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● Set up · Phone numbers

Telnyx
the number callers dial.

Telnyx provides the phone number and carries the call to ElevenLabs over SIP. Answerbell never sees the audio. The steps follow ElevenLabs' own Telnyx guide.

RequiredNumber + per-minute charges

01What it costs

Billed by Telnyx, not included

Telnyx bills your account for each number (monthly) and per inbound minute: telnyx.com/pricing. Numbers in some countries (Slovakia, for example) need company documents before Telnyx activates them; start that early, it can take days.

021. A SIP connection to ElevenLabs (once)

  1. Telnyx portal: Voice → SIP Trunking → Create SIP Connection, type FQDN.
  2. Authentication & Routing → Add FQDN: sip.rtc.elevenlabs.io, port 5060, TCP.
  3. Inbound: destination number format +E.164, SIP transport TCP, region closest to your callers (Europe for SK/CZ).
  4. Save. One connection serves all your clients' numbers.

Reference: ElevenLabs — Telnyx guide.

032. A number per client

  1. Numbers → Buy numbers, pick the client's country and city.
  2. On the number: Connection → the SIP connection from step 1.

043. Connect the number to the client's agent

  1. In Answerbell open the client, press Create agent and copy the agent id it shows.
  2. In ElevenLabs: Agents → Phone numbers → Import number → From SIP trunk (SIP trunking guide). Label: the client's name; number: the Telnyx number in E.164 (+421…); inbound media encryption: Allowed; no digest authentication.
  3. Assign agent → the client's agent.
  4. Back in Answerbell put the number in the client's Phone number callers dial field for your own overview.
Client profile in Answerbell with the phone number field and the agent panel

054. Test

Call the number. You should hear the AI disclosure in full even if you speak over it, then the assistant. Ask for opening hours, a free time, book, and ask for a person (it takes a message). The booking and the message arrive by e-mail and appear in the console.

The caller's number

The assistant uses the number the caller dials from when ElevenLabs passes it on (system__caller_id). Over a SIP trunk ElevenLabs only documents that value when the call carries an X-CALLER-ID header, so on some setups it is empty. Answerbell handles that: before it books or cancels without a known number, the assistant asks the caller for one. Check on your first test call whether it asked; if it did not need to, the number came through.

06The business keeps its existing number

Most businesses forward their current number to the Telnyx number (always, or when busy / not answered) in their own phone provider's settings. That provider sets the forwarding rules and may charge for forwarded calls; ask the business to test once.