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Guides, comparisons and notes on telephony
How to wire up the API and MCP server, what an AI receptionist actually costs, and where volai differs from Twilio - checked against our own docs, not a hunch.
All articles
AI Receptionist
How Much Does an AI Receptionist Cost
A line-by-line breakdown of AI receptionist pricing on volai: number, minutes, agent surcharge, three volume scenarios, and what Czech competitors charge.
September 2, 2026 · 6 min read
AI Receptionist
Never Miss a Call With an AI Receptionist
Why calls get lost even with a working phone line, what the call.missed webhook tells you, and how an AI receptionist keeps every call answered.
September 2, 2026 · 6 min read
Comparison
Twilio Pricing in Czechia: 1,000 Minutes and 1,000 SMS
Twilio has no flat rate for Czech numbers - you pay per use in USD. We priced 1,000 minutes of calls and 1,000 SMS and compared it to volai's CZK rates.
September 2, 2026 · 5 min read
Comparison
Best Twilio Alternatives for Czech Businesses (2026)
volai, Plivo, Telnyx, Vonage, Sinch, SMSbrána, BulkGate and Odorik - eight phone and SMS APIs for Czech businesses, with prices where verified.
September 2, 2026 · 5 min read
SMS
Send SMS from Node.js in 10 Minutes
Send an SMS from Node.js with volai's REST API: one fetch call to POST /v1/messages, idempotency, error handling, and the exact price per segment.
September 2, 2026 · 6 min read
Calls
Make Outbound Phone Calls from an n8n Workflow
Call a customer straight from n8n: an HTTP Request node against volai's REST API, workflow data in the agent's prompt, and results delivered by webhook.
September 2, 2026 · 7 min read
Guide
Connect Your ElevenLabs Agent to a Czech Number via SIP
Step by step: connect your own ElevenLabs Conversational AI agent to a Czech volai number over SIP - inbound and outbound calls, no agent surcharge.
September 2, 2026 · 7 min read
Guide
Give Claude Code a Phone Number with MCP
Install volai into Claude Code with one command, then make your first call and send an SMS with a plain-English prompt - no code, no API docs.
September 2, 2026 · 6 min read
Glossary
What Is a SIP Trunk
A SIP trunk is a data connection that carries phone calls over the internet instead of a cable - exactly what an AI voice agent needs to answer a real phone.
September 2, 2026 · 6 min read
Glossary
What Is an MCP Server and How Does It Make Phone Calls
An MCP server lets an AI editor use an outside tool at runtime - with volai, that includes calling a real phone number. How it works, with make_call.
September 2, 2026 · 7 min read
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