Skip to content

14-day free trial — 30 minutes included

PermanenceAI24/7 AI Phone Receptionist

Guide · Numbers and telephony

Import your Twilio or Telnyx numbers

Use your Twilio or Telnyx numbers with your agent via a SIP trunk.

AvailabilityAll plans.

Open my accountAll guides

Before you start

In your account, open "Your phone numbers", then "Integrate SIP trunk": the form shows the inbound SIP address to give your provider. Keep this screen open.

In Twilio

  1. Twilio Console: "Elastic SIP Trunking" → "Create new SIP Trunk".
  2. "Termination": enter just a name (for example yourcompany); Twilio adds .pstn.twilio.com. Note down the full address.
  3. Under "Authentication", set up access (IP address list or credentials).
  4. "Origination": add the inbound SIP address shown in your account.
  5. "Numbers": add the numbers you want to use.

In Telnyx

  1. Telnyx portal: "Voice" → "SIP Trunking" → "Create SIP Connection", type "FQDN".
  2. Add the inbound SIP address shown in your account (port 5060) and select it as the primary FQDN.
  3. Outbound authentication: "Credentials", with a username and password you note down.
  4. Assign your numbers and allow the countries you will call ("Outbound Voice Profiles" → "Allowed Destinations").

Import the number into your account

  1. "Your phone numbers" → "Integrate SIP trunk".
  2. Enter the number in international format, plus the username and password.
  3. SIP address: the Twilio address you noted (yourcompany.pstn.twilio.com), or sip.telnyx.com for Telnyx.
  4. Choose the authorisation type and the country, then save.
  5. Assign the number to your agent and test both an inbound and an outbound call.

Tip

You only create the trunk once: for each new number, add it to the trunk and then import it. Password: at least 12 characters, with upper-case and lower-case letters and numbers.

Need help? In your account, the help assistant (bubble at the bottom right) answers in your language. You can also email contact@permanenceia.com.

Related guides

Start for free