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Overview

Import your existing Twilio numbers into Assistable using Elastic SIP Trunking. This connects Twilio’s VoIP system to the platform so your AI can make and receive calls.

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Step-by-Step Setup

1

Access Twilio Console

Log in to console.twilio.com and navigate to Explore Products → Super Network → Elastic SIP Trunking.
2

Create a SIP Trunk

Click Get Started → Create a SIP Trunk. Give it a name and create it.
3

Configure General Settings

  • Enable Call Recording (Record from ringing)
  • Enable Call Transfer (SIP REFER)
  • Set Caller ID for Transfer Target to caller ID as transferee
  • Click Save
4

Set Up Termination (Outbound)

Go to Termination in the left navigation. Save the Termination SIP URI — you’ll need it later.Under Authentication → IP Access Control Lists, add two entries:
  • default ACL 1: Address 0.0.0.0/1
  • default ACL 2: Address 128.0.0.0/1
5

Set Up Origination (Inbound)

Go to Origination and add this URI:
sip:ecabe71af1354f858dc49374b8293591.sip.telnyx.com
6

Add Numbers to the Trunk

Click Add a number in the top right. Buy a new number or add an existing one to this trunk.
7

Import to Assistable

In your Assistable dashboard:
  1. Go to Numbers → Import a Number
  2. Enter the number in raw format: +1XXXXXXXXXX (no spaces or special characters)
  3. Enter your Termination URI
  4. Click Import
The system saves your Termination URI for future imports.
Both the IP Access Control Lists (for outbound) and the Origination URI (for inbound) must be configured correctly, or calls will fail.