fields
```json
{
  "schemaVersion": "1.0",
  "item": {
    "slug": "telnyx-voice-sip",
    "name": "Sip Voice Call Control",
    "source": "tencent",
    "type": "skill",
    "category": "开发工具",
    "sourceUrl": "https://clawhub.ai/teamtelnyx/telnyx-voice-sip",
    "canonicalUrl": "https://clawhub.ai/teamtelnyx/telnyx-voice-sip",
    "targetPlatform": "OpenClaw"
  },
  "install": {
    "downloadUrl": "/downloads/telnyx-voice-sip",
    "sourceDownloadUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=telnyx-voice-sip",
    "sourcePlatform": "tencent",
    "targetPlatform": "OpenClaw",
    "packageFormat": "ZIP package",
    "primaryDoc": "SKILL.md",
    "includedAssets": [
      "SKILL.md",
      "package.json",
      "setup.sh",
      "src/dev.ts",
      "src/tunnel.ts",
      "test.sh"
    ],
    "downloadMode": "redirect",
    "sourceHealth": {
      "source": "tencent",
      "status": "healthy",
      "reason": "direct_download_ok",
      "recommendedAction": "download",
      "checkedAt": "2026-05-07T17:22:31.273Z",
      "expiresAt": "2026-05-14T17:22:31.273Z",
      "httpStatus": 200,
      "finalUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=afrexai-annual-report",
      "contentType": "application/zip",
      "probeMethod": "head",
      "details": {
        "probeUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=afrexai-annual-report",
        "contentDisposition": "attachment; filename=\"afrexai-annual-report-1.0.0.zip\"",
        "redirectLocation": null,
        "bodySnippet": null
      },
      "scope": "source",
      "summary": "Source download looks usable.",
      "detail": "Yavira can redirect you to the upstream package for this source.",
      "primaryActionLabel": "Download for OpenClaw",
      "primaryActionHref": "/downloads/telnyx-voice-sip"
    },
    "validation": {
      "installChecklist": [
        "Use the Yavira download entry.",
        "Review SKILL.md after the package is downloaded.",
        "Confirm the extracted package contains the expected setup assets."
      ],
      "postInstallChecks": [
        "Confirm the extracted package includes the expected docs or setup files.",
        "Validate the skill or prompts are available in your target agent workspace.",
        "Capture any manual follow-up steps the agent could not complete."
      ]
    }
  },
  "links": {
    "detailUrl": "https://openagent3.xyz/skills/telnyx-voice-sip",
    "downloadUrl": "https://openagent3.xyz/downloads/telnyx-voice-sip",
    "agentUrl": "https://openagent3.xyz/skills/telnyx-voice-sip/agent",
    "manifestUrl": "https://openagent3.xyz/skills/telnyx-voice-sip/agent.json",
    "briefUrl": "https://openagent3.xyz/skills/telnyx-voice-sip/agent.md"
  }
}
```
## Documentation

### 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
## Trust
- Source: tencent
- Verification: Indexed source record
- Publisher: teamtelnyx
- Version: 1.0.0
## Source health
- Status: healthy
- Source download looks usable.
- Yavira can redirect you to the upstream package for this source.
- Health scope: source
- Reason: direct_download_ok
- Checked at: 2026-05-07T17:22:31.273Z
- Expires at: 2026-05-14T17:22:31.273Z
- Recommended action: Download for OpenClaw
## Links
- [Detail page](https://openagent3.xyz/skills/telnyx-voice-sip)
- [Send to Agent page](https://openagent3.xyz/skills/telnyx-voice-sip/agent)
- [JSON manifest](https://openagent3.xyz/skills/telnyx-voice-sip/agent.json)
- [Markdown brief](https://openagent3.xyz/skills/telnyx-voice-sip/agent.md)
- [Download page](https://openagent3.xyz/downloads/telnyx-voice-sip)