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Answer phone calls with your agent

Your Cysora agent can answer phone calls on a number you already own. You bring the number from a VoIP provider, paste your provider credentials into Cysora, and Cysora connects the number to your agent.

About 3 minutesLast checked Oct 20, 2026Open in your dashboard

What you need

An account with Telnyx, Twilio or Plivo, and a voice phone number in that account.
Your provider credentials: an API key for Telnyx, or an Account SID and Auth Token for Twilio.

Choose your provider

Already have a number? Use the provider it is with. Starting fresh? Any of them works; pick the one you're most comfortable buying numbers from.

Telnyx: you need a Telnyx API key. Cysora creates a Cysora Voice application in your Telnyx account and assigns your number to it.
Twilio: you need your Account SID and Auth Token. Cysora sets your number's voice webhook.
Plivo: you need your Auth ID and Auth Token.

How it works

1
Open the Phone tab
In the sidebar, choose Go live (shown as Channels & install once your agent is live), then the Phone tab, and select your provider.
2
Connect
Enter your number in E.164 format, like +15551234567, and your credentials, then choose Connect. Cysora saves them encrypted and sets up call routing in your provider account.
3
Set hours and activate
Optionally add a Transfer number (E.164) for handing calls to a person, set Language, office hours and Timezone (IANA), then choose Save & activate.

The AI answers only inside your office hours. Outside them, callers hear an after-hours message and the call ends. Without a transfer number the agent is AI-only.

Check it worked

The Phone tab shows your number as connected and your agent as live.
During office hours, call the number from another phone: your agent answers.

If it doesn't work

Not sure which guide to follow.: Follow the guide for the provider your number is with. Each one lists where to find your credentials and how to fix common problems.